GSFC X-673-64-1F
ENGINEERING DRAWING STANDARDS MANUAL
S AND SPA C I C UT
E
NAL O TI
N U. S. A.
INISTRA TIO
AERO N
M AD
A
August 1994
NA
X-673-64-1F Supersedes GSFC X-673-64-1E/July 1991
ENGINEERING DRAWING STANDARDS MANUAL Mechanical Engineering Branch Goddard Space Flight Center Greenbelt, Maryland
AND SPA ICS C T U
E
ON TI
INISTRA TIO
AL AERON
M AD
A
August 1994
N U. S. A.
NA
National Aeronautics and Space Administration Goddard Space Flight Center Greenbelt, Maryland 20771 1994
DESCRIPTION OF REVISION T h i s r e v i s i o n , w h i c h s u p e r s e d e s t h e G o d d ar d S p a c e F l i g h t C e n t e r ( G S F C ) S t a n d a r d X - 6 7 3 - 6 4 - 1 E , E n g in e e r in g D r a win g S ta n d a r d s M a n u a l, is in te n d e d to u p d a te a n d r e f le c t th e la te s t f o r ma ts a n d s ta n d a r d s a d o p te d b y G S F C. T h e f o llo w in g is a s u mma r y o f th e p r in c ip a l c h a n g e s a n d imp r o v e me n ts in c o r p o r a te d in this issue: a.
A d d itio n o f Co mp o s ite Ma te r ia l D r a w in g d e f in itio n .
b . C h a n g in g o f t h e s i g n a t u r e t o a p r i n t e d n a me i n T i t l e b lo c k s . c.
N e w e x a mp l e o f t h e M e t r i c D r a w i n g s f o r ma t a n d t o l e r a n c e p r e s e n t a t i o n .
d . I mp r o v e d p l a c e me n t o f v i e w s o n T y p e s o f D r a w i n g s s a mp l e s t o p r e v e n t u n n e c e s s a r y r e w o r k o f d r a w in g s a t a la te r d a te . e.
N e w E n g in e e r i n g O r d e r ( E O ) f o r ms a d d e d ; o ld E O f o r ms w i l l b e p h a s e d o u t.
f.
A d d itio n a l n o te s o n v a r io u s to p ic s a d d e d to N o te E x a mp le s s e c tio n .
g . D e le tio n o f mic r o f ilmin g r e q u ir e me n ts f o r d r a w in g f o r ma t. h . F lo w c h a r t f o r f lig h t p r o j e c ts r e d e f in e d .
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PREFACE T h e G S F C E n g in e e r in g D r a win g S ta n d a r d s M a n u a l i s t h e o f f i c i a l s o u r c e f o r t h e r e q u ir e me n ts a n d in te r p r e ta tio n s to b e u s e d in th e d e v e lo p me n t a n d p r e s e n ta tio n o f e n g in e e r in g d r a w in g s a n d r e la te d d o c u me n ta tio n f o r th e G S F C. T h e M e c h a n i c a l E n g i n e e r i n g B r a n c h , M e c h a n i c a l S y s t e ms D iv is io n , h a s b e e n d e le g a te d t h e r e s p o n s i b i l i t y f o r i n t e r p r e t a t i o n , p e r i o d ic u p d a t e s , a n d d i s t r ib u t i o n o f t h e G S F C E n g in e e r in g D r a win g S ta n d a r d s M a n u a l. A ll E n g in e e r in g D ir e c to r a te d e s ig n o r g a n iz a tio n s a n d th e ir c o n tr a c to r s s h a ll a d h e r e to th e r e q u ir e me n ts o f th is ma n u a l w h e n p r e p a r in g G S F C e n g in e e r in g d o c u me n ta tio n f o r f lig h t h a r d w a r e a n d g r o u n d s u p p o r t s ys te ms . Co mme n ts o r in q u ir ie s c o n c e r n in g th is ma n u a l s h o u ld b e d ir e c te d to th e Me c h a n ic a l E n g in e e r in g Br a n c h , Co d e 7 2 2 .
D r . A lla n S h e r ma n D ir e c to r o f E n g in e e r in g
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TABLE OF CONTENTS INTRODUCTION ....................................................................................................... 1 1. DRAWING ELEMENTS .......................................................................................... 3 1.1. Drawing Sizes ................................................................................................. 3 1.2. Multisheet Drawings ........................................................................................ 3 1.3. Zoning ............................................................................................................ 4 1 . 4 . T i t l e B l o c k an d R e v i s i o n B l o c k . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 1 . 5 . D r a w i n g F o r ma t . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 0 2. NOMENCLATURE ................................................................................................ 11 2.1. Drawing Title ................................................................................................. 11 2.2. Abbreviations ................................................................................................. 12 2.3. List of Material .............................................................................................. 14 2 . 3 . 1 . R e q u i r e me n t s o n t h e B o d y o f t h e D r a w i n g . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 4 2 . 3 . 2 . R e q u i r e me n t s i n t h e L i s t o f M a t e r i a l . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 4 2.4. Notes on Drawings .......................................................................................... 15 2 . 4 . 1 . S e c u r i t y C l a s s i f i c at i o n . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 5 2.4.2. Note Location........................................................................................ 15 2 . 4 . 3 . N u mb e r i n g o f N o t e s . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 6 2 . 4 . 4 . N o t e E x a mp l e s . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 6 2 . 4 . 4 . 1 . D i me n s i o n N o t e s . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 6 2.4.4.2. Heat Treating Notes.................................................................... 17 2 . 4 . 4 . 3 . J o i n i n g Me t h o d N o t e s ( w e l d i n g , b r a z i n g , e t c . ) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 8 2.4.4.4. Plating and Coating Notes ........................................................... 18 2.4.4.5. Surface Preparation Notes ........................................................... 19 2.4.4.6. Testing and Inspection Notes ....................................................... 20 2.4.4.7. Threaded Inserts — Cleaning and Installation Notes ....................... 20 2.4.4.8. Miscellaneous Notes ................................................................... 21 2 . 4 . 4 . 9 . I n f o r ma t i o n a l N o t e s . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 3 2.4.5. Local Character Notes ............................................................................ 23 2 . 4 . 6 . G e n e r a l D i me n s i o n a l T o l e r a n c e N o t e s . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 3 2 . 5 . S p e c i f i c a t io n C a l l o u t s . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 3 3. DRAFTING PRACTICES ....................................................................................... 25 3.1. General .......................................................................................................... 25 3.2. Lines ............................................................................................................. 25 3.2.1. Ink Lines and Plotted Lines .................................................................... 25 3.2.2. Pencil Lines .......................................................................................... 27 3.2.3. Types of Lines....................................................................................... 27 3.2.3.1. Center Lines .............................................................................. 27 3 . 2 . 3 . 2 . D i me n s i o n L i n e s . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 8 3.2.3.3. Leaders ..................................................................................... 28 3.2.3.4. Break Lines ............................................................................... 28 3.2.3.5. Phantom Lines ........................................................................... 29 3.2.3.6. Sectioning Lines ........................................................................ 29 3.2.3.7. Extension Lines ......................................................................... 30 3.2.3.8. Hidden Lines ............................................................................. 30 3.2.3.9. Stitch Lines ............................................................................... 30 3.2.3.10. Outlines or Visible Lines........................................................... 30 3.2.3.11. Datum Lines ............................................................................ 30 3 . 2 . 3 . 1 2 . C u t t i n g - P l a n e / V ie w i n g - P l a n e L i n e s . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 0 3 . 3 . L e t t e r i n g a n d N u me r a l s . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 1 3.3.1. Style .................................................................................................... 31 3.3.2. Heights ................................................................................................. 32 3.4. Scale ............................................................................................................. 32 3.5. Positioning the Part on the Drawing .................................................................. 33
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3.5.1. Picturization ......................................................................................... 33 3.5.2. Sections ................................................................................................ 34 3.5.3. Views ................................................................................................... 36 3.5.4. Details.................................................................................................. 37 3 . 5 . 5 . I d e n t i f i c a t i o n o f S e ct i o n s , V i e w s , a n d D e t a i l s . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 7 3 . 5 . 6 . L o c a t i n g S e c t i o n s, V i e w s , a n d D e t a i l s . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 8 TYPES OF DRAWINGS ......................................................................................... 39 4.1. Altered or Selected Vendor Part Drawing .......................................................... 39 4 . 2 . A s s e mb l y D r a w i n g . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 0 4.3. Detail Drawing ............................................................................................... 41 4.4. Drawing Tree ................................................................................................. 42 4 . 5 . E l e c t r i c a l / E l e c tr o n i c D r a w i n g s . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 3 4 . 5 . 1 . E l e c t r i c a l a n d E l e c t r o n i c S y mb o l s . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 3 4 . 5 . 2 . E l e c t r i c a l a n d E l e c t r o n i c D i a g r a ms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 3 4 . 6 . I n s e p a r a b l e A s s e mb l y D r a w i n g . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 4 4 . 7 . I n s t a l l a t i o n A s s e mb l y D r a w i n g . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 5 4.8. Interface Control Drawing ............................................................................... 46 4.9. Matched-Set Drawing ...................................................................................... 48 4 . 1 0 . M e c h a n i c a l S c h e ma t i c . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 9 4.11. Modification Drawing .................................................................................... 51 4.12. Outline Drawing ........................................................................................... 51 4.13. Source Control Drawing ................................................................................. 53 4 . 1 4 . S p e c i f i c a t i o n Co n t r o l D r a w i n g . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 4 4.15. Standard Part Drawing ................................................................................... 56 4.16. Tabulated Drawing ........................................................................................ 56 4.17. Tooling Drawing ........................................................................................... 57 4 . 1 8 . C o mp o s i t e M a t e r i a l D r a w i n g . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 8 NUMBERING SYSTEM FOR DRAWINGS AND SUPPORTING DOCUMENTATION . 60 5 . 1 . P a r t N u mb e r i n g . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 1 5 . 2 . F i n d o r I t e m N u mb e r i n g . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 2 5.3. Order of Precedence of Specifications and Standards .......................................... 62 5.3.1. Group I ................................................................................................. 62 5.3.2. Group II ............................................................................................... 62 5.3.3. Group III .............................................................................................. 63 5.3.4. Group IV .............................................................................................. 63 5.3.5. Group V................................................................................................ 63 ENGINEERING ORDER ........................................................................................ 64 6 . 1 . G e n e r a l R e q u i r e me n t s . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 4 6 . 2 . F o r ma t S a mp l e . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 4 DRAWING REVISIONS ......................................................................................... 68 7 . 1 . R e v i s i o n Me t h o d s . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 8 7.2. Revision Identification .................................................................................... 68 7.3. Revision of Multisheet Drawings ...................................................................... 68 7.4. Revision Recording ......................................................................................... 68 7.5. Redrawn or Replaced Drawings ........................................................................ 70 PARTS LIST AND INDEX LIST ............................................................................. 71 8.1. Definitions ..................................................................................................... 71 8 . 2 . R e q u i r e me n t s . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 1 8.2.1. List Preparation ..................................................................................... 71 8 . 2 . 2 . L i s t F o r ma t s . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 2 8.2.3. Revision Identification ........................................................................... 72 8 . 2 . 4 . D e l e t i n g I t e ms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 2 8 . 2 . 5 . A d d i n g I t e ms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 2 8.3. Cover Sheet.................................................................................................... 72 8 . 3 . 1 . F o r ma t . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 2
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8.3.2. Entries.................................................................................................. 72 8 . 4 . P a r t s L i s t Co n t i n u a t i o n S h e e t . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 5 8 . 4 . 1 . F o r ma t . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 5 8.4.2. Entries.................................................................................................. 75 8 . 5 . I n d e x L i s t Co n t i n u a t i o n S h e e t . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 7 8 . 5 . 1 . F o r ma t . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 7 8.5.2. Entries.................................................................................................. 77 8 . 6 . F i n d o r I t e m N u mb e r S ys t e m o f I d e n t i f i c a t i o n . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 9 8.6.1. Definition ............................................................................................. 79 8 . 6 . 2 . A p p l i c a t i o n a n d L i mi t a t i o n . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 9 8 . 6 . 3 . D r a w i n g R e q u i r e me n t s . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 0 8.7. List of Material .............................................................................................. 81 8 . 7 . 1 . F o r ma t . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 1 8.7.2. Entries.................................................................................................. 81 9. DOCUMENTATION MANAGEMENT ..................................................................... 82 9.1. Typical Drawing Flow for Flight Projects .......................................................... 82 9.2. Archiving....................................................................................................... 83 9 . 3 . C o mp u t e r - A i d e d D e s i g n D r a w i n g s . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 3 9 . 3 . 1 . P r e s e n t a t i o n o f C o mp u t e r - G e n e r a t e d D a t a . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 3 9 . 3 . 2 . D e v e l o p i n g a n d U s i n g C o mp u t e r - G e n e r a t e d D r a w i n g s . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 4 9.3.3. Specification Data ................................................................................. 84 1 0 . D E S I G N R E F E R E N C E S , S TA N D A R D S , A N D S P E C I F I C A T I O N S . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 5 1 0 . 1 . D i me n s i o n i n g a n d T o l e r a n c i n g . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 5 1 0 . 1 . 1 . D i me n s i o n i n g a n d T o l e r a n c i n g P r a c t i c e s . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 5 1 0 . 1 . 2 . S t a t e me n t s o n D i me n s i o n i n g . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 5 1 0 . 2 . M e t r i c D i me n s i o n i n g . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 6 1 0 . 2 . 1 . S I U n i t s a n d S y mb o l s . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 6 10.2.2. Unit Conversions ................................................................................. 89 1 0 . 2 . 2 . 1 . C o n v e r s i o n o f D i me n s i o n s . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 9 10.2.2.2. Unit Rounding.......................................................................... 89 10.3. Design References ......................................................................................... 92 10.4. Control of Surface Roughness......................................................................... 93 10.4.1. Surface Texture ................................................................................... 93 1 0 . 4 . 2 . S u r f a c e T e x t u r e S y mb o l s . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 3 10.4.3. Surface Texture Standards..................................................................... 93 10.5. Thread Specifications .................................................................................... 93 10.6. Welding—Fusion and Resistance ..................................................................... 95 10.6.1. General ............................................................................................... 95 1 0 . 6 . 2 . B a s i c W e l d S y mb o l s a n d T h e i r L o c a t i o n S i g n i f i c a n c e . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 5 10.7. Outgassing of Spacecraft Materials ................................................................. 95 10.8. Standards and Specifications Index ................................................................. 96 10.8.1. National Bureau of Standards ................................................................ 96 10.8.2. Federal ............................................................................................... 96 10.8.3. Industrial ............................................................................................ 97 10.8.4. Military .............................................................................................. 98 10.8.5. NASA ............................................................................................... 100 1 0 . 9 . S t a n d a r d s a n d S p e c i f i c at i o n s N u me r i c a l I n d e x . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 0 1 A P P E N D I X A . D E S I G N R EV I E W D O s A N D D O N ' T s . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 0 7 INDEX.................................................................................................................... 110
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ENGINEERING DRAWING STANDARDS MANUAL
G O D D AR D S P AC E F L I G H T C E N T E R , G r e e n b e l t , M a r y l a n d
ENGINEERING DRAWING STANDARDS MANUAL
1
INTRODUCTION T h is d r a w in g s ta n d a r d s ma n u a l e s ta b lis h e s th e c o n v e n tio n s to b e a d h e r e d to b y e n g in e e r in g a n d d r a f tin g p e r s o n n e l in th e p r e p a r a tio n , r e v is io n , a n d c o mp le tio n o f e n g i n e e r i n g d r a w i n g s . T h i s ma n u a l s e t s f o r t h t h e min i mu m r e q u i r e me n t s a c c e p t a b l e a t G S F C f o r th e p r e p a r a tio n o f e n g in e e r in g d r a w in g s f o r f lig h t h a r d w a r e a n d g r o u n d s u p p o r t s ys te ms . T h e r e q u ir e me n ts s p e c if ie d h e r e in a r e e s s e n tia l to th e s ta n d a r d iz a tio n o f p r a c tic e s a n d to a u n if o r m in te r p r e ta tio n o f d r a w in g s . A s ys te m, p a ylo a d , o r c o mp o n e n t a s s e mb ly s h a ll b e c o mp le te ly d e f in e d b y me a n s o f d r a w in g s , in c lu d in g lis ts , s c h e ma tic s , w ir in g d ia g r a ms , a n d s p e c if ic a tio n s , to e n s u r e th a t c o mp o n e n t s f a b r i c a t e d a r e i n a c c o r d a n c e w i t h t h e d e s i g n . T h e d o c u me n t a t i o n i n f o r ma t i o n s h a l l s e r v e a s a p e r ma n e n t r e c o r d . F l i g h t h a r d w a r e s h a l l b e f a b r i c a t e d i n a c c o r d a n c e w i t h t h e a p p r o v e d d e s i g n d o c u me n t s . T h e s e d o c u me n t s s h a l l r e f l e c t t h e c h a r a c t e r i s t i c s a n d a c c e p t a n c e c r i t e r i a f o r a l l ma t e r i a l s , c o mp o n e n t / p a r t s , s u b s y s t e ms , a n d t h e c o mp l e t e s y s t e m. T h e a c c e p t a n c e c r i t e r i a f o r p a r t s a n d ma t e r i a l s s h a l l b e s pe c i f i e d b y s t a n d a r d s p e c i f i c a t i o n s w h e n applicable. E n g in e e r in g d r a w in g s a r e d e f in e d a s th o s e d r a w in g s th a t c o mmu n ic a te th e r e q u ir e me n ts f o r th e ma n u f a c tu r e o f th e e n d - p r o d u c t ite ms , th e ir a s s e mb ly, a n d th e ir in s ta lla tio n in th e e n d p r o d u c t. T h e e n g in e e r in g d r a w in g s p r e p a r e d b y G S F C d e s ig n p e r s o n n e l o r c o n tr a c to r s o n G S F C d r a w in g f o r ma t u s in g G S F C d r a w in g n u mb e r s s h a ll b e k n o w n a s “ G o v e r n me n t D e s ig n A c tiv ity D r a w in g s . ” P a r ts ma d e to th e s e d r a w in g s typ ic a lly w o u ld b e ma n u f a c tu r e d th r o u g h th e F a b r ic a tio n E n g in e e r in g Br a n c h , E n g in e e r in g S e r v ic e s D iv is io n , G S F C. “ C o n t r a c t o r D e s i g n A c t i v i t y D ra w i n g s ” ” ” ” ( w h i c h a r e a c o mp a n y 's d r a w i n g s b e a r i n g t h e c o mp a n y n a me , a d d r e s s , f e d e r a l c o d e id e n tif ic a tio n , a n d d r a w in g n u mb e r ) s h o u ld b e u s e d w h e n t h e c o mp a n y i s d e s i g n i n g a n d d e l i v e r in g t h e f i n i s h e d p r o d u ct i n a c c o r d a n c e w i t h t h e t e r ms o f a N A S A c o n t r a c t . The Design Activity shall be defined as an activity having responsibility for the design o f a n i t e m o r s y s t e m. T h e a c t i v i t y ma y b e a g o v e r n me n t e n t i t y , a c o n t r a c t o r , a v e n d o r , o r a n o th e r o r g a n iz a tio n s u c h a s a u n iv e r s ity. A l t h o u g h g e n e r a l l y i n a c c o r d a n c e w i t h t h e D e p ar t me n t o f D e f e n s e a n d i n d u s t r y p r a c t i c e s a n d p r o c e d u r e s , th is d r a w in g s ta n d a r d s man u a l d o e s c o n ta in s p e c if ic d if f e r e n c e s a n d e x c e p t i o n s t o E n g in e e r in g D r a win g P r a c tic e s, MI L - S T D - 1 0 0 E . T h is ma n u a l, w h ile n o t in te n d e d a s a ma n u a l o f in s tr u c tio n in th e b a s ic p r in c ip le s o f d r a f tin g , d o e s s e t f o r th th e min i mu m r e q u i r e me n t s a c c e p t a b l e a t t h e G S F C. O n e o f t h o s e r e q u i r e me n t s i s t h a t p e r s o n s e n g a g e d in th e p r e p a r a tio n o f d r a w in g s s h a ll h a v e a th o r o u g h u n d e r s ta n d in g o f th e f u n d a me n ta ls o f d r a f tin g a n d g e o me tr ic a l d ime n s io n in g a n d to le r a n c in g ( in a c c o r d a n c e w i t h A N S I Y 1 4 . 5 M - 1 9 8 2 , D im e n s io n in g a n d T o le r a n c in g ) in o r d e r to p r o d u c e in te r p r e ta b le d r a w in g s .
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G O D D AR D S P AC E F L I G H T C E N T E R , G r e e n b e l t , M a r y l a n d
ENGINEERING DRAWING STANDARDS MANUAL
1.
DRAWING ELEMENTS
1.1.
Drawing Sizes
3
T h e f o llo w in g ta b le d e f in e s th e s ta n d a r d d r a w in g s iz e s , a n d th e ir le tte r d e s ig n a tio n s to b e u s e d a t G S F C: Letter Designation B C D E F J
Sheet Width (inches) 11 17 22 34 28 34
Sheet Length (inches) 17 22 34 44 40 48 to 144(a)
Margin (inches) 3/8 1/2 1/2 1/2 1/2 1/2(b)
Notes: ( a ) L e n g th s f o r “ J ” r o l l s i z e t o b e i n l l - i n c h i n c r e me n t s . ( b ) N o t in c lu s iv e o f a d d e d p r o te c tiv e ma r g in s o f a t le a s t 2 in c h e s o n b o th e n d s o f roll size drawings.
1.2.
Multisheet Drawings M u l t i s h e e t d r a w i n g s a r e p e r mi t t e d i n a l l s i z e s . a . T h e f i r s t s h e e t o f a mu l t i s h e e t d r a w i n g s h a l l a l w a y s c o n ta i n t h e c o mp l e t e T i t l e b lo c k , L is t o f Ma te r ia l, Re v is io n Blo c k , a n d g e n e r a l n o te s . b . A l l s h e e t s o f mu l t i s h e e t d r a w i n g s s h a l l b e o f t h e s a me l e t t e r s i z e . U s e o f mu l t i s h e e t d r a w i n g s s h a l l b e f o u n d t o b e a d v a n t a g e o u s f o r c e r t a i n t y p e s o f s c h e ma tic s a n d d ia g r a ms . c.
T h e s h e e ts o f “ J ” s iz e d r a w in g s ma y b e a n y o f th e a b o v e - n o te d le n g th s a n d ma y b e in te r mix e d in d if f e r e n t le n g th s .
d . S h e e t n u mb e r in g f o r a ll f ir s t s h e e ts s h a ll in c lu d e th e to ta l n u mb e r o f s h e e ts , a s “ S H E E T 1 O F 1 , ” “ S H E E T 1 O F 2 , ” e tc . N u mb e r i n g o f c o n t i n u a t i o n s h e e t s s h a l l b e l i mi t e d t o s t a t i n g t h e s p e c i f i c s h e e t n u mb e r ( e . g . , “ S H E E T 2 , ” “ S H E E T 3 ” ) w i t h o u t s p e c i f y i n g t h e t o t a l n u mb e r o f s h e e t s .
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ENGINEERING DRAWING STANDARDS MANUAL
1.3.
Zoning V e r tic a l a n d h o r iz o n ta l z o n in g ma y b e u s e d if n e c e s s a r y to p r o v id e o r ie n ta tio n to t h e f i e l d o f d r a w i n g s . Z o n in g i s ma n d a t o r y f o r mu l t i s h e e t d r a w i n g s “ D ” s i z e a n d l a r g e r a n d s i n g l e - s h e e t d r a w i n g s “ E ” s i z e an d l a r g e r . Z o n e s s h a l l b e i d e n t i f i e d b y a l p h a b e t i c a l ( u p p e r c a s e ) a n d n u me r i c a l e n t r i e s i n t h e mar g i n s p a c e s a s i n d i c a t e d in F ig u r e 1 . Z o n e s iz e s s h a ll b e 8 ½ in c h e s ( w id th ) b y 1 1 in c h e s ( le n g th ) f o r “ E ” and “J” size, 7 inches (width) by 10 inches (length) for “F” size, and 5½ inches (width) by 8½ inches (length) for “D” size. SECURITY CLASSIFICATION 5
3
4
2
1
D
C
VERTICAL ZONE IDENTIFICATION ALPHABETICALLY LETTERED FROM BOTTOM EDGE
D
ALTERNATE LOCATION OF GENERAL NOTES
C
B
B
DRAWING NUMBER ON REVERSE SIDE FOR ROLL-SIZE DRAWINGS
PREFERRED LOCATION OF GENERAL NOTES
APPROX. 2-INCH ADDITIONAL MARGIN FOR PROTECTION OF ROLL-SIZE DRAWINGS
HORIZONTAL ZONE IDENTIFICATION NUMBERED FROM RIGHT-HAND EDGE
APPROX. 2-INCH ADDITIONAL MARGIN FOR PROTECTION OF ROLL-SIZE DRAWINGS
DRAWING NUMBER ON REVERSE SIDE FOR ROLL-SIZE DRAWINGS
REVISION NOTES
SECURITY NOTATION (IF REQUIRED) A
TITLE BLOCK 5
4
3
2
A
1
SECURITY CLASSIFICATION
Figure 1: Format for B, C, D, E, F, and J Size Drawings
1.4.
Title Block and Revision Block T i t l e b lo c k s a n d r e v is i o n b lo c k s s h a l l b e p r e p a r e d a n d c o mp l e t e d a s f o l l o w s : T h e T i t l e b lo c k o f s i n g le - s h e e t d r a w i n g s , f i r s t s h e e t s o f mu l t i s h e e t d r a w i n g s , a n d r e v is io n b lo c k s s h a ll a p p e a r a s s h o w n in e ith e r F ig u r e 2 a o n p a g e 5 ( d ime n s io n a l s y s t e m/ i n c h e s ) o r F i g u r e 2 b o n p a g e 6 ( d i me n s i o n a l s y s t e m/ mi l l i me t e r s ) . T h e i n f o r ma t i o n r e q u ir e d i n t h e T i t l e b lo c k s h a l l b e a s s p e c i f i e d o r r e f e r e n c e d b y i t e ms 1 t h r o u g h 2 8 , b e l o w . T h e T i t l e b lo c k o f c o n t i n u a t i o n s h e e t s f o r mu l t i s h e e t d r a w in g s s h a ll c o n ta in in f o r ma tio n lis te d in ite ms 1 , 2 , a n d 4 th r o u g h 1 1 .
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REVISION ZONE
25
DATE
26
APPROVAL
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28
FOLD
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DESCRIPTION
LINE
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REV
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19
18
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9
8
20
7
6
21
5
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REQD
ITEM
REQD
PART NO.
MATERIAL
DESCRIPTION
NO
MATERIAL SPEC & NO.
LIST OF MATERIAL
UNLESS OTHERWISE SPECIFIED - DIMENSIONS ARE IN INCHES
NATIONAL AERONAUTICS AND
TOLERANCES: .XX ±.02
±.005
Goddard Space Flight Center
SPACE ADMINISTRATION
.XXX
FRACTIONS ±1°
125
NAME
±1/16
INIT
GREENBELT, MARYLAND
DATE DRAWING INTERPRETED PER GSFC-X673-64-1
DESIGNER REMOVE ALL BURRS AND SHARP EDGES R .010 OR CHAMFER MAX.
FLIGHT HARDWARE/POST FAB HARDNESS TEST REQ'D HARDNESS TEST NOT REQUIRED
16
DRAWN
TITLE
NON FLIGHT
TEST HARDNESS PER ASTM E-18, LOCATION OPTIONAL
CHECKED
TEST HARDNESS PER ASTM E-18 WHERE INDICATED APPROVED
ON FIELD OF DRAWING THUS NO NON-DESTRUCTIVE EXAMINATION (NDE) REQ'D
APPROVED
NDE REQUIRED PER S-313-009 CODE APPROVED-STRESS
THIS DRAWING WAS PRODUCED USING SOFTWARE:
VERSION:
REV
GD
APPROVED-ENGINEER NEXT ASSY
FILE NAME:
USED ON
CODE
SCALE
WT.
SH
FOLD LINE
Figure 2a: Sample “Title and Revision Block” (Enlarged View) for Dimensional System/Inches
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ENGINEERING DRAWING STANDARDS MANUAL
REVISION DESCRIPTION
ZONE
25
26
APPROVAL
27
28
FOLD
24
DATE
LINE
SYM
REV
24
1
13
15
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18
16
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9
20
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7
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17 ITEM
REQD
REQD
PART NO
DESCRIPTION
NO
MATERIAL
MATERIAL SPEC & NO
LIST OF MATERIAL FLIGHT HARDWARE/POST FAB HARDNESS TEST REQ'D
METRIC
NATIONAL AERONAUTICS AND SPACE ADMINISTRATION
NAME
TEST HARDNESS PER ASTM E-18, LOCATION OPTIONAL
HYBRID
Goddard Space Flight Center INIT
DATE DRAWING INTERPRETED PER GSFC-X673-64-1
TEST HARDNESS PER ASTM E-18 WHERE INDICATED
METRIC/INCH
GREENBELT, MARYLAND
NON FLIGHT
HARDNESS TEST NOT REQUIRED
DESIGNER
ON FIELD OF DRAWING THUS THIRD ANGLE PROJECTION
NON-DESTRUCTIVE EXAMINATION (NDE) NOT REQD
DRAWN
TITLE
NDE REQUIRED PER S-313-009 CODE CHECKED
UNLESS OTHERWISE SPECIFIED DIMENSION ARE IN MM
THIS DRAWING WAS PRODUCED USING SOFTWARE:
DIMENSION TOLERANCES
3.2
2 DECIMAL
±0.25
1 DECIMAL
MECHANICAL ENGINEER
VERSION:
FILE NAME: SYSTEMS ENGINEER
±0.5
FINISH
DECIMAL
±1
IN
ANGLE
±1°
MICRO-
RAD/CHAM
±0.5
METERS
REV
ELECTRICAL ENGINEER
GD STRESS ENGINEER
REMOVE ALL BURRS AND SHARP
NEXT ASSY
USED ON
CODE
SCALE
WT
SH
LINE
FOLD
EDGES R 0.25 OR CHAMFER MAX
Figure 2b: Sample “Title and Revision Block” (Enlarged View) for Dimensional System/Millimeters
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ENGINEERING DRAWING STANDARDS MANUAL
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DRAWING NO.: See page 60.
2
“SH OF on sheet 1.
3
W T : E n te r u n it w e ig h t c a lc u la te d a t time o f d e s ig n if r e q u ir e d .
4
T I T L E : S e e p a r a g r a p h 2 . 1 o n p a g e 1 1 f o r s e le c tio n a n d a r r a n g e me n t o f drawing title. See paragraph 3.3.2 on page 32 for drawing title size.
5
S C A L E : E n te r s c a le . S e e p a r a g r a p h 3 . 4 o n p a g e 3 2 f o r s e le c tio n o f s c a le .
6
CODE: For drawings prepared by the Goddard Space Flight Center (GSFC) w ith a n o f f ic ia l G S F C d r a w in g n u mb e r , e n te r th e th r e e - d ig it G S F C c o d e id e n tif yin g th e g r o u p r e s p o n s ib le f o r th e d r a w in g .
7
” : E n t e r s h e e t n u mb e r a s a p p l ic a b l e . I n d i c a t e t o t a l s h e e t s o n l y
F o r d r a w in g s p r e p a r e d b y a c o n tr a c to r w ith a c o n tr a c to r d r a w in g n u mb e r a n d f o r ma t, th e c o n tr a c to r 's c o d e n u mb e r f r o m th e Co mme r c ia l a n d G o v e r n me n t E n t i t y ( C A G E ) P u b l i c a t i o n H 4 / H 8 ( f o r me r l y F e d e r a l S u p p ly Co d e fo r M a n u fa c tu r e r s ( F S C M ) H 4 a n d F e d e r a l S u p p ly Co d e s fo r No n - M a n u fa c tu r e r s ( F S C N M) H 8 ) s h a l l a p p e a r . 7
DATE: Enter date of initials.
8
D E S I G N E R : E n t e r d e s i g n e r ' s p r i n t e d n a me a n d i n i t i a l s .
9
D R A W N : E n te r d r a f ts ma n 's p r in te d n a me o r if d r a w n b y th e d e s ig n e r , th e d e s ig n e r ’ s p r in te d n a me ma y b e r e p e a te d .
1 0 C H E C K E D : E n t e r d e s i g n a n a l y s t ' s p r i n t e d n a me . T h i s n a me s h a l l b e a n in d e p e n d e n t n a me f r o m a ll o th e r n a me s o n th e d r a w in g . I t r e p r e s e n ts th a t th e d r a w in g h a s b e e n c h e c k e d a g a in s t th e p a r a me te r s o f th is d r a w in g ma n u a l a n d , w h e r e p o s s i b le , t o f o r m, f i t , f u n c t i o n , a n d f e a s i b i l i t y . T h e c h e c k e r mu s t h a v e a th o r o u g h u n d e r s ta n d in g o f th e me th o d s a n d p r a c tic e s o f g e o me tr ic tolerancing and be able to specify such practices in accordance with ANSI S ta n d a r d Y 1 4 . 5 M- 1 9 8 2 , D im e n s io n in g a n d T o le r a n c in g . 1 1 A P P R O V E D : E n te r th e p r in te d n a me s o f G S F C p e r s o n n e l a s s ig n e d to a p p r o v e th e d r a w in g . P r o j e c t r e q u ir e me n ts f o r d r a w in g n a me s s h a ll v a r y f r o m p r o g r a m t o p r o g r a m, b u t e a c h n a me s h a l l b e i d e n t i f i e d . F o r e x a mp l e , a f t e r e a c h a p p r o v a l n a me , n o te th e f o llo w in g : “ E N G ” f o r e n g in e e r , “ S T RE S S ” f o r s tr e s s e n g in e e r , “ Q A ” f o r q u a l i t y a s s u r a n c e e n g in e e r , “ M A T L ” f o r ma t e r i a l s e n g i n e e r , “ E L E C ” f o r e l e c t r ic a l e n g i n e e r , e t c . A l l n a me s i n l i n e i t e ms 8 t h r o u g h 1 1 mu s t b e l e g i b l e . T h e h a n d -w r i t t e n i n i t i a l s o n t h e p a p e r o r i g i n a l a r e t h e o f f i c i a l a p p r o v a l o f t h a t d o c u me n t . 1 2 U S E D O N : E n te r a c r o n ym n a me o f p r o g r a m a n d a c r o n ym n a me o f s u b s ys te m o r e x p e r ime n t w h e r e a p p lic a b le .
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1 3 N E X T A S S Y : E n t e r d r a w i n g n u mb e r o n w h i c h t h e p a r t i s n e x t u t i l i z e d , mo d if ie d , o r a s s e mb le d . I n th e c a s e o f to o lin g d r a w in g s , in th e N e x t A s s e mb ly b lo c k r e f e r to a g e n e r a l n o te th a t s ta te s “ T h is d r a w in g is u s e d to f a b r ic a te ( d r a w in g n u mb e r ) . ” I n s ta lla tio n d r a w in g s s h o u ld r e f le c t a to p c o n f ig u r a tio n d r a w in g n u mb e r a s th e n e x t a s s e mb ly. W h e n a c o n f ig u r a tio n d r a w in g is n o t b e in g p r o d u c e d , th e in s ta lla tio n d r a w in g s h a ll in d ic a te b y n o te “ T h e in s ta lla tio n f o r ms a p a r t o f th e c o n f ig u r a tio n f o r p r o g r a m ( p r o j e c t n a me ) . ” 1 4 E X A MI N A T I O N : T h e a p p r o p r i a t e “ N o n - D e s t r u c t i v e E x a mi n a t i o n ( N D E ) Re q u ir e d ” b lo c k s h a ll b e c h e c k e d o f f , an d th e a d d itio n o f th e a p p lic a b le c o d e o r “ s e e n o te X X ” s h a ll b e a d d e d w h e r e r e q u ir e d . Re f e r to T e s tin g a n d I n s p e c tio n N o te s o f th e g e n e r a l n o te s s e c tio n p a r a g r a p h 2 . 4 . 4 . 6 o n p a g e 2 0 . 1 5 F L I G H T H A R D W A R E a n d H A R D N E S S T E S T I N G : T h e F lig h t H a r d w a r e b lo c k mu s t b e c h e c k e d o f f w h e n th e p a r t is u s e d in a c tu a l f lig h t c o n f ig u r a tio n s . T h e a p p r o p r ia te H a r d n e s s T e s tin g b lo c k s h a ll b e c h e c k e d o f f r e g a r d l e s s o f w h e t h e r th e p a r t is f lig h t h a r d w a r e o r n o t. 1 6 O n CA D - p r o d u c e d d r a w in g s , a d d a 3 . 5 - in c h - lo n g b y 0 . 8 8 - in c h - h ig h b lo c k a s follows:
THIS DRAWING WAS PRODUCED USING: SO F T W A R E: (a)
VER SIO N : (b)
F IL EN A M E: (c) Notes: ( a ) S o f t w a r e u s e d ( e x a mp l e : “ A U T O C A D ” ) ( b ) V e r s i o n o f s o f t w ar e ( e x a mp le : “ 1 0 c 7 ” ) ( c ) F ile n a me ( e x a mp le : “ G S F C1 2 3 4 ” ) 1 7 ME T R I C / H Y B R I D ME T R I C - I N C H : A d d “ X ” t o t yp e o f d r a w i n g b l o c k . A A A A 1 8 I T E M N O . : E n te r ite m n u mb e r s w h e n mo r e th a n o n e typ e o f ma te r ia l o r p a r t is r e q u ir e d , a n d c o o r d in a te d r a w in g c a llo u ts o n th e d r a w in g f ie ld . P a r ts ma d e o f th e s a me ma te r ia l, c o n d itio n , a n d s p e c if ic a tio n s h a ll b e a s s ig n e d o n ly o n e ite m n u mb e r , e v e n th o u g h th e p a r t ma y b e r e q u ir e d in v a r io u s s iz e s a n d t h i c k n e s s e s . T h e q u a n t i t y f o r s u c h i t e ms i n t h e L i s t o f M a t e r i a l ( L / M ) s h a l l b e s t a t e d a s “ A / R ” w i t h t h e s p e c i f i c s i z e s s pe lle d o u t in th e f ie ld o f th e d r a w in g . Re f e r to F ig u r e 3 o n p a g e 1 0 , F ig u r e 3 4 o n p a g e 8 0 , a n d S e c tio n 8 . 6 , F in d o r I te m N u mb e r S ys te m o f I d e n tif ic a tio n , o n p a g e 7 9 . D o n o t s k ip ite m n u mb e r s o n n e w d r a w in g s . 1 9 R E Q D : E n t e r q u a n t i t y o f p a r t s r e q u ir e d o n ly f o r t h e p a r t s o f a n i n s e p a r a b le a s s e mb ly o r a s s e mb ly d r a w in g . 20
P A R T N O . : E n te r id e n tif yin g p a r t n u mb e r s w h e n r e q u ir e d ( G o v e r n me n t, c o n tr a c to r , v e n d o r , o r o th e r ) . O n n e w d r a w in g s , g r o u p lik e ite ms to g e th e r .
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21
D E S C R I P T I O N : E n t e r ma t e r i a l d e s c r i p t i o n ( p l a t e , e t c . ) o r a p a r t n a me t i t l e i f it is a n o th e r d r a w in g . E n c lo s e r e f e r e n c e i n f o r ma t i o n s u c h a s f a s t e n e r s i z e s i n brackets.
22
M A T E R I A L : E n t e r t h e ma t e r i a l f r o m w h i c h t h e p a r t i s f a b r i c a t e d . E x a mp le s : “AL ALY”; “CRES”; “BE CU.”
2 3 M A T E R I A L S P E C . : E n t e r t h e a p p l i c a b l e ma t e r i a l s p e c i f i c a t i o n s , n u mb e r , a n d f in a l c o n d itio n . E x a mp le s : “ Q Q - A - 2 5 0 /1 1 6 0 6 1 - T 6 ” f o r A L A L Y p la te ; “ASTM A582 303 COND A” for CRES bar. T h e in f o r ma tio n r e q u ir e d in th e r e v is io n b lo c k s h a ll b e a s s p e c if ie d o r r e f e r e n c e d b y i t e ms 2 4 t h r o u g h 2 8 , b el o w , a n d i n a c c o r d a n c e w i t h “ D r a w i n g Re v is io n s , ” p a r a g r a p h 7 , p a g e 6 8 . 2 4 R E V I S I O N S - S Y M: E n te r r e v is io n s ymb o l. 25 REVISIONS - ZONE: Enter zone (where used). 2 6 R E V I S I O N S - D E S C R I P T I O N : E n te r d e s c r ip tio n o f th e r e v is io n ( r e f e r to S e c tio n 7 , “ D r a w in g Re v is io n s ” ) . 2 7 R E V I S I O N S - D A T E : E n te r d a te a p p r o v e d b y a u th o r iz e d s ig n e r ( s ) in b lo c k . 2 8 R E V I S I O N S - A P P R O V A L : E n te r s ig n a tu r e o f G S F C p e r s o n a s s ig n e d to a p p r o v e . I f c h a n g e w a s b y a p p r o v e d E O , d r a w in g o n ly n e e d s a p p r o v a l o f th e d r a f ts ma n o r p e r s o n in c o r p o r a tin g th e c h a n g e , a n d th e c h e c k e r . I f c h a n g e s ma d e a r e n o t c o v e r e d b y a n E O , th e n a p p r o v a l mu s t in c lu d e th e e n g in e e r .
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DETAIL DRAWING WIRE ITEM NO.
REQD
BE CU DESCRIPTION
PART NO.
MATERIAL
QQ-C-530, COND 1/2 HT MATERIAL SPEC & NO.
DETAIL SHOWN & OPPOSITE DRAWING
ITEM NO.
REQD
-2
BAR OPPOSITE
AL ALY
QQ-A-225/8 6061-T6
-1
BAR SHOWN
AL ALY
QQ-A-225/8 6061-T6
PART NO.
DESCRIPTION
MATERIAL
MATERIAL SPEC & NO.
INSEPARABLE ASSEMBLY DRAWING 2
2
1
1
ITEM NO.
MS21209C0415
INSERT (4-40 UNC x .168 LG) PLATE
REQD
PART NO.
SEE NOTE 1 AL ALY
DESCRIPTION
MATERIAL
QQ-A-250/11 6061-T6 MATERIAL SPEC & NO.
INSEPARABLE ASSEMBLY DRAWING 2
3
1
A/R
MS21209C0415
PLATE GD1000001
ITEM NO.
REQD
INSERT (4-40 UNC x .168 LG)
SEE NOTE 1 AL ALY
QQ-A-250/11 6061-T6
PLATE ASSY
PART NO.
DESCRIPTION
MATERIAL
MATERIAL SPEC & NO.
ASSEMBLY DRAWING 4
3
3
MS51957-12
SCREW (4-40 UNC 2A x .187 LENGTH)
3
2
2
GD1003451
BLOCK
2
1
GC1003467-2
PLATE
GC1003467-1
PLATE
1
1
ITEM NO.
REQD REQD
GE1002500-2
PADDLE ASSEMBLY OPPOSITE
GE1002500-1
PADDLE ASSEMBLY SHOWN DESCRIPTION
PART NO.
CRES
MATERIAL
MATERIAL SPEC & NO.
Notes: (a) Paint, adhesives, and protective coatings shall appear in note form. (b) Hardware shall appear in List of Material with required quantity. (c) “A/R” shall be used in REQD column when same material (same material specification and condition) appears more than once in different sizes in the field of the drawing. (d) “A/R” may be used to indicate large quantities of rivets. (e) A material specification shall only appear once in the List of Material unless material conditions vary or a Shown and Opposite part is required. Sheet and plate shall not be listed as separate items. Figure 3: Examples of “List of Material”
1.5.
Drawing Format T h e d r a w in g f o r ma t f o r th e d r a w in g s iz e s lis te d o n p a g e 3 , in c lu d in g z o n in g , d r a w in g n u mb e r s , s e c u r ity c la s s if ic a tio n , e tc . , is s h o w n in F ig u r e 1 , p a g e 4 .
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2.
NOMENCLATURE
2.1.
Drawing Title
11
G e n e r a l i n f o r ma t i o n f o r t h e s e l e c t i o n o r d e v e l o p me n t o f a d r a w i n g t i t l e i s a s follows: a.
The title should be as brief as possible but should contain sufficient in f o r ma tio n to c a te g o r iz e th e p a r t p r o p e r ly a n d to d is tin g u is h it f r o m o th e r s i mi l a r p a r t s .
b. The drawing title shall consist of the following: 1 . I d e n tif yin g n o u n o r n o u n p h r a s e . 2 . T h e mo s t s ig n if ic a n t mo d if ie r o r mo d if yin g p h r a s e . 3 . T h e n e x t mo s t s ig n if ic a n t mo d if ie r o r mo d if yin g p h r a s e . T h e n o u n o r n o u n p h r a s e e s ta b lis h e s a b a s ic c o n c e p t o f a n ite m. T h e mo d i f i e r s s e r v e t o n a r r o w t h e a r e a o f c o n c e p t e s ta b lis h e d b y th e b a s ic n a me . A mo d if ie r is s e p a r a te d f r o m th e n o u n o r n o u n p h r a s e b y a c o mma a n d f r o m a n y p r e c e d i n g mo d i f i e r b y a c o mma . T h e t y p e d e s i g n a t o r a n d / o r a n y a d d itio n a l mo d if ie r s r e q u ir e d to f u r th e r id e n tif y a n ite m a r e s e p a r a te d f r o m the first part of the title by a dash. Where applicable, the word “ASSEMBLY” s h a ll b e u s e d a s th e la s t w o r d o f th e n o u n p h r a s e . EXAMPLES: “ B e a m, H o i s t i n g , G u i d e d M i s s i l e ” “ C o v e r , P r o t e c t i v e , R o c k e t M o t o r—Fo r w a r d S e c t i o n ” “ Ca b in e t, E le c tr ic a l E q u ip me n t—CY - 1 4 7 ” “ T r a n s p o r t a t i o n—Do l l y A s s e mb l y , E a r t h S a t e l l i t e ” c.
T h e n o u n , o r n o u n p h r a s e , is n e v e r a b b r e v ia te d . A b b r e v ia tio n s a r e u s e d in th e mo d i f i e r s o n l y w h e n s p a c e i s l i mi t e d . W h e n u s e d , a b b r e v i a t i o n s s h a l l c o n f o r m to A b b r e v ia tio n s , p a r a g r a p h 2 . 2 o n p a g e 1 2 .
d . W h e n o n e d r a w in g s u p e r s e d e s a n o th e r , th e n e w d r a w in g , w h e n p r a c tic a l, h a s t h e s a me t i t l e . e . P a r e n th e s e s a r e n o t u s e d t o e n c l o s e a n y p o r t i o n o f t h e d r a w i n g t i t l e . f.
P r o g r a m n a me s ( o r a b b r e v ia tio n s ) s h o u ld b e a d d e d to th e “ U s e d O n ” b lo c k a n d n o t t h e T i t l e b lo c k ; e x c e p t i o n s a r e o n t h e f i n a l o r t o p a s s e mb l y d r a w i n g .
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2.2.
ENGINEERING DRAWING STANDARDS MANUAL
Abbreviations T h e p u r p o s e o f th is s e c tio n is to p r o v id e a lis t o f a u th o r iz e d a b b r e v ia tio n s f o r u s e o n d r a w in g s a n d a s s o c ia te d d o c u me n ts . W h e n u s e d , a b b r e v ia tio n s a n d a c r o n yms shall be in accordance with GSFC STD-256-WE-1 and MIL-STD-12 (in that order of precedence). a. Uppercase Gothic letters shall be used. b . A b b r e v ia tio n s f o r w o r d c o mb in a tio n s ( e . g . , MMC—Ma x imu m Ma te r ia l Co n d itio n ) s h a ll b e u s e d a s s u c h a n d s h a ll n o t b e s e p a r a te d f o r u s e s in g ly. S i n g l e a b b r e v i a t i o n s ma y b e c o mb i n e d w h e n n e c e s s a r y . c.
T h e s a me a b b r e v ia tio n s h a ll b e u s e d f o r a l l t e n s e s , t h e p o s s e s s i v e c a s e a n d t h e s in g u la r a n d p lu r a l f o r ms o f a g iv e n w o r d .
d . A b b r e v i a t i o n s s h o u l d b e u s e d o n l y t o s a v e s p a c e o r t i me , b u t n e v e r a t t h e e x p e n s e o f c la r ity. e . P e r i o d s s h a l l b e u s e d w i t h a b b r e v i a t i o n s t h a t s p e l l e n t i r e w o r d s t o p r o v id e c la r ity a n d to a v o id mis in te r p r e ta tio n . T h e f o l l o w i n g a b b r e v i a t i o n s a r e a c c e p t a b le t o u s e a n d a r e “ i n d u s t r y - r e l a t e d ” a s s o c ia tio n s n o t f o u n d in G S F C S T D - 2 5 6 - W E - 1 o r MI L - S T D - 1 2 .
A F BMA
A n ti- F r ic tio n Be a r in g Ma n u f a c tu r e r s A s s o c ia tio n , I n c . 1 1 0 1 Co n n e c tic u t A v e n u e , N W S u ite 7 0 0 W a s h in g to n , D C 2 0 0 3 6
AGMA
A me r i c a n G e a r M a n u f a c t u r e r s A s s o c i a t i o n , I n c . 1 5 0 0 K in g S tr e e t S u ite 2 0 1 A r lin g to n , V A 2 2 3 1 4
ANSI
A me r i c a n N a t i o n a l S t a n d a r d I n s t i t u t e 1 4 3 0 Br o a d w a y New York, NY 10018
ASME
A me r i c a n S o c i e t y o f M e c h a n i c a l E n g i n e e r s 3 4 5 E . 4 7 th S tr e e t New York, NY 10017
ASTM
A me r i c a n S o c i e t y f o r T e s tin g a n d Ma te r ia ls 1916 Race Street P h ila d e lp h ia , P A 1 9 1 0 3
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ENGINEERING DRAWING STANDARDS MANUAL
AWS
A me r i c a n W e l d i n g S o c i e t y , I n c . 5 5 0 N . W . L e d e u n e Ro a d P . O . Bo x 3 5 1 0 4 0 Mia mi, F L 3 3 1 3 5
IEEE
I n s t i t u t e o f E l e c t r i c a l an d E l e c t r o n i c E n g i n e e r s , I n c . 445 Hose Lane P . O . Bo x 1 3 3 1 P is c a ta w a y, N J 0 8 8 5 5 - 1 3 3 1
ISO
I n te r n a tio n a l O r g a n iz a tio n f o r S ta n d a r d iz a tio n / ( O r g a n i s a t i o n I n t e r n a t i o n a l e d e N o r ma l i s a t i o n ) 1 , r u e d e V a r e mb é 1211 Geneve 20 S w i t z e r l a n d /S u i s s e
NEMA
National Electrical Manufacturers Association 2 1 0 1 L S tr e e t, N W W a s h in g to n , D C 2 0 0 3 7
NSA
N a tio n a l S ta n d a r d s A s s o c ia tio n , I n c . 1 2 0 0 Q u in c e O r c h a r d Blv d G a ith e r s b u r g , MD 2 0 8 7 8
NAS
A e r o s p a c e I n d u s t r i e s A s s o c i a t i o n o f A me r i c a , I n c . 1 2 5 0 I S tr e e t, N W W a s h in g to n , D C 2 0 0 0 5
SAE
S o c i e t y o f A u t o mo t i v e E n g i n e e r s , I n c . 4 0 0 Co mmo n w e a lth D r iv e W a r r e n d a le , P A 1 5 0 9 6
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2.3.
ENGINEERING DRAWING STANDARDS MANUAL
List of Material 2.3.1.
Requirements on the Body of the Drawing E a c h p a r t l i s t e d i n t h e L i s t o f M a t e r i a l ( P a r t s L i s t ) mu s t b e id e n tif ie d a t le a s t o n c e b y a n I te m ( F in d ) N u mb e r o n th e b o d y o f th e d r a w in g ( e x c e p t s in g le ite m d r a w in g s a n d s h o w n a n d o p p o s ite ite m d r a w in g s ) . Note: P a r t s s h a l l b e b r a c k e t e d , i n d i c at i n g r e f e r e n c e , w h e n t h e y a r e id e n tif ie d b y n u mb e r a n d a r e n o t n o te d in th e L is t o f Ma te r ia l. S u c h p a r ts a r e s h o w n in p h a n to m. Re p e a te d ite m n u mb e r s s h a ll b e indicated as reference either within brackets or by the word “REF.”
2.3.2.
Requirements in the List of Material a . T h e L i s t o f M a t e r i a l i s a l i s t o f a l l p a r t s a n d ma t e r i a l s c a l l e d o u t o n th e d r a w in g . S e e F ig u r e 3 o n p a g e 1 0 . b . T h e q u a n t i t y o f p a r t s n o te d i n t h e L i s t o f M a t e r i a l i s t h e n u mb e r r e q u ir e d t o c o mp l e t e t h e n o te d a s s e mb l y . c.
W h e n a n e w d r a w in g is ma d e , a ll p a r ts in th e L is t o f Ma te r ia l s h o u ld b e g r o u p e d a s to typ e , s u c h a s d a s h n u mb e r ( f o r s h o w n a n d o p p o s ite a s s e mb lie s ) , G S F C d r a w in g s ( f o r d e ta ile d p a r ts ) , MS p a r ts , N A S p a r ts , e tc . , a n d lis te d in th is s e q u e n c e .
d . Q u a n t i t i e s o f B u l k I t e ms a n d p l a c e me n t : r e f e r t o n o t e s ( a ) th r o u g h ( e ) o n F ig u r e 3 o n p a g e 1 0 . e.
P r e f e r r e d p a r ts lis ts f o r p a r ts , ma te r ia ls , a n d p r o c e s s e s c a n b e f o u n d in a n u n o f f ic ia l p u b lic a tio n a v a ila b le f o r v ie w in g in th e Mechanical Engineering Branch. The “Design Selection Guide” c o n ta in s a w id e r a n g e o f h a r d w a r e , ma te r ia ls , d e s ig n s ta n d a r d s , a n d p r o c e s s e s . I t s h a l l b e n o te d t h a t n o t a l l o f t h e i t e ms i n t h i s reference guide are rated for space flight use. Note: A ll f a s te n e r s u s e d in f lig h t h a r d w a r e a n d c r itic a l n u ts a n d b o lts u s e d o n g r o u n d s u p p o r t e q u ip me n t, in c lu d in g a ll f lig h t/G S E i n t e r f a c e s , mu s t me e t t h e s p e c i f i c a t i o n G S F C F a s t e n e r I n t e g r i t y R e q u ir e m e n ts, G S F C S - 3 1 3 - 1 0 0 , Ma te r ia ls Br a n c h , O f f ic e o f F lig h t A s s u r a n c e .
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2.4.
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Notes on Drawings I n f o r ma tio n o th e r th a n p ic to r ia l v ie w s a n d d ime n s io n s n e c e s s a r y f o r c o mp le tin g a d r a w i n g i s c l a s s i f i e d a s “ n o t e s . ” T h e tw o typ e s o f n o te f o r ms a r e G e n e r a l N o te s a n d L o c a l C h a r a c t e r N o t e s . N o t es o n a d r a w i n g t a k e p r e c e d e n c e o v e r s p e c if ic a tio n r e q u ir e me n ts ; h e n c e , n o te s c o n f lic tin g w ith r e f e r e n c e d specifications shall not be placed on a drawing unless they are necessary for d e v ia tio n s f r o m c e r ta in p r o v is io n s o f th e s p e c if ic a tio n .
2.4.1.
Security Classification The security classification “Top Secret,” “Secret,” or “ Co n f id e n tia l” s h a ll b e lo c a te d o n th e d r a w in g a s n o te d in F ig u r e 1 on page 4. E a c h s h e e t o f a mu l t i s h e e t d r a w i n g s h a l l b e i n d iv id u a l l y c l a s s i f i e d a s t o i t s c o n t e n t s . T h e s e c u r i t y s t a mp o n e a c h s h e e t s h a l l b e t h a t o f th e h ig h e s t c la s s if ic a tio n f o r a n y ite m s h o w n o n th a t in d iv id u a l s h e e t, n o t th e g e n e r a l o v e r a ll c la s s if ic a tio n o f th e e n tir e s e t o f d r a w in g s o r th e e n d ite m. O n r o ll- s iz e d r a w in g s , th e s e c u r ity c la s s if ic a tio n s h a ll b e s h o w n o n th e r e v e r s e s id e a t b o th e n d s o f th e d r a w in g s n e x t to th e d r a w in g n u mb e r to e n a b le th e c la s s if ic a tio n to be seen without unrolling the drawing. A w a r n i n g n o t e s h a l l b e i n c l u d ed a d j a c e n t t o t h e s e c u r i t y classification located above the Title block and shall read as follows: THIS MATERIAL CONTAINS INFORMATION AFFECTING THE NATIONAL DEFENSE OF THE UNITED STATES WITHIN THE MEANING OF THE ESPIONAGE LAWS, TITLE 18 U.S.C., SECTIONS 793 AND 794. THE TRANSMISSION OR REVELATION OF WHICH IN ANY MANNER TO AN UNAUTHORIZED PERSON IS PROHIBITED BY LAW.
2.4.2.
Note Location N o t e s o f g e n e r a l c h a r a c t e r t h a t d o n o t r e q u ir e le a d e r s to in d ic a te w h e r e th e y a p p ly, a n d f o r w h ic h p r o v is io n h a s n o t b e e n ma d e in th e s u p p le me n ta r y b lo c k s o f th e d r a w in g f o r ma t, s h a ll b e lo c a te d in th e f o llo w in g o r d e r o f p r e f e r e n c e : a.
Adjacent to the upper left border and to the left of all views.
b . I mme d ia te ly to th e le f t o f th e r e v is io n b lo c k . c.
A d j a c e n t t o t h e l o w e r l e f t b o rd e r o r b e l o w t h e r e v i s i o n b l o c k , space being left for extending the revision block downward. This location should be avoided whenever practical because the space required for revisions cannot be anticipated.
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2.4.3.
Numbering of Notes G e n e r a l n o te s a r e n u mb e r e d c o n s e c u tiv e ly d o w n w a r d . N o te n u mb e r s ma y b e id e n tif ie d o n th e f ie ld o f th e d r a w in g b y p la c in g th e n o te n u mb e r in a p e n n a n t- s h a p e d f la g a t th e g e n e r a l n o te lo c a tio n a n d in th e f ie ld o f th e d r a w in g , o r in th e L is t o f Ma te r ia l ( M a t e r i a l S p e c i f i c a t i o n c o l u mn ) , w h i c h e v e r l o c a t i o n i s mo r e a p p r o p r ia te .
2.4.4.
Note Examples T h e f o l l o w i n g n o t e s a r e l i s t e d a s r e p r e s e n t a t i v e e x a mp l e s a n d s h o u ld b e u s e d o n E n g in e e r in g D r a w in g s w h e n a p p lic a b le . S i g n if i c a n t i n f o r ma t i o n i s t o b e i n s e r t e d w h e r e b l a n k ( s ) a r e in d ic a te d a n d , f o r mo s t c a s e s , th e n o ta tio n s in p a r e n th e s e s a r e f o r in f o r ma tio n o n ly. ( W h e n n o t a p p lic a b le , d o n o t u s e in n o te ) . B e f o r e u s i n g t h e r e f e r e n c e d s p e c i f ic a t i o n s , c h e c k t h e D e p a r t me n t o f Defense Index of Specifications and Standards Publications to ensure that the specification has not been cancelled or superseded. U s e e i t h e r o f t h e f o l l o w i n g s t a t e me n t s a s ma i n h e a d i n g f o r n o t e s : “Except as noted” or “Unless otherwise specified.”
2.4.4.1.
Dimension Notes ALL DIMENSIONS APPLY AFTER SURFACE TREATMENT. DIMENSIONAL LIMITS AND SURFACE ROUGHNESS DESIGNATIONS APPLY (state “BEFORE” or “AFTER”) PLATING. (For other coatings, substitute the appropriate expression for “plating.”) DIMENSIONS TO APPLY AFTER STRESS RELIEF. DIMENSIONING AND TOLERANCING TO BE INTERPRETED IN ACCORDANCE WITH ANSI Y14.5M-1982. (Note need be added only when drawings are not in compliance with GSFC X-673-64-1F.) GEAR TOLERANCES TO BE IN ACCORDANCE WITH AGMA STANDARD QUALITY (insert number). DIMENSIONS ARE IN MILLIMETERS.
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TOOLING-CONTROLLED DIMENSION PER TEMPLATE (or “TOOL”) NUMBER GX XXXXXXX. THE ACTUAL TOLERANCES ON THE FEATURE'S LOCATIONS ARE CONTROLLED BY THE TEMPLATE. (Note to be flagged to toolingaffected dimensions and tolerances, which are then enclosed in parentheses to indicate a reference; template drawings shall carry a note stating the drawing number of the part they are used to fabricate.) TORQUE LIMITS FOR THREADED FASTENERS SHALL BE IN ACCORDANCE WITH PROJECT APPROVED SPECIFICATION NUMBER (OR ENGINEERING ANALYSIS).
2.4.4.2.
Heat Treating Notes Note for beryllium copper: HEAT TREAT IN ACCORDANCE WITH MIL-H-7199 TO ( Br i n e l l ) . Note for steel: HEAT TREAT IN ACCORDANCE WITH MIL-H-6875 TO XXX. (XXX = “Rockwell,” “Brinell,” or Vickers”).
N o te s f o r a lu min u m: HEAT TREAT IN ACCORDANCE WITH MIL-H-6088 TO ( Br i n e l l ) . CONDITION AFTER H EAT T R EAT T O (insert “BRAZING” or “WELDING”) IN ACCORDANCE WITH MIL-H-6088. AFTER WELDING, SOLUTION HEAT TREAT AND ARTIFICIALLY AGE TO T-6 CONDITION PER MIL-H-6088.
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2.4.4.3.
Joining Method Notes (welding, brazing, etc.) T h e f o llo w in g s p e c if ic a tio n s u p e r s e d e s MI L - W - 8 6 0 4 f o r A lu m. ; MI L - W - 8 6 1 1 A f o r S te e l, CRE S , a n d H T RE S A L Y ; a n d MI L - W - 1 8 3 2 6 f o r Ma g n e s iu m: FUSION WELD IN ACCORDANCE WITH CLASS MIL-STD-2219, PROCESS U SIN G F IL L ER M ET AL AND APPROPRIATE FLUX. (Joint dimension and design should be specified on the drawing.) ELECTRON BEAM WELDING IN ACCORDANCE WITH MIL-W-46132. SOLDER IN ACCORDANCE WITH NHB 5300.4(3A–1), USING SOLDER MATERIAL, QQ-S-571, TYPE . SOLDER IN ACCORDANCE WITH DOD-STD-1866 (GENERAL SOLDERING PROCESS FOR ALL TYPES AND MATERIALS FOR NONELECTRICAL APPLICATIONS). N o te f o r a lu min u m: DIP BRAZE IN ACCORDANCE WITH MIL-STD-645; CONDITION PER H EAT T R EAT T O MIL-H-6088. SILVER SOLDER IN ACCORDANCE WITH MIL-B-7883, TYPE G R AD E USING SOLDER MATERIAL QQ-B-654, CLASS . RIVET IN ACCORDANCE WITH MIL-STD-403.
2.4.4.4.
Plating and Coating Notes P l a t i n g n o t e s a r e g e n er a l l y n o t f o r s p a c e f l i g h t h a r d w a r e u s e i n r e s t r i c t e d a r e a s s u c h a s o p t i c s , e l e c t r o n i c s , e t c . , d u e to f la k in g . CADMIUM PLATE IN ACCORDANCE WITH QQ-P-416, CLASS . TYPE H A R D C H R O M E P L A T E ( s i z e ) —( s i z e ) T H I C K P E R , CLASS ; DIMENSIONS QQ-C-320, TYPE SHOWN APPLY AFTER PLATING. NICKEL PLATE IN ACCORDANCE WITH MIL-STD-171, . F I N I S H ( p a r a . n u m b e r ) , TYPE
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SILVER PLATE IN ACCORDANCE WITH QQ-S-365, , G R AD E . TYPE PAINT IN ACCORDANCE WITH MIL-STD-171, TABLE ; F IN ISH N O . COLOR IN ACCORDANCE WITH FED-STD-595 (color number). N o te s f o r a lu min u m: ANODIZE IN ACCORDANCE WITH MIL-A-8625, TYPE , CLASS COLOR (name of color only). IRIDITE IN ACCORDANCE WITH MIL-C-5541, . CLASS Note for CRES: PASSIVATE PER QQ-P-35, TYPE
.
OF MIL-STD-171. F IN ISH Use paragraph that applies to material being used. Note for iron and steel: APPLY PROTECTIVE PHOSPHATE COATING IN ACCORDANCE WITH MIL-C-12968, TYPE . ”if applicable.) (Add “CLASS
N o t e f o r t i t a n iu m: SURFACE FINISH TO BE IN ACCORDANCE WITH AMS 2488, TYPE .
2.4.4.5.
Surface Preparation Notes SURFACE TO BE CLEANED AND POLISHED FOR VACUUM USE. DO NOT USE ROUGE COMPOUNDS OR CHEMICALS DURING BUFFING OR POLISHING ON ITEMS REQUIRING TANK-TYPE LEAK TESTS. EXTERNAL SURFACE TO BE BUFFED TO . BEFORE ELECTROPOLISHING, MASK ALL SURFACES MARKED .
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VAPOR DEGREASING PER ASTM D4126, GENERAL SOLVENT GRADE 1,1,1 TRICHLOROETHANE.
2.4.4.6.
Testing and Inspection Notes THIS PART SHALL HAVE A LEAK RATE OF NOT MORE THAN (1 x 10-7 CC/SEC OF HELIUM) WHEN MEASURED BY A CALIBRATED MASS SPECTROMETER HAVING A SENSITIVITY OF (1 x 10-9 CC/SEC WITH GREATER THAN 90% HELIUM) AT A DIFFERENTIAL OF (ONE) ATMOSPHERE OR EQUIVALENT TEST. RADIOGRAPHIC INSPECTION OF ALL WELDS IN ACCORDANCE WITH MIL-STD-00453. ULTRASONIC INSPECTION PER MIL-STD-2154, TYPE (Insert “I” or “II”), CLASS . (I = Immersion Method, II = Contact Method.)
F o r G e n e r a l F r a c tu r e Co n tr o l P la n fo r P a y lo a d s U s in g th e S p a c e T r a n s p o r ta tio n S y s te m ( S T S ) , r e f e r to G S F C 7 3 1 - 0 0 0 5 - 8 3 . O n e o f th e f o llo w in g n o te s s h o u ld b e u s e d f o r p a r ts r e q u ir in g e tc h in g a n d /o r liq u id p e n e tr a n t in s p e c tio n : FRACTURE CRITICAL PART - ETCH AND PENETRANT INSPECT PER GSFC S-313-009, CODE XXXXX. (Usually used for machined parts.) FRACTURE CRITICAL PART - DO NOT ETCH PART. PENETRANT INSPECT PER GSFC S-313-009, CODE XXXXX. (Usually used for rolled parts.) I f a r e a s o f a p a r t a r e t o b e e t c he d a n d i n s p e c t e d p r i o r t o f i n i s h ma c h in in g , a s e p a r a te d r a w in g n o te s h o u ld c a ll o u t th is r e q u ir e me n t t o a v o i d c o s t l y mis t a k e s .
2.4.4.7.
Threaded Inserts — Cleaning and Installation Notes N o t e f o r a l u mi n u m a n d ma g n e t i c s u r f a c e s : CLEAN THREADED INSERTS WITH TRICHLOROETHANE AND BAKE OUT AT 100 DEGREES CELSIUS FOR 3 TO 4 HOURS PRIOR TO INSTALLATION. APPLY DRY FILM LUBRICANT GOVT. DESIGNATION M-6003, TYPE (insert “I” or “II”) PER MIL-L-46010 QPL (LIST). (Type I cure temp. = 150 degrees C.) (Type II cure temp. = 240 degrees C.)
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INSTALL THREADED INSERTS PER XXX. (XXX = “MS33537” for coil type, “MS51835” for Keen type, or “ M I L -I -4 5 9 3 2 / 1 ” f o r t h i n w a l l t y p e . ) INSTALL CLINCH NUTS PER MIL-N-45938/1. AFTER THE BONDING EPOXY IS CURED PER NOTE , AL L IT EM (insert number) THREADED INSERTS SHALL BE CAPABLE OF WITHSTANDING A CORRESPONDING TORQUE LOAD, AS LISTED IN TORQUE TABLE, WITHOUT BECOMING LOOSE. ALL THREADS ON THREADED FASTENERS SHALL BE FREE OF ADHESIVE AND FOREIGN MATERIAL. TORQUE TABLE THREAD SIZE TORQUE, IN-LBS 6-32 UNC x.x ... ... ... ...
TAP ALL HOLES PRIOR TO COATING; INSTALL THREADED INSERT AFTER COATING.
2.4.4.8.
Miscellaneous Notes PLACE IN BAG AFTER FINAL ELECTROPOLISHING. BAG SHALL CONFORM TO MIL-P-116, METHOD (see spec.). ALTERED PART SOURCE INFORMATION: PAR T N O .: VEN D O R : ADDRESS: MAINTAIN AS MATCHED SET AFTER MACHINING. Note for NON-flight parts ONLY: STEEL STAMP, ETCH, OR ENGRAVE (size) HIGH +.005 CHARACTER AS SHOWN, X .010 -.000 DEEP. THIS DRAWING TO BE INTERPRETED IN ACCORDANCE WITH GSFC X-673-64-1F. RUBBER STAMP (size) HIGH CHARACTER AS (insert “INK” or “PAINT”) IN SH O W N , U SIN G ACCORDANCE WITH (specification *). (* Include manufacturer's part number and address.)
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BAG PART PER MIL-P-116, METHOD TAG WITH PART NUMBER.”
, AND
ALTERED SURFACES TO HAVE . (Refer to paragraph 10.4.1, page 93, for symbol notation.) FINISH ALL OVER. (Refer to paragraph 10.4.1, page 93, for symbol notation.)
SURFACE ROUGHNESS AS XXX: MACHINED SURFACES . (where XXX is “ROLLED,” “EXTRUDED,” or “DRAWN”). (Refer to paragraph 10.4.1, page 93, for symbol notation.) IN SID E C O R N ER S R
MAXIMUM.
UNIT TO BE STRAIGHTENED AND STRESSRELIEVED AFTER WELDING. WELDED OR BRAZED FILLETS TO BE CONFINED TO INSIDE SURFACE. TWINE SHALL CONFORM TO THE REQUIREMENTS , CLASS . OF MIL-T-713, TYPE A MANUFACTURER'S CERTIFICATION OF MATERIAL SPECIFICATION COMPLIANCE MUST BE SUPPLIED W IT H PAR T (insert number). MAGNETIC SPECIFICATION--PERMEABILITY OF (specify units) . LESS THAN COMPONENTS MUST BE PACKAGED AND MARKED IN ACCORDANCE WITH APPLICABLE INTERSTATE COMMERCE COMMISSION (ICC) REGULATION 49-CFR71-78; SHIPMENT SHALL BE MADE DIRECTLY TO THE USING AGENCY. EXPLOSIVE (or other applicable wording) COMPONENTS ARE HAZARDOUS AND MUST BE HANDLED IN ACCORDANCE WITH APPLICABLE SAFETY REGULATION 49-CFR71-78.
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2.4.4.9.
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Informational Notes I n f o r ma tio n a l n o te s , s u c h a s th e f o llo w in g g o v e r n me n t r ig h ts to ma n u f a c t u r e n o t e , s h a l l a p p e a r a d j a c e n t t o t h e r i g h t b o r d e r a n d T i t l e b lo c k o f t h e d r a w i n g : THE XXXX COMPANY, CHICAGO, IL., PART NUMBER XXXX CORRESPONDS TO THE ITEM DEPICTED ON THIS DRAWING, WHICH IS FURNISHED FOR UNRESTRICTED USE IN CONNECTION WITH ANY U.S. GOVERNMENT MANUFACTURE OR PROCUREMENT. SUCH USE IS AUTHORIZED BY THE XXX COMPANY LETTER NO. AND DATED XXX SIGNED . NO OTHER USE IS AUTHORIZED.
2.4.5.
Local Character Notes N o t e s o f l o c a l c h a r a c t e r , s u c h a s d r i l l n o te s , t h r e a d n o te s , e t c . , t h a t r e q u i r e l e a d e r s t o i n d i c a t e t h e f e a tu r e s t o w h i c h t h e y a p p ly , s h a l l b e l o c a t e d i n t h e f i e l d o f t h e d ra w i n g i n p o s i t i o n s a d j a c e n t t o s u c h f e a t u r e s . E a c h n o t e s h a l l s t a t e t h e n u mb e r o f f e a tu r e s to w h ic h it applies unless a leader is drawn to each feature.
2.4.6.
General Dimensional Tolerance Notes T h e g e n e r a l to le r a n c e s e n te r e d in th e s u p p le me n ta r y p o r tio n o f th e T i t l e b lo c k s h a l l c o n tr o l a l l d ime n s i o n s a p p l i e d t o t h e d r a w i n g , e x c e p t t h o s e s p e c i f i c a l l y l a b e l e d “ M a x , ” “ M i n , ” “ R e f , ” “ D a t u m, ” o r “ Ba s ic , ” o r d ime n s io n s h a v in g to le r a n c e s a p p lie d d ir e c tly th e r e to , o r d ime n s io n s c o n tr o lle d b y n o te s o r d o c u me n ts in v o k e d o n th e d r a w in g . G e n e r a l to le r a n c e s ma y b e c h a n g e d to th e p r e v a le n t to le r a n c e s th a t a r e r e q u ir e d b y th e d r a w in g typ e . T h is is d o n e b y s tr ik in g th r o u g h th e to le r a n c e a n d in s e r tin g th e n e w to le r a n c e b e n e a th th e o ld . I n th e c a s e w h e r e me tr ic to le r a n c in g is r e q u ir e d , s e e S e c tio n 1 0 . 2 , s u b p a r a g r a p h i, f o r g e n e r a l to le r a n c e s .
2.5.
Specification Callouts N o r ma lly, o n ly th e b a s ic d o c u me n t n u mb e r o f a s p e c if ic a tio n s h o u ld b e s h o w n o n t h e d r a w i n g , i n w h i c h c a s e , t h e l a t e s t i s s u e i n e f f e c t a t t h e t i me o f i n v i t a t i o n t o b id s h a ll b e imp o s e d in a ll p r o c u r e me n t a c tio n s . Ch a n g e s to th e s p e c if ic a tio n o c c u r r in g s u b s e q u e n t to th e time o f in v ita tio n to b id s h a ll n o t b e imp o s e d in c u r r e n t p r o c u r e me n t a c tio n s u n le s s th e d r a w in g is r e v is e d to s h o w th e n e w is s u e b y b a s ic d o c u me n t n u mb e r , r e v is io n s , a me n d me n t, a n d /o r d a te a n d c u r r e n t p r o c u r e me n t a c tio n s a me n d e d to s p e c if y th e n e w d r a w in g r e v is io n o r E n g in e e r in g Order (EO).
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I f th e b a s ic d o c u me n t n u mb e r , r e v is io n , a me n d me n t, a n d /o r d a te o f a s p e c if ic a tio n a r e s h o w n o n a d r a w in g , o n ly th a t p a r tic u la r is s u e s h a ll b e imp o s e d in a ll p r o c u r e me n t a c tio n s . Ch a n g e s to th e s p e c if ic a tio n o c c u r r in g s u b s e q u e n t to th e time o f in v ita tio n to b id s h a ll n o t b e imp o s e d in e ith e r c u r r e n t o r f u tu r e p r o c u r e me n t a c tio n s u n le s s th e d r a w in g is r e v is e d to s h o w th e n e w is s u e b y b a s ic d o c u me n t n u mb e r , r e v is io n , a me n d me n t, a n d /o r d a te a n d c u r r e n t p r o c u r e me n t a c tio n s a me n d e d to s p e c if y th e n e w d r a w in g r e v is io n o r E O . Re g a r d le s s o f w h e th e r a s p e c if ic a tio n is s h o w n o n th e d r a w in g b y b a s ic d o c u me n t n u mb e r o n ly o r b y a p a r tic u la r is s u e , s u p e r s e d in g s p e c if ic a tio n s ( n e w n u mb e r ) s h a ll n o t b e imp o s e d in e ith e r c u r r e n t o r f u tu r e p r o c u r e me n t a c tio n s u n le s s th e d r a w in g is r e v is e d to s h o w th e n e w b a s ic d o c u me n t n u mb e r a n d , if a p p lic a b le , is s u e a n d c u r r e n t p r o c u r e me n t a c tio n s a me n d e d to s p e c if y th e n e w d r a w in g r e v is io n o r E O .
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3.
DRAFTING PRACTICES
3.1.
General
25
T h e s e d r a f t i n g p r a c t i c e s a r e t o b e e mp l o ye d in th e p r e p a r a tio n o f d r a w in g s b y G S F C p e r s o n n e l t o a c h i e v e c o mmo n a l i t y t h r o u g h o u t a n d r e s u l t i n l e g i b l e r e p r o d u c tio n s a t th e le a s t c o s t f r o m o r ig in a l d r a w in g s . D r a w in g s mu s t b e c o mp le te a n d u n a mb ig u o u s in in te r p r e ta tio n . Co mp le te d r a w in g s c o n ta in o r ma k e r e f e r e n c e to a ll d a ta n e c e s s a r y f o r f a b r ic a tin g a n d in s ta llin g th e p a r t a n d , w h e n a p p lic a b le , th e n e c e s s a r y te s t r e q u ir e me n ts , p r o c u r e me n t r e q u ir e me n ts , a n d s o u r c e . T h ir d - a n g le o r th o g r a p h ic p r o j e c tio n s h a ll b e u s e d f o r me c h a n ic a l e n g in e e r in g d r a w in g s . ( Ce r ta in d ia g r a ms , s c h e ma tic s , e tc . , a r e e x c e p te d . ) A lth o u g h o th e r typ e s o f p r o j e c tio n , s u c h a s is o me tr ic , p e r s p e c tiv e , e tc . , a r e n o t p r o h ib ite d , th e ir u s e mu s t b e c o n f i n e d t o a n a u x i l i a r y v ie w o n a d r a w i n g o f a c o mp l e x p a r t w h e n such a view shall aid in visualizing the part. D r a w in g s n e e d n o t h a v e th r e e v ie w s , ( i. e . , o n e o r tw o v ie w s a r e p e r mis s ib le f o r o b j e c ts th a t c a n b e c o mp le te ly d e f in e d ) . Co mp le me n ta r y n o te s o r d ime n s io n s a r e acceptable in place of the additional views. The rule shall be that only those v ie w s s h a ll b e d r a w n th a t a r e n e c e s s a r y to c o n v e y th e r e q u ir e d c h a r a c te r is tic s o f t h e p a r t . V i e w s , d ime n s i o n s , e t c . , s h a l l n o t e x t e n d i n t o t h e ma r g i n s o f t h e d r a w in g .
3.2.
Lines A c c e p t a b l e q u a l i t y o f r e p r o d u c t i o n s i s d e p en d e n t o n t h e d e n s i t y a n d u n i f o r mi t y o f lin e w o r k ( a n d le tte r in g ) . T yp e s o f lin e s d e s c r ib e d h e r e in a r e me r e ly lin e c o n v e n t i o n s , b u t i n e v e r y c a s e , e a c h t y p e o f l i ne s h a l l b e o p a q u e a n d o f u n i f o r m w i d t h a n d s h a ll b e u s e d o n a ll d r a w in g s o th e r tha n d i a g r a ms , s u c h a s s c h e ma t i c s , e t c .
3.2.1.
Ink Lines and Plotted Lines L in e s , w h e th e r h a n d - d r a w n o r p lo tte d , s h a ll b e o p a q u e a n d o f uniform width for each type of line. Two widths of lines, i.e., thin a n d th ic k , w ith th e ir w id th s in th e p r o p o r tio n s o f 1 :2 , s h a ll b e u s e d . The actual width of each type of line shall be governed by the size a n d s t y l e o f t h e d r a w i n g ; t h e r e l a t i v e w i d th s o f t h e l i n e s s h a l l a p p r o x ima te th o s e s h o w n in F ig u r e 4 o n p a g e 2 6 .
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Figure 4: Line Types and Conventions
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3.2.2.
27
Pencil Lines P e n c il lin e s s h a ll b e o p a q u e a n d o f u n if o r m w id th th r o u g h o u t th e ir le n g th . T h e lin e w id th s w h ic h a r e s p e c if ie d f o r in k lin e s d o n o t a p p ly to p e n c i l l i n e s . C u t t i n g a n d v ie w i n g p la n e l i n e s a r e t h e t h i c k e s t l i n e s on the drawing. However, the thick lines used for outlines and o th e r v is i b le l i n e s s h a l l b e s u f f i c i e n t l y p r o mi n e n t t o i mme d ia t e l y d if f e r e n tia te th e m f r o m lin e s u s e d f o r o th e r p u r p o s e s . H id d e n , s e c tio n in g , c e n te r , p h a n to m, e x te n s io n , d ime n s io n , a n d le a d e r lin e s s h a l l b e t h i n n e r t h a n o u t l i n e s . I n s e l e c t i n g t h e w i d th s o f p e n c i l lin e s , c o n s id e r a tio n s h a ll b e g iv e n to th e me d iu m o f r e p r o d u c tio n in v o lv e d to e n s u r e p r o p e r r e p r o d u ctio n a n d r e d u c tio n o f th e th in n e r lines.
3.2.3. 3.2.3.1.
Types of Lines Center Lines Ce n te r lin e s s h a ll b e c o mp o s e d o f lo n g a n d s h o r t d a s h e s , a lte r n a te ly and evenly spaced, with a long dash at each end. Center lines shall c r o s s w ith o u t v o id s . S e e F ig u r e 5 , b e lo w , a n d F ig u r e 6 , p a g e 2 8 .
Figure 5: Line Conventions
V e r y s h o r t c e n te r lin e s ma y b e u n b r o k e n if th e r e is n o c o n f u s io n w i t h o th e r l i n e s . C e n te r l i n e s s ha l l a l s o b e u s e d t o i n d i c a t e t h e tr a v e l o f a c e n te r . S e e F ig u r e 6 o n p a g e 2 8 .
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Figure 6: Alternate Position
3.2.3.2.
Dimension Lines D i me n s i o n l i n e s s h a l l t e r mi n a t e i n a r r o w h e a d s a t e a c h e n d . T h e y s h a l l b e u n b r o k e n e x c e p t w h e r e s p a c e i s r e q u i r e d f o r t h e d i me n s i o n . T h e p r o p e r me th o d o f s h o w in g d ime n s io n s a n d to le r a n c e s is e x p la in e d in S e c tio n 1 . 7 o f A N S I Y 1 4 . 5 M- 1 9 8 2 .
3.2.3.3.
Leaders L e a d e r s s h a ll b e u s e d to in d ic a te a p a r t o r p o r tio n to w h ic h a n u mb e r , n o te , o r o th e r r e f e r e n c e a p p lie s a n d s h a ll b e a n u n b r o k e n l i n e t e r mi n a t i n g i n a n a r r o w h e a d , d o t, o r w a v y l i n e . A r r o w h e a d s s h o u l d a l w a y s t e r mi n a t e a t a l i n e ; d o t s s h o u l d b e w i t h i n t h e o u t l i n e o f a n o b j e c t.
3.2.3.4.
Break Lines S h o r t b r e a k s s h a ll b e in d ic a te d b y s o lid f r e e h a n d lin e s . F o r lo n g b r e a k s , f u l l r u l e d l i n e s w i t h f r e e h an d z i g z a g s s h a l l b e u s e d . S h a f t s , r o d s , tu b e s , e tc . , w h ic h h a v e a p o r tio n o f th e ir le n g th b r o k e n o u t, s h a ll h a v e th e e n d s o f th e b r e a k d r a w n a s in d ic a te d in F ig u r e 7 o n page 29.
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Figure 7: Break Lines
3.2.3.5.
Phantom Lines Phantom lines shall be used to indicate the alternate position of parts of the item delineated, repeated detail, or the relative position o f a n a b s e n t p a r t a n d s h a ll b e c omp o s e d o f a lte r n a tin g o n e lo n g a n d two short dashes, evenly spaced, with a long dash at each end. See F ig u r e 5 o n p a g e 2 7 , F ig u r e 6 o n p a g e 2 8 , a n d F ig u r e 8 , b e lo w .
Figure 8: Repeated Detail
3.2.3.6.
Sectioning Lines Sectioning lines shall be used to indicate the exposed surfaces of a n o b j e c t i n a s e c t i o n a l v ie w . T h e y a r e g e n e r a l l y t h i n f u l l l i n e s , b u t ma y v a r y w ith th e k in d o f ma te r ia l s h o w n in s e c tio n .
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3.2.3.7.
Extension Lines E x t e n s i o n l i n e s a r e u s e d t o i n d i c a te t h e e x t e n s i o n o f a s u r f a c e o r t o p o in t t o a l o c a t i o n o u ts i d e t h e p a r t o u t l i n e . T h e y s t a r t w i t h a s h o r t , v is i b le g a p f r o m t h e o u t l i n e o f t h e p a r t a n d a r e u s u a l l y p e r p e n d ic u l a r t o t h e i r as s o c i a t e d d i me n s i o n l i n e s .
3.2.3.8.
Hidden Lines Hidden lines shall consist of short dashes, evenly spaced. These lin e s a r e u s e d to s h o w th e h id d e n f e a t u r e s o f a p a r t . T h e y s h a l l a l w a y s b e g in w i t h a d a s h i n c o n ta c t w i t h t h e l i n e f r o m w h i c h t h e y b e g in , e x c e p t w h e n s u c h a d a s h w o u ld f o r m a c o n tin u a tio n o f a f u ll l i n e . D a s h e s s h a l l t o u c h a t c o r ne r s , a n d a r c s s h a ll b e g in w ith d a s h e s o n th e ta n g e n t p o in ts . S e e F ig u r e 5 o n p a g e 2 7 a n d F ig u r e 8 on page 29.
3.2.3.9.
Stitch Lines S t i t c h l i n e s s h a l l b e u s e d t o i n d ic a t e t h e s t i t c h in g o r s e w i n g l i n e s o n a n a r tic le a n d s h a ll c o n s is t o f a s e r ie s o f v e r y s h o r t d a s h e s , a p p r o x ima te ly h a lf th e le n g th o f d a s h o r h id d e n lin e s , e v e n ly s p a c e d . L o n g l i n e s o f s t i t c h i n g ma y b e i n d i c a t e d b y a s e r i e s o f stitch lines connected by phantom lines.
3.2.3.10.
Outlines or Visible Lines T h e o u t l i n e o r v is i b le l i n e s h a l l b e u s e d f o r a l l l i n e s o n t h e d r a w i n g r e p r e s e n tin g v is ib le lin e s o n th e o b j e c t; s e e F ig u r e 5 o n p a g e 2 7 .
3.2.3.11.
Datum Lines D a tu m lin e s s h a ll b e u s e d to in d ic a te th e p o s itio n o f a d a tu m p la n e a n d s h a ll c o n s is t o f o n e lo n g d a s h a n d tw o s h o r t d a s h e s , e v e n ly spaced.
3.2.3.12.
Cutting-Plane/Viewing-Plane Lines The cutting-plane lines shall be used to indicate a plane or planes in w h ic h a s e c tio n is ta k e n . T h e v ie w in g - p la n e lin e s s h a ll b e u s e d to indicate the plane or planes from which a surface or surfaces are v i e w e d . O n s i mp l e v i e w s , t h e c u t t i n g p l a n e s s h a l l b e i n d i c a t e d a s s h o w n in F ig u r e 9 o n p a g e 3 1 . V ie w s h a ll b e s h o w n in b a c k o f th e cutting plane (3rd angle).
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Figure 9: Full Sectional View
O n c o mp l e x v i e w s , o r w h e n t h e c u ttin g p la n e s a r e b e n t o r o f f s e t, th e c u ttin g p la n e s s h a ll b e in d ic a te d a s s h o w n in F ig u r e 1 0 .
Figure 10: Offset Sections
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3.3.
ENGINEERING DRAWING STANDARDS MANUAL
Lettering and Numerals A ll le tte r in g s h a ll b e u p p e r c a s e ( c a p ita l le tte r s ) . N u mb e r s s h a ll b e A r a b ic n u me r a l s . T h e l e t t e r i n g a n d n u me r a l s s ha l l a l w y a s b e p l a c e d i n a h o r i z o n t a l reading position as far as practicable. Other than this, lettering shall be in a h o r iz o n ta l r e a d in g p o s itio n w h e n th e d r a w in g is r o ta te d 9 0 ° c lo c k w is e . L e g ib le le tte r in g is e s s e n tia l f o r r e p r o d u c tio n s . L e tte r s a n d /o r n u me r a ls s h a ll n o t r u n to g e th e r . W h e n t y p e w r i t t e n l e t t e r s o r d ig i t s a r e u s e d o n d r a w i n g s o r r e l a t e d d a t a , n o th in g s ma l l e r t h a n p ic a t y p e i s p e r mi t t e d .
3.3.1.
Style O t h e r t h a n b e i n g u p p e r c a s e R o man a n d p l a c e d i n a h o r i z o n t a l r e a d in g p o s itio n , th e le tte r in g is th a t o f th e in d iv id u a l's s tyle .
3.3.2.
Heights L e t t e r i n g h e i g h ts s h a l l b e a s f o l l o w s :
Drawing Feature: D r a w in g n u mb e r in id e n tif ic a tio n b lo c k s Drawing title and description of drawing type above L/M D r a w i n g s u b t i t l e , b o r d e r , l e t t e r s , a n d n u me r a l s S e c tio n , d e ta il, v ie w , a n d ta b u la tio n le tte r s D e s c r i p t i o n t i t l e s o f s e c t i o n , d e t a i l , v ie w , n o te s , a n d ta b u la tio n s D i me n s i o n s , t o l e r a n c e s , l i mi t s , n o te s , s u b t i t l e s , t a b le s , r e v is io n , a n d z o n e le tte r s o n th e f ie ld o f th e d r a w in g L is t o f ma te r ia ls in f o r ma tio n , n a me b lo c k s , u s e d o n , a n d next assy
Lettering h e ig h t in inches .25 .25 .19 .25 .19 .16 .14
Note: Use of fit text is not allowed.
3.4.
Scale D r a w in g s s h a ll b e ma d e to f u ll s c a le u n le s s t h e p a r t s ( o r a s s e mb l y) a r e t o o l a r g e t o p e r mi t i t o r s o s ma l l a n d c o mp l e x t h a t d r a w i n g t o a n e n l a r g e d s c a l e i s e s s e n t i a l f o r c l a r i t y . W h e n t h e ma i n v i e w s o f l a r ge p a r t s a r e d r a w n t o a r e d u c e d s c a l e , t h e d e ta il v ie w s “ ta k e n ” to c la r if y d e ta il s h o u ld b e ma d e to f u ll s c a le w h e n e v e r p o s s ib le . W h e n th e p a r t h a s b e e n d r a w n to a n e n l a r g e d s c a l e f o r c l a r i t y , i t i s n o t n e c e s s a r y t o ma k e a n a c t u a l - s i z e v i e w . a.
T h e s c a l e s p r e f e r r e d f o r e n g i n e e r i n g d r a w in g s a r e f u ll s iz e 1 /1 , r e d u c e d 1 /2 , 1 /4 , 1 /1 0 , 1 /2 0 , a n d e n la r g e d 2 /1 , 4 /1 , 1 0 /1 , 2 0 /1 . T h e c o mp u te r d a ta b a s e f o r t h e f o r ma t s i z e s h a l l b e 1 / 1 a t a l l t i me s .
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EXCEPTION: Ce r ta in d r a w in g s o r f ig u r e s , b y th e ir v e r y n a tu r e , c a n n o t b e d r a w n to a s p e c i f i c s c a l e ( f o r e x a mp l e , w i r i n g an d s c h e ma tic d ia g r a m d r a w in g s . ) T h e scale designation for these cases is “NONE.” See “b,” below. b . T h e s c a l e , a s n o t e d a b o v e , o r t h e w o r d “ N O N E ” mu s t b e e n t e r e d i n t h e T i t l e b lo c k . D o n o t u s e th e w o r d “ S I Z E ” f o llo w in g th e r a tio . T h e n o ta tio n s “ 1 /4 & N O T E D ” o r “ 1 /2 & N O T E D , ” e tc . , a p p ly to th o s e d r a w in g s o n w h ic h th e ma in v ie w s a r e t o a r e d u c e d s c a l e a n d a u x i l i a r y v ie w s a r e t o s o me o th e r s c a l e . c . T o ma i n t a i n c o n s i s t e n c y w i t h t i t l e b lo c k c a l l o u t f o r s c a l e , d e t a i l v ie w s s h a l l b e n o te d th u s :
DETAIL
-A
SCALE 1/1
Note: The scale of the view shall be stated only when it differs from that noted in t h e T i t l e b lo c k , w h i c h r e p r e s e n t s t h e ma j o r i t y o f v ie w s a n d s e c t i o n s . d . O r ig in a l p e n c il d r a w in g s s h o u ld b e to s c a le w ith in 0 . 0 3 in c h . W h e n c h a n g e s to an existing drawing take place, it is required to indicate that a particular f e a tu r e is n o t to s c a le b y u n d e r lin in g th e d ime n s io n s w ith a s tr a ig h t lin e . e.
3.5.
T h e g e o me tr y o f CA D - p r o d u c e d d r a w in g s s h a ll b e e n te r e d in to th e e le c tr o n ic d a ta b a s e a t o n e - to - o n e ( f u ll) s c a le .
Positioning the Part on the Drawing I n s ta lla tio n s s h a ll u s u a lly b e p o s itio n e d o n th e d r a w in g a s th e y w o u ld b e s e e n w h e n v ie w e d f r o m th e le f t s id e o r to p s id e o f th e e q u ip me n t w ith its f o r w a r d e n d p o in t i n g t o t h e l e f t . I f c la r ity c a n b e g r e a tly imp r o v e d b y a p o s itio n th a t r e s u lts in f e w e r h id d e n lin e s a n d f o r e s h o r te n e d p r o j e c tio n s , th e n th a t p o s itio n s h o u ld b e u s e d , a n d th e a b o v e r u le s h o u ld b e d is r e g a r d e d . S u c h in s ta n c e s w o u ld b e a d o o r o r d o o r j a mb w h ic h in s ta lls o n th e r ig h t s id e b e in g d r a w n w ith th e f o r w a r d p o r tio n to th e r ig h t, o r a n u mb e r o f ite ms in s ta lle d o n th e f o r w a r d s id e o f a p a n e l b e in g d r a w n lo o k in g a t the forward side. P a r ts a n d min o r a s s e mb lie s a r e n o t n e c e s s a r ily d r a w n in th e p o s itio n th e y a s s u me i n t h e e q u i p me n t . T h e y ma y b e d r a w n wi t h s o me s u r f a c e , s i d e , o r r e f e r e n c e l i n e p a r a lle l o r p e r p e n d ic u la r to th e lo w e r b o r d e r o f th e d r a w in g . L a th e - tu r n e d p a r ts a r e u s u a l l y d r a w n w i t h t h e l ar g e r d i a me t e r s t o t h e l e f t .
3.5.1.
Picturization U n n e c e s s a r y d e t a i l s h a l l b e o mi t t e d f r o m a l l v ie w s a n d s e c t i o n s i f c l a r i t y i s n o t s a c r i f i c e d a n d i f d r a f t i n g t i me i s r e d u c e d . S e e F i g u r e 11 on page 34.
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Figure 11: Details of Auxiliary
3.5.2.
Sections a.
A s e c tio n a l v ie w s h a ll b e ma d e th r o u g h a n o u ts id e v ie w a n d n o t th r o u g h a n o th e r s e c tio n a l v ie w . S e e F ig u r e 1 2 o n p a g e 3 5 .
b . T h e lo c a tio n o f a s e c tio n is i n d i c a t e d b y a c u t t i n g p l a n e w i t h r e f e r e n c e le tte r s a n d a r r o w h e a d s s h o w in g th e d ir e c tio n in w h ic h the section is viewed. c.
S e c tio n a l v ie w s s h a ll n o t p r o j e c t d i r e c t l y a h e a d o f t h e c u t t i n g p la n e a r r o w h e a d s a n d s h o u ld b e a s n e a r a s p r a c tic a b le to th e p o r tio n s o f th e d r a w in g th a t th e y c la r if y.
d . T h e a x e s o f s e c tio n a l v ie w s s h o u ld n o t b e r o ta te d ; h o w e v e r , th e c u ttin g p la n e ma y v a r y in d ir e c tio n ( s e e F ig u r e 1 2 ) . I f v ie w s h a v e to b e r o ta te d , th e a n g le a n d d ir e c tio n o f r o ta tio n mu s t b e g iv e n . e.
Visible and invisible outlines beyond the cutting plane should n o t b e s h o w n u n le s s n e c e s s a r y f o r c la r if ic a tio n .
f.
S h a f ts , b o lts , n u ts , e tc . , w h ic h a r e in a c u ttin g p la n e s h o u ld n o t b e c r o s s - h a tc h e d .
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35
NOT RECOMMENDED SECTION ROTATED XX° CW
A
INCORRECT PROJECTION WRONG SIDE OF CUTTING PLANE NOT ACCEPTABLE
A CORRECT BUT NOT IN LINE OF PROJECTION
SECTION
A-A
CORRECT BUT NOT IN LINE OF PROJECTION
Figure 12: Designation and Positioning of Sectional Views
g . T h e c r o s s - h a tc h in g s ymb o l f o r c a s t ir o n s h o u ld b e u s e d r e g a r d le s s o f ma te r ia l a s s h o w n in F ig u r e 1 3 . I f e s s e n tia l f o r c la r ity, ma te r ia l f r o m w h ic h th e p a r ts a r e ma d e s h o u ld b e in d ic a te d b y th e c o n v e n tio n s g iv e n in A N S I Y 1 4 . 2 M- 1 9 7 9 .
CAST OR MALLEABLE IRON AND GENERAL USE FOR ALL MATERIALS
Figure 13: Conventions for Material
h . W h e n s e c t i o n s a r e r e mo t e l y l oc a t e d , z o n e i n f o r ma t i o n s h a l l b e a d d e d to b o th lo c a tio n s ( i. e . , f r o m w h e r e th e s e c tio n is ta k e n and to the location where the section is shown).
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3.5.3.
Views A v i e w i s u s e d t o e n l a r g e o r c l a rif y a p o r tio n o f th e d r a w in g . S e e F ig u r e 1 4 .
A D
5A SH3
A
A
A-A
SEE VIEW
1D SH1
SCALE 2/1
(TITLE BLOCK NOT SHOWN)
1
5
Figure 14: Clarification of a Portion of a Drawing
a.
P r o j e c te d v ie w s w h ic h a r e s h o w n a lo n g c o mmo n c e n te r lin e s to t h e i r o r i g i n n e e d n o t b e i d e n t i f i e d . V i e w s l o c a t e d d ir e c t l y a h e a d o f v i e w i n g p l a n e a r r o w h e a d s a r e a b s o l u t e l y p r o h ib i t e d .
b . “ T r a n s p o r te d ” v ie w s o r s e c tio n s a r e th o s e w h ic h a r e n o t d ir e c t p r o j e c tio n s . T h e y mu s t b e id e n tif ie d w h e r e s h o w n , b y le tte r s , a n d a t t h e i r o r i g i n b y t h e c u t t i n g p la n e l i n e s a n d l e t t e r s . c.
V ie w s s h o u ld n o t b e r o ta te d ; h o w e v e r , if v ie w s h a v e to b e r o t a t e d f o r a l e g i t i ma t e r e a s o n , t h e a n g le a n d d ir e c t i o n o f r o ta tio n mu s t b e g iv e n .
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3.5.4.
37
Details A d e ta il is a p a r tia l v ie w w h ic h s h o w s a p o r tio n o f a n o th e r v ie w in t h e s a me p la n e a n d w i l l u s u a l l y d e p ic t g r e a t e r d e t a i l . D e t a i l s s h o u ld n o t b e r o ta te d . S e e F ig u r e 1 5 .
DETAIL
A
SCALE 4/1
SEE DETAIL
A
Figure 15: Identification of Details
3.5.5.
Identification of Sections, Views, and Details a.
I d e n tif yin g le tte r s f o r s e c tio n s , v ie w s , a n d d e ta ils a r e a s s ig n e d in a lp h a b e tic a l s e q u e n c e a s f o llo w s : F o r s e c tio n s a n d s u c h v ie w s a s “ A - A ” in F ig u r e 1 4 o n p a g e 3 6 , u s e h yp h e n a te d le tte r s . A f te r “ Z - Z , ” b e g in : “A A - A A , ” “ A B - A B , ” e t c .
b . F o r e n c ir c le d d e ta ils s u c h a s d e ta il “ A ” in F ig u r e 1 5 , u s e s in g le letters. After “Z,” begin: “AA,” “AB,” etc. c.
The letters “I,” “O,” “Q,” and “X,” either as a single letter or as d o u b le - le tte r e n tr ie s , s h a ll n o t b e u s e d . A d e s ig n a te d le tte r o r c o mb in a tio n o f le tte r s o n a r e le a s e d d r a w in g s h a ll n o t b e u s e d f o r a n o th e r s e c tio n , v ie w , o r d e ta il o n th e s a me d r a w in g .
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3.5.6.
Locating Sections, Views, and Details O n z o n e d a n d /o r mu l t i s h e e t d r a w i n g s , a v ie w , s e c t i o n , o r d e t a i l a n d t h e p o r t i o n o f t h e d r a w i n g i t c l a r i f i es s h a l l b e c r o s s - r e f e r e n c e d a s follows:
Reference on Original Drawing to View on Clarifying Sheet
SEE VIEW
A-A
5A SH3
Reference at View on Clarifying Sheet to Original Drawing
VIEW
A-A
SCALE 4/1
1D SH1
N o te : Z o n e b lo c k s iz e is 1 /2 - in c h s q u a r e .
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4.
TYPES OF DRAWINGS
4.1.
Altered or Selected Vendor Part Drawing A lte r e d v e n d o r p a r t o r s e le c te d v e n d o r p a r t d r a w in g s s h a ll b e p r e p a r e d o n G S F C f o r ma t w h e n a n e x is tin g v e n d o r p a r t c a n n o t b e u s e d a s is a n d it is d e s ir e d to d o c u me n t a n d c o n tr o l th e a lte r a tio n o r s e le ctio n o f th e p a r t. P r e p a r a tio n s h a ll n o t b e i n i t i a t e d u n t i l t h e v e n d o r h a s b e e n r eq u e s t e d t o ma k e t h e a l t e r a t i o n o r s e le c tio n , s u p p ly h is n u mb e r , a n d s u p p ly d o c u me n ta tio n . W h e n th e d r a w in g is p r e p a r e d b y G S F C, it s h a ll s p e c if y th e p a r t to b e a lte r e d o r s e le c te d b y v e n d o r n u mb e r , n a me , a n d a d d r e s s a n d s h a ll c o mp le te ly d e lin e a te th e a lte r a tio n o r selection. In addition, the drawing shall specify reidentification of the part by th e G S F C p a r t n u mb e r . A n a lte r e d o r s e le c te d v e n d o r p a r t d r a w in g s h a ll b e id e n tif ie d b y th e w o r d s “ A lte r e d V e n d o r P a r t D r a w in g ” imme d ia te ly a b o v e th e T i t l e b lo c k . S e e F i g u r e 1 6 .
REVISION
1.
DESCRIPTION
SYM
NOTES: UNLESS OTHERWISE SPECIFIED
DATE
APPROVAL
ALTERED PART SOURCE INFORMATION; PART NO: 118-R-0715 RELAY VENDOR; LEACH CORP. ADDRESS; LOS ANGELES, CALIF.
2.
INK STAMP PART NUMBER PER .......... SUGESTED SOURCE OF SUPPLY (INK) ............... ............... ...............
ø
.218
+ .006 - .000
-1 HOLE
ENLARGE EXISTING
ø
.166 HOLE
FOLD REV
LINE
AT THIS LOCATION ONLY
GC
ALTERED VENDOR PART DRAWING
SEE NOTE 2 (REIDENTIFY THE PART TO GSFC PART
REQ'D
ITEM
REQ'D
DESCRIPTION
PART NO.
NO.
NUMBER GCXXXXXXX.)
MATERIAL
MATERIAL SPEC & NO.
LIST OF MATERIAL
UNLESS OTHERWISE SPECIFIED-DIMENSIONS ARE IN INCHES
NATIONAL AERONAUTICS AND
TOLERANCES: .XX
±.02
Goddard Space Flight Center
SPACE ADMINISTRATION
.XXX
±.005
FRACTIONS
±1°
125
NAME
±1/16
INIT
GREENBELT, MARYLAND
DATE DRAWINGINTERPRETED PER GSFC-X673-64-1
DESIGNER REMOVE ALL BURRS AND SHARP EDGES R .010 OR CHAMFER MAX.
FLIGHT HARDWARE/POST FAB HARDNESS TEST REQ'D HARDNESS TEST NOT REQUIRED
DRAWN
TITLE
NON FLIGHT
TEST HARDNESS PER ASTM E-18, LOCATION OPTIONAL
CHECKED
TEST HARDNESS PER ASTM E-18 WHERE INDICATED APPROVED
ON FIELD OF DRAWING THUS NO NON-DESTRUCTIVE EXAMINATION (NDE) REQ'D
APPROVED
NDE REQUIRED PER S-313-009 CODE THIS DRAWING WAS PRODUCED USING
REV
APPROVED-STRESS SOFTWARE:
GC
VERSION: APPROVED-ENGINEER
FILE NAME:
USED ON
CODE
SCALE
WT
SH
LINE
FOLD
NEXT ASSY
Figure 16: Sample Altered or Selected Vendor Part Drawing
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4.2.
ENGINEERING DRAWING STANDARDS MANUAL
Assembly Drawing A n a s s e mb ly d r a w in g s h o w s tw o o r mo r e s e p a r a b le p a r ts j o in e d to f o r m a s to c k a b le ite m, o r a g r o u p o f a s s e mb lie s r e q u ir e d to f o r m a n a s s e mb ly o f h ig h e r o r d e r . F ig u r e 1 7 s h o w s a n e x a mp le o f a n a s s e mb ly d r a w in g w h e n a s e p a r a te p a r ts lis t is r e q u ir e d . F ig u r e 3 4 , “ A s s e mb ly D r a w in g W ith L is t o f Ma te r ia l, ” o n p a g e 8 0 , s h o w s a n a s s e mb ly d r a w in g w ith th e L is t o f Ma te r ia l o n th e d r a w in g . Re f e r a ls o to S e c tio n 5 . 1 , “ P a r t N u mb e r in g , ” o n p a g e 6 1 .
REVISION DESCRIPTION
SYM
1
GXXXXXX5
DATE
APPROVAL
GXXXXXX1
7
MS15795-305
8
MS35649-63
2
2X
9
MS35234-17
10
MS15795-305
11
MS35649-44
2X
GXXXXXX6
4
GXXXXXX3
5
GXXXXXX4
FOLD
3
REV
4X
LINE
2X
2X
GXXXXXX2
GC
6
REQ'D
ITEM
REQ'D
PART NO.
MATERIAL
DESCRIPTION
NO.
MATERIAL SPEC & NO.
LIST OF MATERIAL
UNLESS OTHERWISE SPECIFIED-DIMENSIONS ARE IN INCHES
NATIONAL AERONAUTICS AND
TOLERANCES: .XX
±.02
Goddard Space Flight Center
SPACE ADMINISTRATION
.XXX
±.005
FRACTIONS
±1°
125
NAME
±1/16
INIT
GREENBELT, MARYLAND
DATE DRAWING INTERPRETED PER GSFC-X673-64-1
DESIGNER REMOVE ALL BURRS AND SHARP EDGES R .010 OR CHAMFER MAX.
FLIGHT HARDWARE/POST FAB HARDNESS TEST REQ'D HARDNESS TEST NOT REQUIRED
DRAWN
TITLE
NON FLIGHT
TEST HARDNESS PER ASTM E-18, LOCATION OPTIONAL
CHECKED
TEST HARDNESS PER ASTM E-18 WHERE INDICATED APPROVED
ON FIELD OF DRAWING THUS NO NON-DESTRUCTIVE EXAMINATION (NDE) REQ'D
APPROVED
NDE REQUIRED PER S-313-009 CODE THIS DRAWING WAS PRODUCED USING
REV
APPROVED-STRESS SOFTWARE:
GC
VERSION: APPROVED-ENGINEER NEXT ASSY
USED ON
CODE
SCALE
WT
SH
LINE
FOLD
FILE NAME:
Figure 17: Sample Assembly Drawing
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4.3.
Detail Drawing A d e t a i l d r a w i n g s h o w s a l l t h e i n f o r ma t i o n n e c e s s a r y f o r f a b r i c a t i n g a n i t e m, in c lu d in g th e ma te r ia l f r o m w h ic h it is ma d e a n d th o s e f in is h e s , p r o te c tiv e c o a tin g s , a n d p r o c e s s e s r e q u ir e d to f a b ric a te th e e n d p r o d u c t. O n ly o n e ite m ( d e ta il p a r t) s h a ll b e p r e s e n te d p e r d r a w in g . S e e F ig u r e 1 8 .
REVISION DESCRIPTION
SYM
DATE
APPROVAL
NOTES: UNLESS OTHERWISE SPECIFIED 1.
IRIDITE IN ACCORDANCE WITH MIL-C-5541. CLASS1A.
2
RUBBER STAMP .125 HIGH CHARACTERS AS SHOWN USING ____________. ORIGINAL SOURCE OF SUPPLY: _________ INSERT COMPLETE ADDRESS _________
O .500
REV
FOLD
.750
LINE
1.500
1.000
1.120
BAR
REQ'D
ITEM
REQ'D
AL ALY
PART NO.
QQ-A-225/8 6061-T6
MATERIAL
DESCRIPTION
NO.
GC
2.250
MATERIAL SPEC & NO.
LIST OF MATERIAL
UNLESS OTHERWISE SPECIFIED-DIMENSIONS ARE IN INCHES
NATIONAL AERONAUTICS AND
TOLERANCES: .XX
±.02
Goddard Space Flight Center
SPACE ADMINISTRATION
.XXX
±.005
FRACTIONS
±1°
125
NAME
±1/16
INIT
GREENBELT, MARYLAND
DATE DRAWING INTERPRETED PER GSFC-X673-64-1
DESIGNER REMOVE ALL BURRS AND SHARP EDGES R .010 OR CHAMFER MAX.
FLIGHT HARDWARE/POST FAB HARDNESS TEST REQ'D HARDNESS TEST NOT REQUIRED
DRAWN
TITLE
NON FLIGHT
TEST HARDNESS PER ASTME-18, LOCATION OPTIONAL
CHECKED
TEST HARDNESS PER ASTME-18 WHERE INDICATED APPROVED
ON FIELD OF DRAWING THUS NO NON-DESTRUCTIVE EXAMINATION (NDE) REQ'D
APPROVED
NDE REQUIRED PER S-313-009 CODE THIS DRAWINGWAS PRODUCED USING
REV
APPROVED-STRESS SOFTWARE:
GC
VERSION: APPROVED-ENGINEER NEXT ASSY
USED ON
CODE
SCALE
WT
SH
LINE
FOLD
FILE NAME:
Figure 18: Sample Detail Drawing
I n th e c a s e o f in s e p a r a b le p a r ts ( s u c h a s th o s e th a t a r e w e ld e d , r iv e te d , b o n d e d , o r b r a z e d , e t c . ) w h i c h f o r m a n i n t e g r a l u n i t ( p a r t ) n o t c a p a b l e o f b e i n g d i s a s s e mb l e d f o r r e p l a c e me n t , r e f e r t o p a r a g r a p h 4 . 6 e n t i t l e d “ I n s e p a r a b l e A s s e mb l y D r a w i n g ” on page 44. M u l t i d e t a i l d r a w i n g s a r e n o t a l l o w e d . T h e G S F C r e q u ir e s a u n iq u e d r a w i n g n u mb e r p e r p a r t s o t h a t e a c h p a r t c a n b e i n d i v i d u a l l y e s t i ma t e d b y f a b r i c a t o r s a n d id e n tif ie d f o r in s p e c tio n a n d c o n f ig u r a tio n tr a c k in g .
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ENGINEERING DRAWING STANDARDS MANUAL
4.4.
Drawing Tree A d r a w i n g t r e e i s u s e d t o c o n t r o l t h e d ev e l o p me n t o f d r a w i n g s a n d t h e i r p l a c e i n th e o v e r a ll s c h e me o f th e p r o j e c t. A lth o u g h th is typ e d r a w in g is n o t a r e q u i r e me n t f o r e a c h p r o j e c t , w h e n u s e d p ro p e r l y a n d k e p t u p t o d a t e , i t c a n b e a v a lu a b le ma n a g e me n t a id a n d c a n b e co n ta in e d in a c o n f ig u r a tio n ma n a g e me n t d a ta b a s e . S e e F ig u r e 1 9 . TOP ASSY CONFIGURATION DWG GE XXXXXXX
PAYLOAD ELECTRICAL
4,5 C
GJ 2450200
CONTROL DWGS *
-
GROUND HANDLING
INSTALLATION DRAWINGS
INTERFACE
MODULE-A GJ 2456000
-
-
GJ 2452100
EQUIPMENT GE 2450300
A
-
SOLAR ARRAY BATTERY AVIONI CS ASSY GF 2456050
INSTALLATION A
TBD
ENCODER BOX GE 2456042
GE 2452200
UV SENSOR INSTL -
GD 2452250
BRACKET, CONNECTOR GD 2456070
-
FRAME, WELDING GE 2450350
-
GE 2450351
TYPICAL SYMBOL LIST
1 -
AUTOCAD DRAWING * **
BRACKET, DUAL
** GD 2456789
7 D
DOLLY ASSY GJ 2450330
STAND, MOUNTI NG
-
DUAL BRACKET ASSY GE 2456010
2 -
LIFTING FIXTURE GE 2450360
A
DRAWING SIZE DRAWING NUMBER PRE-ASSIGNED
CABLE, HOIST
DRAWING NUMBER
-
MULTI-USE DRAWING -
TBD
GD 2450365
-
DRAWING REVISION LETTER LIST OUTSTANDING EO NOS.
DUAL HINGE 3
C
SLI NG
TO BE DETERMINED
GE 2456290
GF 24550362
-
WASHER
SPRING, EXTERNAL GC 2456273
GC 2450424
B
SPRING, DETENT GC 2456272
Figure 19: Sample Drawing Tree
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4.5.
43
Electrical/Electronic Drawings E l e c t r i c a l / e l e c t r o n i c d r a w i n g s a r e p r e p a r e d to d e p ic t s c h e ma tic s , w ir in g d ia g r a ms , c a b l e i n t e r c o n n e c t i o n s , a n d d e t a i l e d c a b l e a s s e mb l y d r a w i n g s .
4.5.1.
Electrical and Electronic Symbols A p p l i c a t i o n : S y mb o l s s h a l l b e i n a c c o r d a n c e w i t h A N S I Y 3 2 . 2 1 9 7 5 , G r a p h ic S y m b o ls fo r E le c tr ic a l a n d E le c tr o n ic D ia g r a m s ( o r la te r r e v is io n s ) , u n le s s o th e r w is e n o te d . G r a p h i c e l e c t r i c a l w i r in g s y mb o l s f o r a r c h i t e c tu r a l a n d e l e c t r i c a l la yo u t d r a w in g s s h a ll c o n f o r m to A N S I Y 3 2 . 9 - 1 9 7 2 , G r a p h ic S y m b o ls fo r E le c tr ic a l W ir in g a n d L a y o u t D ia g r a m s U s e d in A r c h ite c tu r e a n d B u ild in g Co n s tr u c tio n ( o r l a t e r r e v i s i o n s ) .
4.5.2.
Electrical and Electronic Diagrams A p p l i c a t i o n : D i a g r a ms s h a l l b e i n a c c o r d a n c e w i t h A N S I Y 1 4 . 1 5 1 9 6 6 ( R- 7 3 ) E le c tr ic a l a n d E le c tr o n ic D ia g r a m s ( o r l a t e r r e v is io n s ) ; A N S I Y 1 4 . 1 5 a - 1 9 7 1 , I n te r c o n n e c tio n D ia g r a m s, s u b s e c tio n 1 5 - 1 1 ; A N S I Y 1 4 . 1 5 b - 1 9 7 3 , E le c tr ic a l a n d E le c tr o n ic s D ia g r a m s , s u b s e c tio n s 1 5 - 1 th r o u g h 1 5 - 1 0 , a n d 1 5 - 1 2 .
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ENGINEERING DRAWING STANDARDS MANUAL
4.6.
Inseparable Assembly Drawing A n i n s e p a r a b l e a s s e mb l y d r a w i n g d e l i n e a te s i t e ms ( p i e c e s ) w h i c h a r e s e p a r a t e l y f a b r i c a t e d a n d a r e p e r ma n e n t l y j o i n e d t o g e t h e r ( e . g . , w e l d e d , b r a z e d , r i v e t e d , n a ile d , b o n d e d , e tc . ) to f o r m a n in te g r a l u n it ( p a r t) n o t c a p a b le o f b e in g r e a d ily d is a s s e mb le d . A n in s e p a r a b le a s s e mb ly d r a w in g ma y b e p r e p a r e d in lie u o f in d iv id u a l mo n o d e ta il d r a w in g s f o r in s ep a r a b le a s s e mb lie s in te n d e d to b e procured and replaced as a unit, where (except for standard hardware) the s e p a r a t e p a r t s a r e o f s i mi l a r o r c o mp a t i b l e ma t e r i a l s . S e e F i g u r e 2 0 ( a l l d a t a , s u c h a s n o te s a n d lis t o f ma te r ia l, a r e n o t s h o w n ) .
REVISION DESCRIPTION
SYM
2X
DATE
APPROVAL
.006
ø .125+ - .000
.063 4.000
.063
.250
3.500 R .125
1.000
1.250 .875 .250 TYP
1.960
.750
.063
2
MS33588-X
3
MS20426-X
FOLD
1
GC
REV
GXXXXXX2
LINE
1.000
REQ'D
ITEM
REQ'D
PART NO.
MATERIAL
DESCRIPTION
NO.
MATERIAL SPEC & NO.
LIST OF MATERIAL
UNLESS OTHERWISE SPECIFIED-DIMENSIONS ARE IN INCHES
NATIONAL AERONAUTICS AND
TOLERANCES: .XX
±.02
Goddard Space Flight Center
SPACE ADMINISTRATION
.XXX
±.005
FRACTIONS
±1°
125
NAME
±1/16
INIT
GREENBELT, MARYLAND
DATE DRAWINGINTERPRETED PER GSFC-X673-64-1
DESIGNER REMOVE ALL BURRS AND SHARP EDGES R .010 OR CHAMFER MAX.
FLIGHT HARDWARE/POST FAB HARDNESS TEST REQ'D HARDNESS TEST NOT REQUIRED
DRAWN
TITLE
NON FLIGHT
TEST HARDNESS PER ASTM E-18, LOCATION OPTIONAL
CHECKED
TEST HARDNESS PER ASTM E-18 WHERE INDICATED APPROVED
ON FIELD OF DRAWING THUS NO NON-DESTRUCTIVE EXAMINATION (NDE) REQ'D
APPROVED
NDE REQUIRED PER S-313-009 CODE THIS DRAWINGWAS PRODUCED USING
REV
APPROVED-STRESS SOFTWARE:
GC
VERSION: APPROVED-ENGINEER NEXT ASSY
USED ON
CODE
SCALE
WT
SH
LINE
FOLD
FILE NAME:
Figure 20: Sample Inseparable Assembly Drawing
A n in s e p a r a b le a s s e mb ly d r a w in g s h a ll f u lly d e f in e th e e n d p r o d u c t o r d e ta il a s s e mb l y a s a s s e mb l e d . P i e c e s o f t h e i ns e p a r a b l e a s s e mb l y ma y b e d e t a i l e d e i t h e r o n s e p a r a te d e ta il d r a w in g s o r o n th e in s e p a r a b le a s s e mb ly d r a w in g its e lf . I n th e c a s e o f w e ld me n ts , th e p a r ts s h a ll n o t b e in d iv id u a lly d e ta ile d o n s e p a r a te d r a w in g s ( d u e to th e c o n s u ma b le ma te r ia l a llo w a n c e s th a t w o u ld h a v e to b e s h o w n o n d e t a i l d r a w i n g s ) , e x c e p t i n c a s e s w h e r e e x t e n s i v e ma c h i n i n g mig h t b e necessary.
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ENGINEERING DRAWING STANDARDS MANUAL
4.7.
Installation Assembly Drawing A n in s ta lla tio n a s s e mb ly d r a w in g s h o w s w h e r e a n d h o w p a r ts a n d /o r a s s e mb lie s a r e in s ta lle d r e la tiv e to s u p p o r tin g s tr u c tu r e o r a s s o c ia te d ite ms . I t s h o w s lo c a tin g d ime n s io n s , to le r a n c in g , s p e c if ie s a tta c h in g p a r ts ( s u c h a s r iv e ts , b o lts , o r s c r e w s ) a n d s p e c i f i c a d j u s t me n t s , a s s e mb l y i n s t r u c t i o n s , a n d p r o c e s s e s r e q u ir e d f o r c o mp le tin g a n d in s p e c tin g th e in s ta lla tio n . F ig u r e 2 1 s h o w s a n e x a mp le w h e n a s e p a r a te p a r ts lis t is r e q u ir e d .
REVISION DESCRIPTION
SYM
DATE
APPROVAL
(GXXXXXX9)
ø
.250
+ .004 - .000
1
4
GXXXXXX2
5
GXXXXXX3
GXXXXXX1
(PEEN ENDS)
ø 4.300 1.812
GXXXXXX4
6
ø
6.000
7
2X ø .500 GXXXXXX8
2
8
2.500
GXXXXXX5
GXXXXXX6 FOLD
GXXXXX12 GXXXXX13 10
11
GXXXXX10
GXXXXX11
REV
9
LINE
1.380 3
1.000
.625
GC
1.150
REQ'D
ITEM
REQ'D
PART NO.
MATERIAL
DESCRIPTION
NO.
MATERIAL SPEC & NO.
LIST OF MATERIAL
UNLESS OTHERWISE SPECIFIED-DIMENSIONS ARE IN INCHES
NATIONAL AERONAUTICS AND
TOLERANCES: .XX
±.02
Goddard Space Flight Center
SPACE ADMINISTRATION
.XXX
±.005
FRACTIONS
±1°
125
NAME
±1/16
INIT
GREENBELT, MARYLAND
DATE DRAWING INTERPRETED PER GSFC-X673-64-1
DESIGNER REMOVE ALL BURRS AND SHARP EDGES R .010 OR CHAMFER MAX.
FLIGHT HARDWARE/POST FAB HARDNESS TEST REQ'D HARDNESS TEST NOT REQUIRED
DRAWN
TITLE
NON FLIGHT
TEST HARDNESS PER ASTM E-18, LOCATION OPTIONAL
CHECKED
TEST HARDNESS PER ASTM E-18 WHERE INDICATED APPROVED
ON FIELD OF DRAWING THUS NO NON-DESTRUCTIVE EXAMINATION (NDE) REQ'D
APPROVED
NDE REQUIRED PER S-313-009 CODE THIS DRAWING WAS PRODUCED USING
REV
APPROVED-STRESS SOFTWARE:
GC
VERSION: APPROVED-ENGINEER NEXT ASSY
USED ON
CODE
SCALE
WT
SH
LINE
FOLD
FILE NAME:
Figure 21: Sample Installation Assembly Drawing
a. That portion of the structure into which the installation is being installed shall b e s h o w n in p h a n to m a n d id e n tif ie d b y its p a r t n u mb e r . S u c h id e n tif ic a tio n s s h a ll b e in d ic a te d a s r e f e r e n c e in f o r ma tio n b y e n c lo s u r e o f th e p a r t n u mb e r in p a r e n th e s e s o r b y u s e o f th e s ymb o l “ RE F . ” b . A p p lic a b le d a tu m p o in ts o r p la n e s , s u c h a s c e n t e r l i n e s o f s t r u c t u r e , p l a n e o f s ymme tr y, s ta tio n p la n e s , e tc . , s h a ll b e s h o w n a n d id e n tif ie d . c.
P a r t s ma y b e d e t a i l e d i n p l a c e o n i ns t a l l a t i o n d r a w i n g s w h e n c o n v e n i e n t .
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G O D D AR D S P AC E F L I G H T C E N T E R , G r e e n b e l t , M a r y l a n d
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ENGINEERING DRAWING STANDARDS MANUAL
4.8.
Interface Control Drawing A n i n t e r f a c e c o n t r o l d r a w i n g s h a l l b e u s e d t o ma i n t a i n c o mp a t i b i l i t y o f a l l p h ys i c a l a n d f u n c t i o n a l d e s i g n s b e t w e e n d if f e r e n t e n g in e e r i n g d e s i g n a c t i v i t i e s . T h e d r a w in g s h a ll c o mmu n ic a te d e s ig n c r ite r ia s u c h a s d ime n s io n s , h o le a n d /o r b o l t s i z e s , h a r d w a r e , a n d u l t i ma t e c h a n g e s r e l a t i v e t o c o f u n c t i o n in g s y s t e ms . “Interface Control Drawing” shall be added directly above the Title block. No l i s t o f ma t e r i a l s i s p e r mi t t e d o n t h i s t y p e o f d r a w i n g ; i t i s n o t t o b e u s e d t o ma n u f a c tu r e p a r ts . S e e F ig u r e s 2 2 a , b e lo w , a n d 2 2 b o n p a g e 4 8 .
REVISION DESCRIPTION
SYM
DATE
APPROVAL
NOTES: UNLESS OTHERWISE SPECIFIED 1
2
SUPPLIED BY XZ CORP. 12 WATERLANE BOSS, CT 06132
12 x ø.281± ø.007
THIS DRAWING IS NOT TO
.004 .000 23.250
M A B C
BE USED FOR FABRICATION OR INSPECTION. 15.500
7.750
+Y .375
3.000 1.500
-B6.000 12.000
FOLD
A-A REV
SECTION
LINE
9.000
24.000
-C+Y CONTROL BOX #5
23°-30'
+Z
GC
INTERFACE CONTROL DRAWING 7.000 REQ'D
ITEM
REQ'D
PART NO.
NATIONAL AERONAUTICS AND
TOLERANCES:
A
.XX
±.02
Goddard Space Flight Center
SPACE ADMINISTRATION
.XXX
±.005
FRACTIONS
±1°
125
NAME
±1/16
INIT
REF
GREENBELT, MARYLAND
DATE DRAWINGINTERPRETED PER GSFC-X673-64-1
DESIGNER
PLATFORM #5
MATERIAL SPEC & NO.
LIST OF MATERIAL
UNLESS OTHERWISE SPECIFIED-DIMENSIONS ARE IN INCHES
A
MATERIAL
DESCRIPTION
NO.
-A-
REMOVE ALL BURRS AND SHARP EDGES R .010 OR CHAMFER MAX.
FLIGHT HARDWARE/POST FAB HARDNESS TEST REQ'D
1
HARDNESS TEST NOT REQUIRED
TEST HARDNESS PER ASTM E-18, LOCATION OPTIONAL
VIEWLOOKING OUTBOARD
DRAWN
TITLE
NON FLIGHT CHECKED
TEST HARDNESS PER ASTM E-18 WHERE INDICATED APPROVED
ON FIELD OF DRAWING THUS NO NON-DESTRUCTIVE EXAMINATION (NDE) REQ'D
APPROVED
NDE REQUIRED PER S-313-009 CODE THIS DRAWINGWAS PRODUCED USING
REV
APPROVED-STRESS SOFTWARE:
GC
VERSION: APPROVED-ENGINEER NEXT ASSY
USED ON
CODE
SCALE
WT
SH
LINE
FOLD
FILE NAME:
Figure 22a: Sample Interface Control Drawing
X-673-64-1F REV 001 DEC. ‘94
G O D D AR D S P AC E F L I G H T C E N T E R , G r e e n b e l t , M a r y l a n d
43.526
17.375
49.013
46.83
7.00
AND ROLLERS
4.00 FOR PALLET
WL 140.00 C5A
75.914
Z414
4.00
POINT
C5A SHIPPING
1.0
UAR IN
FILE NAME:
VERSION:
POSITION
THIS DRAWING WAS PRODUCED USING SOFTWARE:
AXIS
48.00
36.361
MMS
TURNOVER
TURNOVER
31.839
Z 414
55.162
CONFIGURATION 47.902
2.072
HINGE
Z 300.76 REF
1.5
MPF
ATTEN. FR.
9.562
11.17
5.00
Z 400
9.388 ADAPTER
6.93 SPACER
COVERS
INCLUDING
68.524
WL 302.00 C5A
AND REMOVE FOR SHIPPING.
REQD
REQD
PART NO.
52.914
LOAD
±.005
±.02
±1°
±1/16
FRACTIONS
TEST HARDNESS PER ASTM E-18 WHERE INDICATED
NEXT ASSY
NDE REQUIRED PER S-313-009 CODE
USED ON
NO NON-DESTRUCTIVE EXAMINATION (NDE) REQ'D
ON FIELD OF DRAWING THUS
16.17
125
NON FLIGHT
/POST FAB HARDNESS TEST REQ'D
TEST HARDNESS PER ASTM E-18, LOCATION OPTIONAL
HARDNESS TEST NOT REQUIRED
FLIGHT HARDWARE
REMOVE ALL BURRS AND SHARP EDGES R .010 OR CHAMFER MAX.
.XXX
.XX
TOLERANCES:
4.39
REVISION
SIDE VIEW
DESCRIPTION
DESCRIPTION
APPROVED-ENGINEER
APPROVED-STRESS
APPROVED
APPROVED
CHECKED
DRAWN
DESIGNER
NAME
SPACE ADMINISTRATION
NATIONAL AERONAUTICS AND
INIT
LIST OF MATERIAL
DATE
CODE
GC
TITLE
SCALE
APPROVAL
WT
SH
REV
GREENBELT, MARYLAND
MATERIAL SPEC & NO.
STRUT
SUPPORT
REMOVABLE
DATE
DRAWING INTERPRETED PER GSFC-X673-64-1
Goddard Space Flight Center
MATERIAL
102.314 FOR STATIC SUPPORT ON POSTS
105.314 FOR TURNOVER EQUIPMENT INSTALLATION
104.314 FOR TURNOVER MOTION (SHOWN)
SYM
INTERFACE CONTROL DRAWING
NOTE 1
46.83
SPACER
SLOTTED
JACK
CELL
COVER
TRUNNION
1.00
Ø190.00
R 101.431
UNLESS OTHERWISE SPECIFIED-DIMENSIONS ARE IN INCHES
NO.
ITEM
69.75
65.239
FOLD
SUPPORT POSTS FOLD AWAY FOR TURNOVER
LINE
X-673-64-1F REV 001 DEC. ‘94 LINE
FOLD
GC
1. NOTES: UNLESS OTHERWISE SPECIFIED
ENGINEERING DRAWING STANDARDS MANUAL
47
G O D D AR D S P AC E F L I G H T C E N T E R , G r e e n b e l t , M a r y l a n d
REV
48
ENGINEERING DRAWING STANDARDS MANUAL
Figure 22b: Sample Interface Control Drawing Note: Format is too small. No information should appear beneath revision block or above list of material. Choose a larger format in this case.
4.9.
Matched-Set Drawing A ma tc h e d - s e t d r a w in g d e p ic ts p a r ts th a t a r e ma c h in e - ma tc h e d o r o th e r w is e ma te d a n d f o r w h i c h r e p l a c e me n t a s a ma t c h e d s e t o r p a i r i s e s s e n t i a l . T h e o p e r a t i n g o r ma t i n g c h a r a c t e r i s t i c s o f t h e ma t c h e d p a r ts ( s e t ) s h a l l b e i n d i c a t e d . T h e p a r t s s h a ll b e u n iq u e ly ma r k e d w ith a s e r ia l n u mb e r id e n tif ic a tio n to in d ic a te a ma tc h e d s e t. S e e F ig u r e 2 3 ( a ll d a ta r e q u ir e d f o r th e f in is h e d d r a w in g a r e n o t s h o w n ) . T h e d r a w i n g t i t l e b e c o me s a n a s s e mb l y, a l t h o u g h t h e p a r t s a r e n o t a c t u a l l y a t t a c h e d . “ M a i n t a i n a n d F u r nis h O n ly A s A Ma tc h e d S e t” s h a ll b e a d d e d d ir e c tly above the Title block or List of Material.
REVISION DESCRIPTION
SYM
APPROVAL
GXXXXXX1
2
GXXXXXX2
GXXXXXX3
REV
FOLD
3
LINE
1
DATE
LAP .00008 TO .00015 DIAMETRAL CLEARANCE
GC
MAINTAIN AND FURNISH ONLY AS A MATCHED SET
REQD
ITEM
REQD
PART NO.
MATERIAL
DESCRIPTION
NO.
MATERIAL SPEC & NO.
LIST OF MATERIAL
UNLESS OTHERWISE SPECIFIED-DIMENSIONS ARE IN INCHES
NATIONAL AERONAUTICS AND
TOLERANCES: .XX
±.02
Goddard Space Flight Center
SPACE ADMINISTRATION
.XXX
±.005
FRACTIONS
±1°
125
NAME
±1/16
INIT
GREENBELT, MARYLAND
DATE DRAWING INTERPRETED PER GSFC-X673-64-1
DESIGNER REMOVE ALL BURRS AND SHARP EDGES R .010 OR CHAMFER MAX.
FLIGHT HARDWARE/POST FAB HARDNESS TEST REQ'D HARDNESS TEST NOT REQUIRED
DRAWN
TITLE
NON FLIGHT
TEST HARDNESS PER ASTM E-18, LOCATION OPTIONAL
CHECKED
TEST HARDNESS PER ASTM E-18 WHERE INDICATED APPROVED
ON FIELD OF DRAWING THUS NO NON-DESTRUCTIVE EXAMINATION (NDE) REQ'D
APPROVED
NDE REQUIRED PER S-313-009 CODE THIS DRAWING WAS PRODUCED USING
REV
APPROVED-STRESS SOFTWARE:
GC
VERSION: APPROVED-ENGINEER NEXT ASSY
USED ON
CODE
SCALE
WT
SH
LINE
FOLD
FILE NAME:
Figure 23: Sample Matched-Set Drawing
X-673-64-1F REV 001 DEC. ‘94
G O D D AR D S P AC E F L I G H T C E N T E R , G r e e n b e l t , M a r y l a n d
ENGINEERING DRAWING STANDARDS MANUAL
4.10.
49
Mechanical Schematic A me c h a n i c a l s c h e ma t i c d ia g r a m d r a w i n g i l l u s t r a t e s t h e o p e r a t i o n a l s e q u e n c e o r a r r a n g e me n t o f a me c h a n ic a l d e v ic e . D ime n s io n s a n d r e la tiv e s iz e s o f ite ms ma y b e s h o w n to in d ic a te me c h a n ic a l r e la tio n s h ip . S e e F ig u r e 2 4 .
X-673-64-1F REV 001 DEC. ‘94
G O D D AR D S P AC E F L I G H T C E N T E R , G r e e n b e l t , M a r y l a n d
RANGE SCALE
SUPER-
44T 32P
26T 32P
44T
88T
24T 64P 51T
GEAR SEGMENT 66T
72T 32P
ELEVATION DIFFERENTIAL
MST 66P
34T 64P
DEFLECTION MIRROR
VERTICAL
ALL GEARS 46P.
ENTRY
66T
66T
21T
60T 64P
QUADRUPLE
32P
36T
24T
65L0G 8R 46
32P
20T
72T
20T
180T
LOCK
LINE
44T
(SPIDER)
102T
24T
105T 32P
6
FILE NAME:
SOFTWARE:
L08 8R
COUPLING
72T
90T
VERSION:
5
25
REQ'D
REQ'D
PART NO.
.005
.02
.1
.1/16
FRACTIONS
TEST HARDNESS PER ASTM E-18 WHERE INDICATED
NEXT ASSY
NDE REQUIRED PER S-313-009 CODE
USED ON
NO NON-DESTRUCTIVE EXAMINATION (NDE) REQ'D
ON FIELD OF DRAWING THUS
125
NON FLIGHT
/POST FAB HARDNESS TEST REQ'D
TEST HARDNESS PER ASTM E-18, LOCATION OPTIONAL
HARDNESS TEST NOT REQUIRED
FLIGHT HARDWARE
REMOVE ALL BURRS AND SHARP EDGES R .010 OR CHAMFER MAX.
.XXX
.XX
TOLERANCES:
UNLESS OTHERWISE SPECIFIED-DIMENSIONS ARE IN INCHES
NO.
ITEM
RANGE KNOB (2065 REVS .005)
AZIMUTH BOMBSIGHT KNOB (6MLS/REV) 150REV
BAL CORR KNOB (80REVS-.005)
L0G8R
STOP
ELEVATION BOMBSIGHT KNOB (6ML/REV)
COUPLING
LOCK
LINE
72T
20T
135T
27T
THD RH
DOUBLE
24TRI
COMPENSATOR
AMMUNITION SELECTION KNOB (91 REVS .005)
53T
62T
21T 32P 72T
72T
25
64T
45T
GEARS
L08 R
36T
24T
27T
THIS DRAWING WAS PRODUCED USING
TRANSMITTER
90T 32P
BALLISTIC CORRECTION DIFFERRENTIAL
53T 32P
BALLISTIC CAM
REVERSE CAM
DOUBLE
24TPI RH
24TPI LH
INCREASE IN SUPERELEVATION.
ALL DIRECTIONAL ARROWS INDICATE
GUN LAYING RETICLE
2.
1.
FOLD
NOTES: UNLESS OTHERWISE SPECIFIED
LINE
X-673-64-1F REV 001 DEC. ‘94 DESCRIPTION
APPROVED-ENGINEER
APPROVED-STRESS
APPROVED
APPROVED
CHECKED
DRAWN
DESIGNER
NAME
SPACE ADMINISTRATION
NATIONAL AERONAUTICS AND
INIT
LIST OF MATERIAL
SYM
REVISION
DATE
CODE
GC
TITLE
SCALE
WT
APPROVAL
SH
REV
GREENBELT, MARYLAND
MATERIAL SPEC & NO.
DATE
DRAWING INTERPRETED PER GSFC-X673-64-1
Goddard Space Flight Center
MATERIAL
DESCRIPTION
REV
LINE
FOLD
GC
50 ENGINEERING DRAWING STANDARDS MANUAL
Figure 24: Sample Mechanical Schematic
G O D D AR D S P AC E F L I G H T C E N T E R , G r e e n b e l t , M a r y l a n d
51
ENGINEERING DRAWING STANDARDS MANUAL
4.11.
Modification Drawing Mo d if ic a tio n d r a w in g s d e lin e a te c h a n g e s to d e liv e r e d ite ms , s to c k a b le ite ms ( e . g . , S ta n d a r d P a r t D r a w in g o f h o n e yc o mb p a n e l b la n k s ) , a s s e mb lie s , in s ta lla tio n s , o r s ys te ms . D r a w in g s a r e p r e p a r e d to a d d , r e mo v e , o r r e w o r k ite ms , e q u ip me n t i n s t a l l a t i o n s , o r s y s t e ms t o s a t i s f y t h e u s i n g a c t i v i t y ' s r e q u ir e me n ts . T h e y a l s o i n c o r p o r a t e ma n d a t o r y c h a n g e s ( e . g . , s a f e t y , r e l i a b i l i t y , o r a p p l i c a t i o n e x t e n s i o n ) in d e liv e r e d e q u ip me n t. A mo d if ic a tio n d r a w in g s h a ll b e id e n tif ie d b y th e w o r d s “ M o d i f i c a t i o n D r a w i n g ” i mme d i a t e l y a b o v e t h e T i t l e b l o ck . T h i s t y p e o f d r a w i n g h a s a ls o b e e n k n o w n o r r e f e r r e d to a s a “ Ma k e F r o m D r a w in g . ”
4.12.
Outline Drawing A n o u t l i n e d r a w i n g i s a d r a w i n g t h a t d e f i n e s t h e e x t e r n a l c o n to u r o f a n i t e m, u s u a lly b y s h o w in g th e p r o j e c te d v ie w s in tw o o r th r e e p e r p e n d ic u la r p la n e s . T w o t y p e s o f o u t l i n e d r a w i n g s a r e d e p ic t e d i n F i g u r e s 2 5 a , b e l o w , a n d 2 5 b o n page 52. 15MMAXIMUM SPACECRAFT AND TELESCOPE
APPROX 3M
PAM-A 3M
SECTION
SOLAR ARRAY STOWED
ATTITUDE CONTROL THRUSTERS
STAR TRACKER
DATA ANTENNA
DATA ANTENNA
APOGEE ROCKET MOTORS
SUN SHADE SHOWN STOWED
APPROX 1M DIA TELESCOPE
OUTLINE OF SHUTTLE PAYLOAD ENVELOPE
STOWED IN SHUTTLE BAY FOR PAM-A LAUNCH
Figure 25a: First Sample Outline Drawing
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SHUTTLE TRANSPORTATION SYSTEM
COBE SATELLITE
PAYLOAD INSTALLATION +Z Looking out of the plane of paper
576.00
584.00 207.06 186.00
SOLAR ARRAY PANELS
760.50
-Y
+Y 943.50
96.68
217.22
1069.00
SPACECRAFT LENGTH 1108.33 1123.50
1305.50
1307.00
+X Looking aft
Figure 25b: Second Sample Outline Drawing
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4.13.
Source Control Drawing A s o u r c e c o n tr o l d r a w in g s h a ll b e u s e d to limit p r o c u r e me n t o f a v e n d o r - d e s ig n e d a n d ma n u f a c tu r e d p a r t ( o r a s s e mb ly) to th a t s o u r c e o r s o u r c e s t h a t e x c l u s i v e l y p r o v id e th e p e r f o r ma n c e , in s ta lla tio n , a n d i n t e r c h a n g e a b l e c h a r a c t e r i s t i c s o f t h e p a r t s e le c te d a n d te s te d f o r a s p e c if ic a p p lic a tio n . I n th e e v e n t th e v e n d o r s h a ll n o t p r o v id e d r a w in g s a s d e s c r ib e d in p a r a g r a p h 4 . 1 4 . d o n p a g e 5 6 , th e s o u r c e c o n tr o l d r a w in g s h a ll in c lu d e th e s a me d e s c r ip tio n o f th e p a r t a s r e q u ir e d o n s p e c if ic a tio n c o n tr o l d r a w in g s . I f v e n d o r d r a w in g s a r e ma d e a v a ila b le , th e c o n te n t o f th e s o u r c e c o n tr o l d r a w in g s h a ll b e limite d to v e n d o r 's p a r t n u mb e r , n a me , a n d a d d r e s s . I n e i t h e r c a s e , t he f o llo w in g n o te s h a ll a p p e a r o n th e s o u r c e c o n tr o l d r a w in g : “ O n ly th e p a r t( s ) s p e c if ie d o n th is d r a w in g a n d id e n tif ie d b y v e n d o r 's n a me ( s ) , a d d r e s s ( e s ) , a n d p a r t n u mb e r ( s ) h a s ( h a v e ) b e e n te s te d a n d a p p r o v e d b y G S F C f o r u s e i n n a me o f i t e m. A s u b s t i t u t e p a r t s h a l l n o t b e u s e d w ith o u t p r io r te s tin g a n d a p p r o v a l b y G S F C. ” S e e F ig u r e 2 6 .
REVISION DESCRIPTION
SYM
DATE
APPROVAL
NOTES: UNLESS OTHERWISE SPECIFIED 1.
ONLY THE PART SPECIFIED ON THIS DRAWING AND IDENTIFIED BY VENDOR'S NAME, ADDRESS AND PART NUMBER HAS BEEN TESTED AND APPROVED BY GSFC FOR USE IN MODEL XYZ. A SUBSTITUTE PART SHALL NOT BE USED WITHOUT PRIOR TESTING AND APPROVAL BY GSFC.
2.
APPROVED SOURCE:
FOLD REV
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JONES MFG. CO., STREET ADDRESS, CHICAGO, IL PART NUMBER XX3-X4XX
GC
SOURCE CONTROL DRAWING
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UNLESS OTHERWISE SPECIFIED-DIMENSIONS ARE IN INCHES
NATIONAL AERONAUTICS AND
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±.02
Goddard Space Flight Center
SPACE ADMINISTRATION
.XXX
±.005
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NAME
±1/16
INIT
GREENBELT, MARYLAND
DATE DRAWING INTERPRETED PER GSFC-X673-64-1
DESIGNER REMOVE ALL BURRS AND SHARP EDGES R .010 OR CHAMFER MAX.
FLIGHT HARDWARE/POST FAB HARDNESS TEST REQ'D HARDNESS TEST NOT REQUIRED
DRAWN
TITLE
NON FLIGHT
TEST HARDNESS PER ASTM E-18, LOCATION OPTIONAL
CHECKED
TEST HARDNESS PER ASTM E-18 WHERE INDICATED APPROVED
ON FIELD OF DRAWING THUS NO NON-DESTRUCTIVE EXAMINATION (NDE) REQ'D
APPROVED
NDE REQUIRED PER S-313-009 CODE THIS DRAWING WAS PRODUCED USING
REV
APPROVED-STRESS SOFTWARE:
GC
VERSION: APPROVED-ENGINEER NEXT ASSY
USED ON
CODE
SCALE
WT
SH
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FILE NAME:
Figure 26: Sample Source Control Drawing
a.
T h e s o u r c e c o n tr o l d r a w in g n u mb e r is n o t a p a r t n u mb e r . T h e v e n d o r p a r t its e lf s h a ll b e id e n tif ie d b y th e v e n d o r 's id e n tif yin g n u mb e r .
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b . T h e a s s e mb ly ( o r in s ta lla tio n ) d r a w in g s h a ll c a ll o u t th e p a r t b y s o u r c e c o n tr o l d r a w in g n u mb e r . I n th e L is t o f Ma te r ia l ( p a r ts lis t) o f th e d r a w in g , th e s o u r c e c o n t r o l d r a w i n g n u mb e r s h a l l b e a c c o mp a n i e d b y t h e f o l l o w i n g n o t e : “ V e n d o r P a r t— s e e s o u r c e c o n tr o l d r a w in g . ” A s o u r c e c o n tr o l d r a w in g s h a ll b e i d e n t i f i e d b y t h e w o r d s “ S o u r c e C o n t r o l D r a w i n g ” i mme d i a t e l y a b o v e t h e T i t l e b lo c k . c.
4.14.
A s o u r c e c o n tr o l d r a w in g s h a ll n o t u p g r a d e a v e n d o r 's p a r t b e yo n d th e v e n d o r 's s tip u la tio n s .
Specification Control Drawing Specification control drawings are prepared to record the characteristics of a v e n d o r - d e s ig n e d a n d ma n u f a c tu r e d p a r t ( o r a s s e mb ly) . T h is typ e o f d r a w in g ma y a ls o b e u s e d to d o c u me n t G S F C p a r ts th a t a r e s e n t to a u n iq u e v e n d o r to p e r f o r m a s p e c i f i c o p e r a t i o n b e c a u s e o f s p e c i a l eq u i p me n t a n d / o r h a r d w a r e o n l y a v a i l a b l e t h e r e . S u c h c h a r a c t e r i s tic s a r e s iz e , s h a p e , mo u n tin g d ime n s io n s , a n d o th e r d e s ig n r e q u ir e me n ts , in c lu d in g te s ts , w h e n a p p lic a b le , th a t c o u ld b e o b ta in e d f r o m th e v e n d o r 's ma n u f a c tu r in g d r a w in g s if th e y w e r e ma d e a v a ila b le . T h e v e n d o r 's p a r t n u mb e r , n a me , a n d a d d r e s s s h a ll b e in c lu d e d , e ith e r in n o te o r ta b le f o r m. S e e F ig u r e 2 7 .
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REVISION DESCRIPTION
SYM
DATE
APPROVAL
VENDOR PART NO.
VENDOR NAME & ADDRESS SMITH ENGINEERING COMPANY
XA3-X29XX
BUFFALO. N.Y.
PRODUCTION TEST PROCEDURE WITH PORT 3
PERMISSIBLE LEAKAGE
PLUGGED APPLY
AT RATE OF
COMMENTS
PRESSURE AS FOLLOWS
INTERNAL
EXTERNAL
1 DROP PER HR
5 PSI AT
NONE
AT PORT 1
PORT 2 2250 PSI
NONE
AT PORT 2
NONE
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PORT 1 SHOULD BE HELD
BE SURE THAT
DOWN DURING
SEALINGPOPPET
THESE TESTS
IS LOOSE IN VALVE WHEN
AT PORT 1
2250 PSI
NONE
AT PORT 1
NONE
AT POR 2
EACH TEST
SHOULD BE HELD
PRESSURE
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IS APPLIED
THESE TESTS
.438-20 UNF-3B FOR .25 OD TUBING PER AND 10050 3 PLACES REV
3X
PORT 2
FOLD
PORT 1
NONE
LINE
1 DROP PER HR
5 PSI AT
PORT 2
1.250 PORT 1
GC
SPECIFICATION CONTROL DRAWING
PORT 3
ø 2X .020
1.190
REQD
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DESCRIPTION
NO.
2.380
MATERIAL SPEC & NO.
LIST OF MATERIAL
UNLESS OTHERWISE SPECIFIED-DIMENSIONS ARE IN INCHES
NATIONAL AERONAUTICS AND
TOLERANCES: .XX
±.02
Goddard Space Flight Center
SPACE ADMINISTRATION
.XXX
±.005
FRACTIONS
±1°
125
NAME
±1/16
INIT
GREENBELT, MARYLAND
DATE DRAWING INTERPRETED PER GSFC-X673-64-1
DESIGNER REMOVE ALL BURRS AND SHARP EDGES R .010 OR CHAMFER MAX.
FLIGHT HARDWARE/POST FAB HARDNESS TEST REQ'D HARDNESS TEST NOT REQUIRED
DRAWN
TITLE
NON FLIGHT
TEST HARDNESS PER ASTM E-18, LOCATION OPTIONAL
CHECKED
TEST HARDNESS PER ASTM E-18 WHERE INDICATED APPROVED
ON FIELD OF DRAWING THUS NO NON-DESTRUCTIVE EXAMINATION (NDE) REQ'D
APPROVED
NDE REQUIRED PER S-313-009 CODE THIS DRAWING WAS PRODUCED USING
REV
APPROVED-STRESS SOFTWARE:
GC
VERSION: APPROVED-ENGINEER NEXT ASSY
USED ON
CODE
SCALE
WT
SH
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FOLD
FILE NAME:
Figure 27: Sample Specification Control Drawing a.
T h e s p e c if ic a tio n c o n tr o l d r a w in g n u mb e r is n o t a p a r t n u mb e r . T h e v e n d o r p a r t its e lf s h a ll b e id e n tif ie d b y th e v e n d o r 's id e n tif yin g n u mb e r .
b . T h e a s s e mb l y ( o r i n s t a l l a t i o n ) d r a w i n g s h a l l c a l l o u t t h e p a r t b y t h e s p e c if ic a tio n c o n tr o l d r a w in g n u mb e r . I n th e L is t o f Ma te r ia l ( p a r ts lis t) o f t h e d r a w i n g , t h e s p e c i f i c a t i o n c o n t r ol d r a w i n g n u mb e r s h a l l b e a c c o mp a n i e d b y th e n o te “ V e n d o r P a r t— s e e s p e c if ic a tio n c o n tr o l d r a w in g . ” A s p e c if ic a tio n c o n tr o l d r a w in g s h a ll b e id e n tif ie d b y th e w o r d s “ S p e c if ic a tio n Co n tr o l D r a w i n g ” i mme d i a t e l y a b o v e t h e T i t l e b l o c k . c . A s p e c i f i c a t i o n c o n tr o l d r a w i n g d o e s n o t p r e v e n t p r o c u r e me n t f r o m mu l t i p l e s o u r c e s w h e n th e v e n d o r p a r t h a s b e e n d e te r min e d to b e e q u iv a le n t to o th e r v e n d o r p a r t s b y t h e F e d e r a l C a t a l o g in g P r o g r a m, r e s u l t i n g i n F e d e r a l I t e m I d e n tif ic a tio n N u mb e r ( F I I N ) n u mb e r a s s ig n me n t o r w h e n th e p a r t is ma n u f a c tu r e d b y a lic e n s e e o f th e v e n d o r .
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d . T h e p r e p a r a tio n o f s p e c if ic a tio n c o n tr o l d r a w in g s c a n b e a v o id e d b y p r o c u r in g th e v e n d o r 's ma n u f a c tu r in g d r a w in g s . I n th e e v e n t th e v e n d o r c la ims p r o p r ie ta r y r ig h ts a n d r e f u s e s to p r o v id e h is ma n u f a c tu r in g d r a w in g s , h e s h a ll b e r e q u e s t e d t o f u r n i s h a n o u t l i n e d r a w i n g o f h is p a r t s u f f i c i e n t t o i n c l u d e t h e r e q u ir e me n ts s ta te d a b o v e . W h e n th e v e n d o r p r o v id e s e ith e r typ e o f d r a w in g s ( i . e . , ma n u f a c t u r i n g d r a w i n g s o r a n o u t l i n e d r a w i n g ) , t h e p a r t n u mb e r c a l l o u t o n th e d r a w in g s h a ll b e b y th e v e n d o r 's n u mb e r . e.
4.15.
A s p e c if ic a tio n c o n tr o l d r a w in g s h a ll n o t u p g r a d e a v e n d o r 's p a r t b e yo n d th e v e n d o r 's s tip u la tio n s .
Standard Part Drawing S ta n d a r d p a r ts s h a ll b e s e le c te d f r o m g o v er n me n t a n d in d u s tr y s ta n d a r d s in th a t order of precedence. If neither of these contain a part satisfactory for the design n e e d s , a d r a w i n g s h a l l b e p r e p a r e d . B e f o r e p r e p a r a tio n , it mu s t b e d e te r min e d th a t th e p a r t s h a ll b e a G S F C s ta n d a r d p a r t, in w h ic h c a s e it s h a ll b e d r a f te d o n G S F C s ta n d a r d ma n u a l f o r ma t.
4.16.
Tabulated Drawing A ta b u la te d d r a w in g d e p ic ts s imila r ite ms w i t h d i f f e r e n c e s i n c h a r a c t e r i s t i c s s u c h a s d ime n s io n s , ma te r ia l, f in is h , a n d o th e r r e q u ir e me n ts . T h e s e d if f e r e n c e s a r e ta b u la te d o n th e d r a w in g , th e f ix e d c h a r a c t e r i s t i c s d e p i c t e d o n c e . P ic to r ia l d if f e r e n c e s th a t a r e n o t c le a r s h o u ld b e s h o w n in v ie w s o r d e ta ils a n d s h o u ld b e p r o p e r ly la b e le d . A ta b u la te d d r a w in g p r e c lu d e s th e p r e p a r a tio n o f a n i n d i v i d u a l d r a w i n g f o r e a c h i t e m. S e e F i g u r e 2 8 .
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REVISION DESCRIPTION
SYM
NOTES:
DATE
APPROVAL
UNLESS OTHERWISE SPECIFIED 1.
PASSIVATE PER QQ-P-35, TYPE II
2.
BAG PART PER MIL-P-116, METHOD III, AND TAG WITH PART NUMBER GC1234567.
A
B 2X R .31
ø1.360 A ø3.265 A .020
A
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REV
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BAR
TABLE I
REQD
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.XX
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NATIONAL AERONAUTICS AND
TOLERANCES:
±.02
GCXXXXXX5-1
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±1°
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±1/16
INIT
GREENBELT, MARYLAND
DATE DRAWING INTERPRETED PER GSFC-X673-64-1
REMOVE ALL BURRS AND SHARP EDGES R .010 OR CHAMFER MAX.
FLIGHT HARDWARE/POST FAB HARDNESS TEST REQ'D
GCXXXXXX5-3
Goddard Space Flight Center
SPACE ADMINISTRATION
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MATERIAL SPEC & NO.
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UNLESS OTHERWISE SPECIFIED-DIMENSIONS ARE IN INCHES
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ASTM A582 /303 COND A
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DESCRIPTION
GC1234567
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COUPLER
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CHECKED
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APPROVED
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REV
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GC
VERSION:
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Figure 28: Sample Tabulated Drawing
4.17.
Tooling Drawing T o o lin g f ix tu r e s a n d te mp la te s a r e p r o d u c tio n a id s . T h e te mp la te s a r e n o t in te n d e d a s e n g in e e r in g d o c u me n ta tio n o f th e f in a l e n d ite m c o n f ig u r a tio n . T h e e n g in e e r in g d r a w in g f o r w h ic h a T o o lin g d r a w in g is b e in g p r o d u c e d s h a ll c a r r y th e f o llo w in g n o te : THESE FEATURES ARE TO BE INSTALLED USING TOOLING TEMPLATE GX-XXXXXXX ONLY. THE ACTUAL TOLERANCES ON THE FEATURES LOCATIONS ARE CONTROLLED BY THE TEMPLATE. W h e n a f f e c te d b y to o lin g , d ime n s io n s a n d th e ir to le r a n c e s s h a ll b e f la g g e d o n th e e n g in e e r in g d r a w in g to th e a b o v e n o te a n d e n c lo s e d in p a r e n th e s e s to in d ic a te r e f e r e n c e i n f o r ma t i o n o n l y.
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T h e f o llo w in g n o te s h a ll b e a d d e d to th e to o lin g d r a w in g : THIS TOOLING IS USED TO FABRICATE PIECE PART GX-XXXXXXX. T h e to o lin g d r a w in g s h a ll b e d ime n s io n e d th e s a me w a y a s th e e n g in e e r in g d r a w in g .
4.18.
Composite Material Drawing A c o mp o s ite ma te r ia l d r a w in g is a n e n g in e e r in g r e p r e s e n ta tio n o f tw o o r mo r e ma t e r i a l s i n c o mb i n a t i o n ( r e i n f o r c i n g f ib e r s a n d r e s in b in d e r ) . T h e f ib e r a n d r e s in d if f e r in f o r m o r c o mp o s itio n , a n d a r e ta ilo r e d to me e t s p e c if ic e n g in e e r in g p r o p e r t i e s . T h e d r a w i n g s h a l l s p e c i f y t h e mu l t i - p ly l a min a t e c o n f i g u r a t i o n t h a t d e f in e s th e n u mb e r o f p lie s , th e s ta c k in g s e q u e n c e , th e p ly a n g le o r ie n ta tio n , th e p r e p r e g f i b e r - r e s i n ma t e r i a l s , a n d t h e p h ys i c a l d i me n s i o n s . F o r th e f o llo w in g r e q u ir e me n ts , r e f e r to F ig u r e 2 9 a s a n e x a mp le o f a c o mp o s ite ma te r ia l d r a w in g . a.
A c o o r d in a te r e f e r e n c e a n d a n g le d ire c tio n s h a ll b e s h o w n f o r b o th th e p a r t and the stacked detail.
b . E a c h p ly s h a ll b e id e n tif ie d b y I te m N o . , a n g le , a n d th ic k n e s s , a s s h o w n in T a b le 1 o f F ig u r e 2 9 . c.
D a s h n u mb e r s ma y b e u s e d to s h o w v ar ia tio n s , s u c h a s le n g th a n d ma te r ia l, a s s h o w n in T a b le 2 o f F ig u r e 2 9 .
d . S ta c k in g s e q u e n c e c o d e ( + 3 0 /0 /- 3 0 /9 0 ) 2 S , a s s h o w n in T a b le 1 in F ig u r e 2 9 d e f in e s th e f o llo w in g f e a tu r e s : P ly 1 P ly 2 P ly 3 P ly 4 Subscript “2” Subscript “S”
+ 3 0 - d e g r e e o r ie n ta tio n 0 - d e g r e e o r ie n ta tio n - 3 0 - d e g r e e o r ie n ta tio n + 9 0 - d e g r e e o r ie n ta tio n in d ic a te s r e p e a t s e q u e n c e ( p lie s 1 – 4 ) tw o time s , f o r b u ild u p o f p lie s 5 – 8 . in d ic a te s s ymme tr y, i. e . , p lie s 1 – 8 r e p e a te d in r e v e r s e o r d e r f o r b u ild u p o f p lie s 9 – 1 6 .
T h e c o d e is r e a d ( + 3 0 /0 /- 3 0 /9 0 /+ 3 0 /0 /- 3 0 /9 0 /9 0 /- 3 0 /0 /+ 3 0 /9 0 /- 3 0 /0 /+ 3 0 ) . E x a mp le s o f o th e r v a r ia tio n s to th e c o d e a r e ( 0 3 /9 0 2 /4 5 /- 4 5 3 ) S . T h i s c o d e i s r e a d ( 0 /0 /0 /9 0 /9 0 /+ 4 5 /- 4 5 /- 4 5 /- 4 5 /- 4 5 /- 4 5 /- 4 5 /+ 4 5 /9 0 /9 0 /0 /0 /0 ) . I n t h e s a me e x a mp l e , t h e s u b s c r i p t “ T ” c a n b e u s e d in lie u o f “ S ” to d e s ig n a te th e t o t a l l a min a t e . F o r e x a mp le , ( 0 3 /9 0 2 /4 5 /- 4 5 6 /4 5 /9 0 2 /0 3 ) T . H o w e v e r , i n t h i s e x a mp le , u s in g th e “ S ” to d e n o te s ymme tr y is th e p r e f e r r e d me th o d . “ T ” is g e n e r a l l y r e s e r v e d f o r l a min a t e s w h e r e s y mme t r y i s n o t s p e c i f i e d , a s i n ( 0 /3 0 /6 0 /9 0 ) T .
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Figure 29: Composite Material Drawing Example
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5.
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NUMBERING SYSTEM FOR DRAWINGS AND SUPPORTING DOCUMENTATION T h e G S F C n u mb e r in g s ys te m f o r id e n tif yin g e n g in e e r in g d r a w in g s a n d a s s o c ia te d lis ts is b a s e d o n th e “ u n it n u mb e r ” p r in c ip le , w h e r e b y th e s a me b a s ic n u mb e r a s s ig n e d to a n a s s e mb ly d r a w in g is a ls o a p p lie d to in d e x , u s a g e , d a ta , a n d p a r ts lists. a.
D r a w in g n u mb e r s s h a ll c o n s is t o f a s s ig n e d b a s ic s e v e n - d ig it n u mb e r s , p r e f ix e d b y th e le tte r “ G ” ( s ig n if yin g G S F C) a n d a s e c o n d le tte r s ig n if yin g th e drawing size (B, C, D, E, F, or J).
b . A s s o c ia te d lis t n u mb e r s s h a ll b e th e b a s ic s e v e n - d ig it d r a w in g n u mb e r p r e f ix w i t h P L o r I L a s a p p l i c a b l e . R e f e r to D e f in itio n s p a r a g r a p h 8 . 1 o n p a g e 7 1 . c.
A ll G S F C o r g a n iz a tio n s u s in g d r a w in g n u mb e r s s h a ll ma k e th e ir r e q u e s t to th e M e c h a n i c a l S y s t e ms D i v i s io n , M e c h a n i c a l E n g i n e e r in g Br a n c h ( d e s ig n a te d c u s to d ia n ) f o r b lo c k s o f n u mb e r s f o r th e ir f lig h t h a r d w a r e a n d g r o u n d s u p p o r t e q u ip me n t.
d . T h e ma n a g e me n t o f d r a w i n g n u mb e r s b e c o me s t h e r e s p o n s i b i l i t y o f t h e e n g in e e r in g d e s ig n g r o u p to w h o m th e y a r e a s s ig n e d . Re a s s ig n me n t o f th e n u mb e r s to g r o u p s u b s e c tio n s o r in d iv id u a ls , o th e r c o n tr a c to r s o r s u b c o n tr a c to r s , o r o th e r p r o g r a ms o r p r o j e c ts mu s t b e c o n tr o lle d , r e c o r d e d , a n d ma in ta in e d b y th e Co n f ig u r a tio n Ma n a g e me n t O f f ic e r . e.
E n g in e e r in g d o c u me n ta tio n ( d r a w in g s, e n g in e e r in g c h a n g e o r d e r s , a n d c o n f ig u r a tio n c h a n g e r e q u e s ts ) s h a ll b e r e ta in e d b y th e Co n f ig u r a tio n Ma n a g e r i n t h e r e s p o n s i b l e e n g i n e e r i n g o r g a n iz a t i o n u n t i l o t h e r w i s e d i r e c t e d b y t h e Project.
f.
W h e n i t i s n e c e s s a r y t o i d e n t i f y a d ra w i n g a s a s k e t c h , t h e n u mb e r s h a l l b e a s s i g n e d b y t h e o r i g i n a t o r . T h e s k e t c h s h a l l b e ma i n t a i n e d b y t h e o r i g i n a t o r t o p r e v e n t t h e n e c e s s i t y o f a c e n t r a l c o n t r o l . S k e t c h e s s h a ll n o t b e p r e p a r e d in p l a c e o f e n g i n e e r i n g d r a w i n g s f o r p r o c u r e me n t o f mo c k u p s , mo d e l s , p r e p r o d u c tio n h a r d w a r e o r f lig h t h ar d w a r e , a n d a s s o c ia te d e q u ip me n t.
g . G S F C n u mb e r s f o r s p e c if ic a tio n s , p r o c e s s e s , a n d s t a n d a r d s s h a l l b e i s s u e d b y th e s p e c if ic o r g a n iz a tio n f o r w h ic h s u c h d o c u me n ts a r e b e in g d e v e lo p e d . P r o c e d u r e s g o v e r n in g th e p r e p a r a tio n o f G S F C s p e c if ic a tio n s , p r o c e s s e s , a n d standards shall be in accordance with GSFC-S-250-3, Guide for the P r e p a r a t i o n o f S p e c i f i c a t i o n s. T h e L i b r a r y S e r v i c e s B r a n c h o f t h e G S F C I n f o r ma t i o n M a n a g e me n t D iv i s i o n s h a l l r e c e i v e t w o co p i e s o f f i n a l , a p p r o v e d d o c u me n ts th a t a r e o f g e n e r a l in te r e s t a n d u s e . A lis t o f e x is tin g s p e c i f i c a t i o n s i s ma i n t a i n e d b y t h e L i b r a r y S e r v i c e s B r a n c h .
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h . I n th e a b s e n c e o f a p r o j e c t- d ir e c te d d o c u me n t n u mb e r in g p la n , th e f o llo w in g system shall be used:
GSFC - S - 722 - 93 - 002 - A revision letter ordinal specification number issued in given year year of specification issue Branch, Division or organization issuing & maintaining specification "S" for specification, "P" for procedure Goddard Space Flight Center
5.1.
Part Numbering E a c h d e t a i l p a r t , s u b a s s e mb l y , e t c . , s h all b e id e n tif ie d b y a p a r t n u mb e r a s follows: a.
A n ite m c o v e r e d b y a n a p p r o v e d s tan d a r d a n d u s e d w ith o u t a lte r a tio n o r s e l e c t i o n s h a l l b e i d e n t i f i e d b y t h e p r o p e r s ta n d a r d n u mb e r ( s u c h a s MS n u mb e r f o r mi l i t a r y s t a n d a r d ) , w h i c h s h a l l i n c l u d e a n y d a s h n u mb e r o r c o d e n e c e s s a r y f o r c o mp l e t e i d e n t i t y .
b . E a c h n o n s ta n d a r d ite m s h a ll b e id e n tif ie d b y a p a r t n u mb e r th a t s h a ll b e , o r s h a ll in c lu d e , th e d r a w in g n u mb e r . c.
V e n d o r - d e s ig n e d a n d ma n u f a c tu r e d p a r ts o r a s s e mb lie s s h a ll b e id e n tif ie d b y th e v e n d o r 's p a r t n u mb e r . S e e “ S p e c if ic a tio n Co n tr o l D r a w in g , ” p a r a g r a p h 4 . 1 4 o n p a g e 5 4 , a n d “ S o u r c e Co n tr o l D r a w in g , ” p a r a g r a p h 4 . 1 3 o n p a g e 5 3 .
d . A lte r e d o r s e le c te d p a r ts s h a ll b e id e n tif ie d a s r e q u ir e d . S e e “ A lte r e d o r S e le c te d V e n d o r P a r t D r a w in g , ” p a r a g r a p h 4 . 1 o n p a g e 3 9 . e.
S ymme tr ic a lly o p p o s ite p a r ts s h a ll b e d e s ig n a te d b y - 1 ( s h o w n ) a n d - 2 ( o p p o s i t e ) c a r r y i n g t h e o d d / e v e n r e l a t i o n s h i p t o h i g h e r n u mb e r s a s n e c e s s a r y . T h e p a r t s h o w n s h a ll a lw a ys b e a n o d d n u mb e r , a n d its o p p o s ite , th e n e x t h ig h e r n u mb e r .
P a r ts s h a ll b e id e n tif ie d o n th e f ie ld o f d r a w in g b y s h o w in g b o th th e id e n tif yin g p a r t n u mb e r a n d f in d n u mb e r w h e r e c r o s s - r e f e r e n c e d o n a s e p a r a te E n g in e e r in g P a r ts L is t. S e e “ S a mp le A s s e mb ly D r a w in g , ” F ig u r e 1 7 o n p a g e 4 0 . W h e n th e p a r ts a p p e a r in th e L is t o f Ma te r ia l o n th e d r a w in g , o n ly th e ite m n u mb e r is c a lle d o u t o n th e f ie ld o f th e d r a w in g . S e e F ig u r e 3 4 , “ S a mp le A s s e mb ly D r a w in g W ith L is t o f Ma te r ia l, ” o n p a g e 8 0 . A d e ta il d r a w in g d e p ic ts a s in g le d e ta il p a r t, a n d th e p a r t s h a ll b e d e s ig n a te d b y th e d r a w in g n u mb e r . S e e “ D e ta il D r a w in g , ” p a r a g r a p h 4 . 3 o n p a g e 4 1 . A n in s e p a r a b le a s s e mb ly d r a w in g d e p ic ts p a r t s p e r ma n e n t l y f a s t e n e d t o g e t h e r , a n d th e a s s e mb ly s h a ll b e d e s ig n a te d b y th e d r a w in g n u mb e r . T h e in d iv id u a l p a r ts s h a ll b e d e s ig n a te d b y p a r t n u mb e r a s d e s c r ib e d p e r “ I n s e p a r a b le A s s e mb ly D r a w in g , ” p a r a g r a p h 4 . 6 o n p a g e 4 4 .
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E a c h o f th e p a r ts s h o w n o n a ta b u la te d d r a w in g s h a ll b e id e n tif ie d b y th e d r a w in g n u mb e r s u f f ix e d w ith a d a s h n u mb e r . T h e b a s ic d r a w in g n u mb e r a lo n e s h a ll n o t b e u s e d t o i d e n t i f y a p a r t . S e e “ T a b u la te d D r a w in g , ” p a r a g r a p h 4 . 1 6 o n p a g e 5 6 . P a r t s t h a t mu s t b e ma t e d , a n d f o r w h i c h r e p l a c e me n t a s a ma t c h e d s e t o r p a i r i s r e q u i r e d , s h a l l b e a s s i g n e d a s i n g l e n u mb e r t o d e s i g n a t e e a c h ma t c h e d s e t o r p a i r . Co mp o n e n t p a r ts s h o w n in ma tc h e d - s e t d r a w in g s in s te a d o f s e p a r a te d e ta il d r a w in g s s h a ll b e id e n tif ie d b y th e id e n tif yin g p a r t n u mb e r a n d f in d n u mb e r . S e e “ Ma tc h e d - S e t D r a w in g , ” p a r a g r a p h 4 . 9 o n p a g e 4 8 .
5.2.
Find or Item Numbering U n d e r th e f in d o r ite m n u mb e r in g s ys te m, a n u mb e r is a s s ig n e d to a p a r t o r d e ta il a s s e mb l y f o r t h e p u r p o s e o f l o c a t i n g i t i n t h e f i e l d o f t h e a s s e mb l y d r a w i n g . T h e f in d o r ite m n u mb e r is a ls o s h o w n in th e E n g in e e r in g P a r ts L is t f o r a n a s s e mb ly d r a w in g , c r o s s - r e f e r e n c e d to th e p a r t n u mb e r u s e d f o r p r o c u r e me n t p u r p o s e s .
5.3.
Order of Precedence of Specifications and Standards W h e n i d e n t i c a l p a r t s o r a s s e mb l i e s o f e q u a l q u a l i t y a r e i d e n t i f i e d b y mo r e t h a n o n e d o c u me n t, th e ite m s h a ll b e r e f e r e n c e d o n d r a w in g s in th e f o llo w in g o r d e r :
5.3.1.
Group I G r o u p I c o v e r s g o v e r n me n t s p e c if ic a tio n s a n d s ta n d a r d s lis te d f o r u s e b y G S F C a n d in d u s tr y d o c u me n ts c o o r d in a te d to th e e x te n t indicated as follows in (c) and (e). a.
Co o r d in a te d f e d e r a l s p e c if ic a tio n s a n d s ta n d a r d s .
b . C o o r d in a t e d mi l i t a r y s p e c i f i c a t i o n s a n d s t a n d a r d s ( i n c l u d in g JANs, ANs, and ANDs). c.
I n d u s tr y s p e c if ic a tio n s a n d s ta n d a r d s ( e . g . , th o s e p r o mu lg a te d b y n a t i o n a l l y r e c o g n i z e d as s o c i a t i o n s , c o mmi t t e e s , a n d te c h n ic a l s o c ie tie s ) h a v in g c o o r d in a te d s ta tu s e s ta b lis h e d u n d e r p o lic ie s a n d p r o c e d u r e s o f o th e r g o v e r n me n t a g e n c ie s a n d approved for GSFC use.
d . L i mi t e d c o o r d in a t i o n mi l i t a r y a n d i n t e r i m f e d e r a l s p e c i f i c a t i o n s a n d s ta n d a r d s is s u e d b y o th e r g o v e r n me n t a g e n c ie s a n d approved for GSFC use. e.
5.3.2.
I n d u s tr y s p e c if ic a tio n s a n d s ta n d a r d s h a v in g limite d c o o r d in a tio n s ta tu s e s ta b lis h e d u n d e r p o lic ie s a n d p r o c e d u r e s o f o th e r g o v e r n me n t a g e n c ie s a n d a p p r o v e d f o r G S F C u s e .
Group II G r o u p I I c o v e r s in d u s tr y s p e c if ic a tio n s a n d s ta n d a r d s ( e . g . , th o s e p r o mu l g a t e d b y n a t i o n al l y r e c o g n i z e d a s s o c i a t i o n s , c o mmi t t e e s , a n d te c h n ic a l s o c ie tie s ) a p p r o v e d f o r u s e b y G S F C, f o r w h ic h s ta tu s e q u iv a l e n t t o mi l i t a r y d o c u me n t s h a s n o t b e e n e s t a b l i s h e d .
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5.3.3.
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Group III G r o u p I I I c o v e r s G o v e r n me n t s p e c if i c a t i o n s a n d s t a n d a r d s n o t p r e v io u s ly lis te d b y G S F C.
5.3.4.
Group IV G r o u p I V c o v e r s in d u s tr y s p e c if ic a tio n s a n d s ta n d a r d s n o t p r e v io u s ly lis te d f o r u s e b y G S F C. Co mp a n y s p e c if ic a tio n s a n d s ta n d a r d s a r e n o t to b e c o n s id e r e d a s a p a r t o f th is g r o u p . Co p ie s o f in d u s tr y s p e c if ic a tio n s a n d s ta n d a r d s s h o u ld b e o b ta in e d f r o m the association concerned.
5.3.5.
Group V G r o u p V c o v e r s c o mp a n y s p e c if ic a tio n s a n d s ta n d a r d s . Re f e r e n c e to a c o mp a n y s p e c if ic a tio n o r s ta n d a r d f o r n e w a p p lic a tio n s o r d e s ig n s s h a ll b e d is c o n tin u e d u p o n th e is s u a n c e o f a s p e c if ic a tio n or standard in Group I, II, III, or IV covering an interchangeable i t e m o f e q u iv a l e n t q u a l i t y . N o te ( a p p lic a b le to G r o u p s I , I I , I V , a n d V a b o v e ) : W h e n in d u s tr y s p e c if ic a tio n s a n d s ta n d a r d s a r e s p e c if ie d o n G S F C d r a w in g s a n d d o c u me n ts , s u c h s p e c if ic a tio n s a n d s ta n d a r d s s h a ll b e a v a ila b le to G S F C p e r s o n n e l.
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6.
ENGINEERING ORDER
6.1.
General Requirements T h e u s e o f E n g in e e r in g O r d e r ( E O ) f o r th e p u r p o s e o f r e v is in g r e le a s e d d r a w in g s is th e p r e f e r r e d me th o d o f c h a n g in g d r a w in g s , a lth o u g h th e me th o d o f d ir e c t c h a n g e to th e d r a w in g ma y b e c h o s e n b y th e p r o j e c t e n g in e e r . After an EO system is elected, it is the responsibility of that project design a c tiv ity to a s s ig n n u mb e r in g a n d ma in ta in th e d o c u me n ta tio n s ys te m. T h e a p p r o v e d E O is c o n s id e r e d a n o f f ic ia l p a r t o f th e o r ig in a l d r a w in g a n d s h a ll a l w a y s b e a v a i l a b le t o o th e r s , e v e n a f t e r i n c o r p o r a t i o n . W i t h t h i s s y s t e m, r e f e r e n c e t o E O s i n t h e r e v i s i o n b l o c k o f d r a w i n g s i s p e r mi t t e d i n p l a c e o f t h e u s u a l d e ta ile d lis tin g o f c h a n g e s .
6.2.
Format Sample T h e f o llo w in g min imu m in f o r ma tio n s h o u ld b e in c lu d e d o n a n E O f o r m. S e e F ig u r e 3 0 a o n p a g e 6 6 . 1 . D R A W I N G & R E V . L E V E L : T h e n u mb e r o f th e d r a w in g to b e c h a n g e d a n d th e r e v i s i o n l e v e l a f f e c t e d . W h e r e t h e c h an g e i s e x a c t l y t h e s a me o n mo r e t h a n o n e d r a w in g , a d d a n a s te r is k to th e d r a w in g a n d r e v is io n le v e l b lo c k ; th e n a d d th e d r a w in g n u mb e r s a lo n g w ith th e n e x t a p p lic a b le E O n u mb e r to th e a s te r is k ta b le o n th e f ie ld o f c h a n g e o n E O p a g e 1 . I f mo r e th a n o n e E O p a g e is r e q u ir e d , t h e a d d i t i o n a l E O p a g e s w i l l o n ly n o te t h a t t h o s e p a g e s a f f e c t t h e list of drawings the EO is written against. 2 . I N C . R E V . : T h e r e v is io n le tte r to b e p r o v id e d b y th e Co n f ig u r a tio n Ma n a g e r ( CM) a t th e time o f d r a w in g c h a n g e in c o r p o r a tio n . O u ts ta n d in g E O n u mb e r s ma y b e in c o r p o r a te d u n d e r o n e r e v is io n le tte r . 3 . T I T L E : T i t l e o f t h e d r a w i n g t o b e r e v is e d . 4 . N E X T A S S E MBL Y : N e x t a s s e mb ly n u mb e r o f th e d r a w in g s a f f e c te d b y th e change. 5 . U S E D O N : T h e typ e o f e q u ip me n t s u c h a s G r o u n d - S u p p o r t E q u ip me n t ( G S E ) o r F lig h t ( F L T ) . 6 . P R O G R A M: N a me o f p r o g r a m. 7 . R E A S O N : R e a s o n w h y t h e c h a n g e i s n e c e s s a r y r a th e r th a n d e s c r ip tio n o f th e c h a n g e . A C o n f i g u r a t i o n C h a n g e R e q u e s t ( C C R ) n u mb e r a n d c l a s s t o b e p r o v id e d b y th e p r o j e c t e n g in e e r w h e r e a p p lic a b le o r w h e n r e q u ir e d b y th e CM. 8. TYPE OF EO: A d v a n c e N o t ic e o f C h a n g e : A c h a n g e t o t h e d r a w i n g t h a t s h a l l t a k e p l a c e a t s o me f u tu r e d a te . S e v e r a l E O s ma y b e in c o r p o r a te d u n d e r th e s a me r e v is io n letter.
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D e v ia t io n : A r e c o r d o f a c h a n g e t o a ma n u f a c t u r e d p a r t . T h e c h a n g e i s t o a c c e p t a d i s c r e p a n c y c o r r e c t i o n i n a p a r t. T h e E O w o u l d b e a s s i g n e d a b a c k s la s h ( \) in s te a d o f a n E O r e v is io n let t e r a n d i d e n t i f i e d a s a “ D e v i a t i o n f o r ” in th e r e v is io n b lo c k . N o p h ys ic a l c h a n g e to th e f ie ld o f s e r ia l n u mb e r the drawing will occur. O t h e r : A r e c o r d o f s p e c ia l te s ts o r c ir c u ms ta n c e s th a t mig h t n o t b e r e q u ir e d o f a ll p a r ts . 9 . D E S C R I P T I O N : D e s c r ip tio n o f th e c h a n g e to b e ma d e s h a ll b e s h o w n u s in g t h e w o r d s “ W a s ” a n d “ N o w ” o r “ R e mo v e ” a n d “ A d d . ” T h e w o r d s “ D e l e t e , ” “ C a n c e l l e d ” o r “ S u p e r s e d e d ” ma y a l s o b e u s e d . I n th e s itu a tio n o f s u p e r s e d in g a p r e v io u s E O , a “ W a s ” a n d “ N o w ” c u r r e n t c o n d itio n mu s t a ls o b e s h o w n , j u s t a s if th e p r e v io u s E O h a d b e e n in c o r p o r a te d . I f t h e c u r r e n t E O f o r ma t i s i n s u f f i c i e nt i n s i z e , a s h e e t 2 o r mo r e ma y b e a d d e d ( s e e F ig u r e 3 0 b ) . I f a la r g e r p a g e is r e q u ir e d a s u p p le me n ta l s h e e t s h a ll b e p r e p a r e d o n a r e g u la r d r a w in g - s iz e s h e e t r e p r o d u c ib le v e llu m a n d s h a ll o f E O n u mb e r o f d r a w in g s ta te “ T h is s u p p le me n ta l s h e e t is p a g e . ” E n te r in th e d e s c r ip tio n a r e a o f p a g e 1 o f th e E O to “ s e e n u mb e r of this EO.” s u p p le me n ta l s h e e t p a g e T h e E O mu s t b e o n a n a p p r o v e d E O f o r m. N o p a s te o n s o r lin e s tr ik e o u ts a r e p e r mi t t e d . A l l l e t t e r i n g mu s t b e . 1 2 i n c h o r l a r g e r a n d u n if o r m i n s i z e . OF ” : I n d ic a te n u mb e r 1 a n d th e to ta l n u mb e r o f E O s h e e ts . 10. “SHEET O n r e ma in in g s h e e ts , e n te r th e n u mb e r o f th a t p a r tic u la r s h e e t o f th e E O o n ly. 1 1 . D i s p o s i t i o n : A c tio n s to b e ta k e n a s a r e s u lt o f th e c h a n g e . 1 2 . E F F E CT I V E : I f th e c h a n g e a f f e c ts o n ly a limite d n u mb e r o f a s e r ie s o f lik e p a r t s , f i l l i n t h e s e r i a l n u mb e r ( s ) a n d d a t e . i F T H E C H A N G E 1 3 . D R A W N B Y : S ig n a tu r e , d a te , a n d G S F C CO D E . 1 4 . I S S U E D BY : S ig n a tu r e , d a te , a n d G S F C c o d e o f CM o f f ic ia l. 1 5 . CH E CK E D : S ig n a tu r e s , d a te , a n d G S F C c o d e s . W h e n p r a c tic a b le , s ig n a tu r e s s h o u ld b e th o s e o f p e r s o n s w h o a p p r o v e d th e o r ig in a l d r a w in g . 16. APPROVED: sIGNATURE, DATE, AND Signature, date, and GSFC CODE. 1 7 . E N G I N E E R : S ig n a tu r e , d a te , a n d G S F C CO D E o f p r o j e c t r e s p o n s ib le e n g in e e r . 1 8 . C C B A P P R O V A L : Co n f ig u r a tio n c o n tr o l b o a r d s ig n a tu r e . 1 9 . J O B O R D E R N O : F a b r ic a tio n n u mb e r to b e a s s ig n e d b y th e c o g n iz a n t e n g in e e r . c o d e 2 0 . E O N O : T o b e a s s ig n e d b y th e c o n f ig u r a tio n ma n a g e me n t o f f ic e o r th e designated representative for the program for which the EO is being written. E O n u mb e r s a r e i s s u e d i n n u me r i c a l s e q u e n c e a g a in s t a p a r tic u la r d r a w in g n u mb e r w h e n th e E O is s e n t f o r c h e c k in g .
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Figure 30a: Engineering Order (sheet 1) ENGINEERING ORDER GODDARD SPACE FLIGHT CENTER GREENBELT,MARYLAND
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Figure 30b: Engineering Order (sheet 2)
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7.
DRAWING REVISIONS
7.1.
Revision Methods Re v is io n s in th e f ie ld o f d r a w in g s a r e ma d e b y d e le tio n , e ith e r b y e r a s u r e o r crossing out (a series of parallel lines placed on the face of drawing over the d e le te d p o r tio n s o f d r a w in g ) , b y a d d itio n , o r b y r e d r a w in g ( a ll d e lin e a tio n s s h a ll b e ma d e t o s c a l e ) .
7.2.
Revision Identification Re v is io n s s h a ll b e id e n tif ie d b y s ymb o ls in th e f ie ld o f th e d r a w in g ( s e e p a r a g r a p h 7 . 4 ) c r o s s - r e f e r e n c e d to th e r e v is io n d e s c r ip tio n . Re v is io n s ymb o ls s h a ll b e e n te r e d in th e r e v is io n b lo c k ( s e e F ig u r e s 3 1 a , 3 1 b , a n d 3 1 c , p a g e 6 9 ) . Re v is io n s s h a ll b e b y a lp h a b e tic a l le tte r a n d o r d e r , e x c e p t th a t le tte r s I , O , Q , S , X , a n d Z s h a ll n o t b e u s e d a s r e v is io n s ymb o ls . F o llo w in g le tte r Y , u s e A A , A B, etc.; after AY, use BA, BB, etc.
7.3.
Revision of Multisheet Drawings T h e r e i s o n l y o n e a c c e p t a b l e me t h o d o f r e c o r d i n g c h a n g e s t o mu l t i s h e e t d r a w i n g s . Re v is io n s to a n y s h e e t( s ) s h a ll b e r e c o r d e d in th e r e v is io n d e s c r ip tio n b lo c k o n s h e e t 1 , a n d r e f e r e n c e s h a ll b e ma d e to s h e e t ( s ) a f f e c t e d . L e v e l o f r e v i s i o n s h a l l be changed on each drawing sheet whether or not that particular sheet is affected. T h e r e v is io n d e s c r ip tio n b lo c k o n a ll s h e e ts o th e r th a n s h e e t 1 s h a ll s ta te “ S e e s h e e t 1 f o r r e v is io n s . ”
7.4.
Revision Recording A s y mb o l ( e . g . , “ A 3 ” ) e n c l o s e d i n a c i r c l e s h a l l a p p e a r i n t h e f i e l d o f d r a w i n g a t th e p o in t o f r e v is io n . T h e le tte r “ A ” r e f e r s to a n y r e v is io n s c o mp le te d a t a g iv e n time . T h e n u mb e r f o llo w in g r e f e r s to th e n u mb e r o f th e r e v is io n ma d e . F ig u r e 3 1 a s h o w s e x a mp le s o f th is . T h e s a me s ymb o l ma y a p p e a r mo r e th a n o n c e i f , i n t h e r e v i s i o n d e s c r i p t i o n c o l u mn , mo r e t h a n o n e a c t i o n t o o k p l a c e p e r l i n e ( s e e F ig u r e 3 1 a u n d e r s ymb o l “ A 3 , ” lin e 2 ) . W h e n c h a n g e s a r e ma d e to a d r a w in g th r o u g h a d ir e c t in c o r p o r a tio n , r e v is io n s ymb o ls a r e r e q u ir e d o n th e f ie ld o f th e d r a w in g , a n d a b b r e v ia te d d e s c r ip tio n s o f th e c h a n g e s mu s t b e r e c o r d e d in th e r e v is io n b lo c k . W h e n c h a n g e s a r e ma d e to a d r a w in g th r o u g h a n E O o r Re v is io n N o tic e s ys te m, r e v is io n s ymb o ls a r e n o t r e q u ir e d o n th e f ie ld o f th e d r a w in g , b u t th e Re v is io n for changes” or “See Revision Notice Blo c k mu s t s ta te “ S e e E O n u mb e r ” in th e r e v is io n d e s c r ip tio n c o lu mn . n u mb e r F o r e ith e r me th o d o f in c o r p o r a tio n , th e p e r s o n in c o r p o r a tin g th e r e v is io n , th e p e r s o n a s s ig n e d to c h e c k th e in c o r p o r a tio n , a n d th e c o g n iz a n t e n g in e e r r e s p o n s i b l e f o r t h e r e v i s i o n a l l s h a l l d at e a n d i n i t i a l t h e r e v i s i o n b l o c k i n t h e a p p r o v e d c o lu mn .
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REVISION SYM A3
B4
DESCRIPTION (1) (2) (3) (1) (3)
R.188 WAS R.250 ADDED .500, 1.500 AND 2.000 DIMS REM'D .750 AND 7.000 DIMS WAS 1.500; (2) WAS .635; WAS 1.000+.005; (4) WAS "NOTE 4" -.000
DATE
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(SIGNATURE)
2-3-84
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Note: Z o n e c o lu mn n o t r e q u ir e d o n C- s iz e d r a w in g s a n d s ma lle r . Figure 31a: Sample Revision Block
REVISION SYM C
DESCRIPTION (1) REPLACES REV-B WITH CHANGE, SEE EO NUMBER XXX
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Note: I f n o “ E O ” s ys te m is u s e d , th e c h a n g e s w o u ld b e s p e lle d o u t, s imila r to F ig u r e 3 1 a . Figure 31b: Sample Revision Block
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DATE
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Note: T h e o l d d r a w i n g s h a l l h a v e t h e s t a t e me n t “ R E D R A W N W I T H O U T C H A N G E ” a d d e d to its r e v is io n b lo c k , r e q u ir in g n o c h a n g e le tte r , a n d “ S U P E RS E D E D ” added above its Title block. Figure 31c: Sample Revision Block
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Redrawn or Replaced Drawings T h e n e x t r e v is io n le tte r in s e q u e n c e s h a ll b e e n te r e d in th e r e v is io n b lo c k o f th e n e w d r a w i n g . T o t h e r e v i s i o n b l o c k s h a l l b e a d d ed “ R e p l a c e s R e v i s i o n ( o l d r e v is io n le tte r ) W ith Ch a n g e ” a n d a d e s c r ip tio n o f th e c h a n g e o r r e f e r e n c e to a n E n g in e e r in g O r d e r ( E O ) d o c u me n t n u mb e r s ha l l b e r e c o r d e d i n t h e d e s c r i p t i o n c o l u mn . A l l p r e v i o u s r e v is i o n s s h a l l b e o mi t t e d f r o m t h e s u p e r s e d i n g d r a w i n g . T h e s t a t e me n t “ R e p l a c e d W i t h C h a n g e B y R e v i s i o n ( n e w r e v i s i o n l e t t e r ) ” s h a l l b e a d d e d to th e s u p e r s e d e d d r a w in g 's r ev is io n b lo c k a n d “ S u p e r s e d e d ” s h a ll b e p l a c e d i n 1 / 4 - i n c h - h i g h l e t t er i n g d i r e c t l y a b o v e t h e T i t l e b l o c k . W h e n a d r a w i n g i s r e d r a w n w i t h o u t c h a n g e s , t h e p h r a s e “ R e p l a c e s R e v i s i o n ( ol d r e v i s i o n l e t t e r ) W ith o u t Ch a n g e ” s h a ll b e a d d e d to r e v is io n b lo c k a n d r e v is io n le tte r s h a ll r e ma in u n c h a n g e d . S e e F i g u r e 3 1 c . O r i g i n a l n a me s a n d d a t e s f r o m t h e o ld t i t l e b lo c k s h a l l b e t y p e d i n o n t h e r e p l a c e me n t d r a w i n g .
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PARTS LIST AND INDEX LIST T h is s e c tio n e s ta b lis h e s min imu m r e q u ir e me n ts f o r th e p r e p a r a tio n a n d s u b mis s io n o f P a r ts L is ts ( P L ) a n d I n d e x L is ts ( I L ) u s e d w ith e n g in e e r in g d r a w in g s . P a r t s L i s t s ma y b e p r e p a r e d f o r e a c h as s e mb l y d r a w i n g i n a c c o r d a n c e w i t h t h i s s e c tio n . F o r p a r ts lis ts o n d r a w in g s , s e e F ig u r e 3 4 o n p a g e 8 0 o r F ig u r e 3 o n page 10. I n d e x L i s t s ma y b e p r e p a r e d f o r e a c h P a y l o a d , E n g i n e e r i n g M o d e l , M a j o r A s s e mb ly, Co mp le x A s s e mb ly o f a s s e mb lie s , a s d ir e c te d b y P r o j e c t Ma n a g e r .
8.1.
Definitions Cover Sheet: This refers to the first sheet of each Parts List or Index List and is a record of the revisions. P a r t s L i s t ( P L ) : T h i s i s a t a b u la t i o n o f t h e i t e ms n e c e s s a r y f o r f a b r i c a t i n g o r a s s e mb l i n g t h e e n d i t e m( s ) t o w h i c h t h e l i s t a p p l i e s . I n d e x L i s t ( I L ) : T h is is a lis t o f th e o n e p r in c ip a l a n d a ll s u b o r d in a te P L s a p p l i c a b l e t o a ma j o r a s s e mb l y . B u l k M a t e r i a l s : T h e s e a r e i t e ms t h a t a r e n e c e s s a r y c o n s t i t u e n t s o f a n a s s e mb l y o r s u b a s s e mb l y , f o r w h i c h t h e q u a n t i t y r e q u ir e d i s n o t r e a d i l y p r e d e t e r min a b le . E x a mp le s a r e o il, w a x , s o ld e r , c e me n t, in k , d a mp in g f lu id , g r e a s e , p o w d e r e d graphite, flux, welding rod, thread, twine, and chain. If the quantity is known, b u t t h e p h ys i c a l n a t u r e o f t h e ma t e r i a l i s s u c h t h a t i t i s n o t a d a p t a b le t o d e p ic t i o n o n a d r a w in g , o r th e ma te r ia l c a n b e c u t to f in is h e d s iz e b y th e u s e o f s u c h h a n d o r b e n c h to o ls a s s h e a r s , p lie r s , k n iv e s , e tc . w ith o u t f u r th e r ma c h in in g o p e r a tio n s , th e n th e ma te r ia l's c o n f ig u r a tio n s h a ll b e f u lly d e s c r ib e d in w r itin g w ith o u t th e n e c e s s ity o f p ic to r ia l p r e s e n ta tio n . S p e c i a l H a n d l i n g E q u i p m e n t a n d P a c k a g i n g : T h i s t e r m a p p l i e s t o i t e ms s u c h a s b o x e s , s h ip p in g c o n ta in e r s , c r a d le s , c r a n e a tta c h me n ts , a n d o th e r s p e c ia l ite ms n e e d e d f o r s to r in g a n d tr a n s p o r tin g . S p e c i a l T e s t E q u i p m e n t : T h i s t e r m a p p l i e s t o i t e ms o f s p e c i a l t e s t e q u ip me n t th a t a r e r e q u ir e d f o r g o v e r n me n t in s p e c tio n o r s e r v ic e ma in te n a n c e , s u c h a s te s t s ta n d s , in d ic a to r s , e tc . A p p l i c a b l e S t a n d a r d s , S p e c i f ic a t i o n s , a n d P u b l i c a t i o n s : T h i s t e r m a p p l i e s t o d o c u me n ts r e f e r e n c e d o n o r in v o k e d b y th e d r a w in g s .
8.2.
Requirements 8.2.1.
List Preparation T h e P L a n d I L ma y b e p r e p a r e d ma n u a lly o r b y typ e w r ite r o r c o mp u te r w o r d p r o c e s s o r .
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8.2.2.
List Formats L is ts s h a ll u s e p r e p r in te d 8 1 /2 - b y 1 1 - in c h s iz e f o r ma t. T h e p r e p a r a tio n r e q u ir e me n ts a r e p r o v id e d h e r e in . W h e n mo r e t h a n a s i n g l e s h e e t i s r e q u ir e d to p r e p a r e o r r e v is e a l i s t , t h e l i s t t i t l e i s r e q u ir e d o n t h e f i r s t s h e e t o n ly . The design activity shall use a cover sheet as illustrated in F ig u r e 3 2 a o n p a g e 7 4 . E n tr ie s o n th e c o v e r s h e e t s h a ll b e c o mp le te d a s e x p la in e d in “ Co v e r S h e e t, ” s e c tio n 8 . 3 , b e lo w .
8.2.3.
Revision Identification A revision letter and the date of revision shall be applied to each l i s t w h e n a n y c h a n g e i s ma d e . T h e l e t t e r s I , O , Q , a n d X s h a l l n o t b e u s e d a s r e v is io n le tte r s . L is t s h a ll b e r e v is e d in d e p e n d e n tly o f the associated drawings.
8.2.4.
Deleting Items I t e ms t o b e d e l e t e d ma y b e e i t h e r l i n e d o u t, e r a s e d , o r o mi t t e d .
8.2.5.
Adding Items N e w o r s u p e r s e d in g ite ms ma y b e a d d e d a t th e e n d o f a lis t o r inserted in the list in proper sequence.
8.3.
Cover Sheet The Cover Sheet shall be the first sheet for each PL or IL and shall be prepared as indicated herein.
8.3.1.
Format T h e Co v e r S h e e t s h a ll b e p r e p a r e d o n F o r m 6 7 0 - 3 6 ( 1 /6 5 ) . Re f e r to F ig u r e 3 2 a o n p a g e 7 4 .
8.3.2.
Entries E n tr ie s s h a ll b e ma d e in th e b lo c k s a n d c o lu mn s o f th e Co v e r S h e e t a s d ir e c te d o n th e f o llo w in g p a g e : 1 . C O D E I D E N T : E n te r Co d e I d e n tif ic a tio n n u mb e r a s a s s ig n e d b y F e d e r a l S u p p ly CA G E P u b lic a tio n H 4 /H 8 f o r u s in g a c tiv ity. N u mb e r i s l o c a t e d i n t i t l e b lo c k o f d e s i g n a c t i v i t y . 2 . L I S T N O . : E n te r th e n u mb e r o f th e P L o r I L f o r w h ic h th e c o v e r sheet is being prepared. 3. SHEET
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4 . RE V : E n t e r r e v is i o n l e t t e r o f t h e l a t e s t r e v is i o n t o t h e P L . Ch a n g e s to th is b lo c k s h a ll b e ma d e b y e r a s u r e . 5 . I T E M N O ME N C L A T U R E : E n t e r t h e s a me n o me n c l a t u r e t h a t a p p e a r s i n t h e T i t l e b lo c k o f t h e a s s e mb l y f o r w h i c h t h e l i s t i s b e in g p r e p a r e d . T h e ite m n o me n c la tu r e s h a ll a lw a ys b e a n o u n . 6 . V E N D O R: I f p r e p a r e d b y c o n t r a c t o r f o r G S F C , e n t e r c o n t r a c t o r n a me a n d F e d e r a l S u p p ly CA G E Co d e N u mb e r s . 7 . P R E P A R E D : E n te r n a me o f p e r s o n p r e p a r in g lis t. 8 . A P P R O V E D : E n t e r s i g n a t u r e o f p er s o n a p p r o v i n g f o r a c c u r a c y a n d c o mp le te n e s s . 9 . E N G A P P R O V A L : E n te r s ig n a tu r e o f A s s is ta n t P r o j e c t E n g in e e r ( o p tio n a l) . 1 0 . E N G A P P R O V A L : E n te r s ig n a tu r e o f P r o j e c t E n g in e e r ( ma n d a to r y f o r a ll p r o c u r e me n t) . 1 1 . A U T H E N T I C A T I O N : E n te r n a me o f p e r s o n d e s ig n a te d to s ig n f o r d e s ig n a c tiv ity o r d iv is io n . 12. CONTRACT NO: When prepared by contractor for GSFC, enter th e c o n tr a c t n u mb e r . 1 3 . L T R : E n te r r e v is io n le tte r o f c u r r e n t r e v is io n . 1 4 . D E S CRI P T I O N : E n te r a c o mp le te a n d c o n c is e d e s c r ip tio n o f th e r e v is i o n t h a t a p p l i e s t o t h e P L . 1 5 . D A T E : E n te r d a te o f r e v is io n . 1 6 . A P P ( A p p r o v a l) : E n t e r i n i t i a l s o f p e r s o n c o mp l e t i n g r e v is i o n review. 1 7 . R E C O R D O F R E V I S I O N : E n te r r e v is io n s ta tu s o f in d iv id u a l P L sheets.
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Figure 32a: Parts List (and Index List) Cover Sheet
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75
Parts List Continuation Sheet T h e P L c o n tin u a tio n s h e e t s h a ll b e p r e p a r e d a s in d ic a te d h e r e in . Cir c le d n u mb e r s h a v e b e e n a s s i g n e d t o e a c h c o l u mn o r b l o ck f o r i d e n t i f i c a t i o n o n l y . T h e P L s h a l l c o n ta in a c o v e r s h e e t a n d a s ma n y P L c o n tin u a tio n s h e e ts a s n e c e s s a r y to c o mp l e t e l y l i s t a l l t h e i n f o r ma t i o n .
8.4.1.
Format T h e P L c o n tin u a tio n s h e e t s h a ll b e p r e p a r e d o n F o r m 6 7 0 - 3 7 ( 1 /6 5 ) . Re f e r to F ig u r e 3 2 b o n p a g e 7 6
8.4.2.
Entries E n tr ie s s h a ll b e ma d e in th e b lo c k s a n d c o lu mn s a s d ir e c te d b e lo w : 1 . P A R T S L I S T N O . : O n e a c h s h e e t o f t h e P L , e n t e r t h e n u mb e r o f th e c o r r e s p o n d in g d r a w in g . 2 . S H E E T N O . : O n e a c h s h e e t , e n t e r t h e a p p r o p r i a t e s h e e t n u mb e r . 3 . I T E M F I N D N O S . : E n te r n u mb e r ta k e n f r o m a s s e mb ly d r a w in g . 4 . D W G . D O C U ME N T P A R T O R S T O C K N O . : E n t e r t h e p a r t n u mb e r o r o t h e r i d e n t i f y i n g n u mb e r o f e a c h i t e m i n t h e l i s t . 5. QTY REQD PER ASSY.: Enter the quantity required for each a s s e mb l y . 6 . CO D E I D E N T N O . ( Co d e id e n tif ic a tio n n u mb e r ) : E n t e r a p p r o p r ia te n u mb e r a s s ig n e d to th e d e s ig n a c tiv ity p e r CA G E P u b lic a tio n H 4 /H 8 . W h e n a g o v e r n me n t o r in d u s tr y s ta n d a r d p a r t o r s p e c if ic a tio n n u mb e r a p p e a r s in Co lu mn 4 , n o e n tr y s h a l l b e ma d e i n C o l u mn 6 . W h e n t h e C o d e I d e n t i f i c a t i o n N u mb e r f o r a n i t e m i s i d e n t i c a l t o t h a t e n t e r e d i n B l o c k 1 o f t h e Co v e r S h e e t, d o n o t r e p e a t th e n u mb e r in Co lu mn 6 o f th e P L c o n tin u a tio n s h e e t. 7 . D R A W I N G T I T L E O R I T E M D ES C R I P T I O N ( I t e m d e s c r i p t i o n o r n o me n c l a t u r e ) : E n te r th e n o u n o r n o u n p h r a s e d e s c r ib in g th e ite m w h o s e p a r t o r id e n tif yin g n u mb e r a p p e a r s o n a s s e mb ly d r a w in g . 8 . R E M A R K S : E n t e r i n f o r ma t i o n t h a t c o u ld b e u s e f u l f o r r e f e r e n c e [ i. e . , s p e c if ic a tio n , c o n tr o l d r a w in g s , d e s ig n a tio n s ( e . g . , R1 0 , J 1 4 , e tc . ) , v e n d o r 's ite ms , e tc . ].
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Figure 32b: Parts List Continuation Sheet
S u p p le me n ta r y H e a d in g L is t. I n a d d i t i o n t o t h e h e a d i n g s t h a t a r e u s e d f o r th e ite ms o f th e P L , a s u p p le me n ta r y h e a d in g lis t a s s ta te d below shall be used if applicable: - Bulk Material. - S p e c ia l H a n d lin g E q u ip me n t a n d P a c k a g in g . - S p e c i a l T e s t E q u i p me n t .
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- A p p lic a b le S ta n d a r d s , S p e c if ic a tio n s , a n d P u b lic a tio n s .
8.5.
Index List Continuation Sheet T h e I L c o n tin u a tio n s h e e t s h a ll b e p r e p a r e d a s in d ic a te d h e r e in . Cir c le d n u mb e r s h a v e b e e n a s s i g n e d t o e a c h c o l u mn o r b l o ck f o r i d e n t i f i c a t i o n o n l y . T h e I L s h a l l c o n ta in a c o v e r s h e e t a n d a s ma n y I L c o n tin u a tio n s h e e ts a s n e c e s s a r y to c o mp l e t e l y l i s t a l l t h e i n f o r ma t i o n .
8.5.1.
Format T h e I L c o n tin u a tio n s h e e t s h a ll b e p r e p a r e d o n F o r m 6 7 0 - 3 9 ( 1 /6 5 ) . Re f e r to F ig u r e 3 3 o n p a g e 7 8 .
8.5.2.
Entries E n tr ie s s h a ll b e ma d e in th e b lo c k s a n d c o lu mn s a s d ir e c te d b e lo w : 1 . I N D E X L I S T N U MB E R: O n e a c h s h e e t , e n t e r t h e n u mb e r o f f i r s t a s s e mb l y l e v e l ( t o p o r ma i n a s s e mb l y ) . 2 . S H E E T N O . : O n e a c h s h e e t , e n t e r t h e a p p r o p r i a t e s h e e t n u mb e r . 3. CODE IDENT.: Enter code identification taken from PL. 4 . L I S T N O . : E n te r n u mb e r o f th e P L . 5 . L I S T N O ME N C L A T U R E : E n t e r n o me n c l a t u r e a s i t a p p e a r s o n the PL. 6 . A S S Y L E V E L : E n t e r t h e n e x t a s s e mb l y l e v e l n u mb e r o f t h e l i s t n u mb e r .
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Figure 33: Index List Continuation Sheet
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79
Find or Item Number System of Identification 8.6.1.
Definition A f in d n u mb e r o r ite m n u mb e r is a n u mb e r a s s ig n e d to a p a r t o r s u b a s s e mb ly f o r th e p u r p o s e o f lo c a tin g th e p a r t o r s u b a s s e mb ly in th e f ie ld o f th e a s s e mb ly d r a w in g . T h e f in d o r ite m n u mb e r is a ls o s h o w n i n t h e P a r t s L i s t f o r a n a s s e mb l y d r a w i n g , w h e t h e r t h e l i s t i s s e p a r a te o r a n in te g r a l p a r t o f th e d r a w in g . T h e “ f in d n u mb e r ” is u s u a lly a s s o c ia te d w ith a s e p a r a te P a r ts L is t, a n d th e “ ite m n u mb e r ” is u s u a lly a s s o c ia te d w ith th e L is t o f Ma te r ia l o n d r a w in g s , b u t b o th a r e u s e d f o r lo c a tin g p a r ts . P a r ts a n d s u b a s s e mb lie s a r e id e n tif ie d b y o th e r n u mb e r s f o r p u r p o s e s o f p r o c u r e me n t a n d ma r k in g . T h e s e id e n tif yin g n u mb e r s a r e c r o s s - r e f e r e n c e d t o t h e f in d o r ite m n u mb e r s in th e P L o r in a ta b u la tio n o n th e a s s e mb ly d r a w in g .
8.6.2.
Application and Limitation T h e f in d o r ite m n u mb e r s ys te m p r o v id e s a q u ic k me a n s o f lo c a tin g p a r ts o n a r e la tiv e ly s ma ll a r e a o f a d r a w in g h a v in g a h ig h d e n s ity o f p a r ts . I t is p r e f e r r e d th a t th e c o n v e n tio n a l me th o d o f id e n tif ic a tio n ( ite m n u mb e r s ) b e u s e d o n d r a w in g s o f s imp le a s s e mb lie s , e v e n th o u g h f in d a n d p a r t n u mb e r s a r e u s e d f o r c o mp le x a s s e mb lie s th a t a r e c o mp o n e n ts o f th e s a me e q u ip me n t. S e e F ig u r e 3 4 o n p a g e 8 0 . F o r a s a mp le d r a w in g o f a n a s s e mb ly u s in g th e f in d a n d p a r t n u mb e r s ys te m, s e e F ig u r e 1 7 o n p a g e 4 0 . T h e i t e m n u mb e r s y s t e m o f i d e n t i f i c a t i o n s h a l l a l s o b e u s e d t o l o c a t e p i e c e s o n d r a w i n g s o f i n s e p ar a b l e a s s e mb l i e s w h e n ma t e r i a l s p e c if ic a tio n s o r ma te r ia l te mp e r s d if f e r f r o m o n e a n o th e r .
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REVISION DESCRIPTION
SYM
DATE
APPROVAL
12 EXPERIMENT INTERFACE
A
8 11
14
7
FOLD
3
LINE
6
10
4
4 13
13
3
A
3 2
2
14
4
MS20500-428
NUT, 1/4-2B UNF-3B
CRES
13
4
MS20500-1214
NUT, 3/4-16 UNF-3B
CRES
12
1
MS20500-1018
NUT, 5/8-18 UNF-3B
CRES
11
2
MS35308-314
SCREW, CAP, HEXAGON HD
CRES
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1
GC1416639-1
SHIM
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1
GC1416635-1
SPACER
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GC1416636
SLEEVE
7
1
GC1416637
SEAT, UPPER
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GC1416638
SEAT, LOWER
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GD1416679
STEM, MOUNT C
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GC1416681
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GC1416640
BEARING
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GC1416680
SEAT, MOUNT C
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GD1416678
BASE, MOUNT C
GD1416697
MOUNT C, ASSEMBLY
1
X REQD
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REQD
SHAFT, BEARING
GC
5
DESCRIPTION
PART NO.
NO.
SECTION
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MATERIAL SPEC& NO.
LIST OF MATERIAL
UNLESS OTHERWISE SPECIFIED-DIMENSIONS ARE IN INCHES
A-A
REV
9
NATIONAL AERONAUTICS AND
TOLERANCES: .XX
±.02
Goddard Space Flight Center
SPACE ADMINISTRATION
.XXX
±.005
FRACTIONS
±1°
125
NAME
±1/16
INIT
GREENBELT, MARYLAND
DATE DRAWINGINTERPRETED PER GSFC-X673-64-1
DESIGNER REMOVE ALL BURRS AND SHARP EDGES R .010 OR CHAMFERMAX.
FLIGHT HARDWARE/POST FAB HARDNESS TEST REQ'D HARDNESS TEST NOT REQUIRED
DRAWN
TITLE
NON FLIGHT
TEST HARDNESS PER ASTM E-18, LOCATION OPTIONAL
CHECKED
TEST HARDNESS PER ASTM E-18 WHERE INDICATED APPROVED
ON FIELD OF DRAWING THUS NO NON-DESTRUCTIVE EXAMINATION (NDE) REQ'D
APPROVED
NDE REQUIRED PER S-313-009 CODE THIS DRAWINGWAS PRODUCEDUSING
REV
APPROVED-STRESS SOFTWARE:
GC
VERSION: APPROVED-ENGINEER NEXT ASSY
USED ON
CODE
SCALE
WT
SH
LINE
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FILE NAME:
Figure 34: Sample Assembly Drawing With List of Material
8.6.3.
Drawing Requirements W h e n u s e d in th e f ie ld o f th e d r a w in g , ite m n u mb e r s s h a ll b e e n c lo s e d in c ir c u la r - s h a p e d 1 /2 - in c h - d ia me te r b a llo o n s . F o r d r a w i n g s o f e l e c t r o n ic c h a s s i s a s s e mb l i e s , i f t h e o u t l i n e s o f r e s is to r s o r c a p a c ito r s a r e s h o w n , th e r e f e r e n c e d e s ig n a tio n s s h a ll be placed within those outlines when practical. The corresponding f i n d n u mb e r s s h a l l b e o mi t t e d f r o m t h e v ie w s . I n s u c h c a s e s , a ta b le s h a ll b e p r o v id e d o n th e d r a w in g to s h o w th e f in d n u mb e r a s s i g n e d t o e a c h i t e m t h a t i s i d e nt i f i e d b y a r e f e r e n c e d e s i g n a t i o n o n th e v ie w s . T h e s a me f in d n u mb e r s h a ll b e u s e d f o r a n y g r o u p o f r e f e r e n c e d e s ig n a tio n s a s s ig n e d to ite ms o f id e n tic a l c h a r a c te r is tic s . T h e ite m o r f in d n u mb e r s o n a n y d r a w in g s h a ll b e a s s ig n e d in d e p e n d e n tly o f th o s e o n a n y o th e r d r a w in g . F in d n u mb e r s a s s ig n e d to s u b a s s e mb lie s s h o w n o n a n a s s e mb ly d r a w in g s h a ll b e d is tin g u is h e d f r o m th o s e a s s ig n e d to p a r ts b y a d d in g a le tte r s u f f ix to th e s u b a s s e mb ly f in d n u mb e r .
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8.7.
81
List of Material A L i s t o f M a t e r i a l ( L M ) s h a l l b e p r e pa r e d a n d i n c l u d e d o n e a c h a s s e mb l y d r a w i n g t o p r o v id e t h e i n d iv id u a l p a r t o r s u b a s s e mb l y i t e m n u mb e r , q u a n t i t y r e q u ir e d , p a r t n u mb e r , d e s c r ip tio n , ma te r ia l, a n d ma te r ia l s p e c if ic a tio n . S e e F ig u r e 3 4 o n page 80.
8.7.1.
Format T h e L i s t o f M a t e r i a l s h a l l b e p la c e d a b o v e t h e d r a w i n g T i t l e b l o c k a s s h o w n in F ig u r e 3 4 o n p a g e 8 0 .
8.7.2.
Entries E n tr ie s s h a ll b e ma d e in th e b lo c k s a n d c o lu mn s a s in d ic a te d in F ig u r e 3 o n p a g e 1 0 .
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9.
DOCUMENTATION MANAGEMENT
9.1.
Typical Drawing Flow for Flight Projects Engineer (concept) Designer (layout) Engineer (approval of layout concepts) Designer Documents (detail, subassy., assy., instl., etc.) on CAD or conventional board drawing Engineer (review) Design Analyst (checking/review) Engineer (consideration of suggestions affecting design)
Designer (modifications) Design Analyst (checking approval of CAD/paper or vellum original) Designer (records change & forwards check copy)
Engineer (approval) Configuration Manager 1. Update Master CAD File with Names & Dates 2. Release Prints to Fabrication Parts Completed Parts GSFC QA
No
Changes to Released Drawings
Yes
Advance Shop Copy (optional) Engineer EOs (change notice)
Engineer (acceptance or rejection)
Figure 35: Typical Drawing Flow for Flight Projects
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9.2.
83
Archiving D r a w in g s , E n g in e e r in g O r d e r s ( E O s ) , Ce r tif ic a tio n L o g s , A s s o c ia te d L is ts , a n d Engineering Parts Lists (EPLs) shall be archived after signoff. Following are s o me s a mp le a r c h iv in g me th o d s : a.
F ilin g o f a ll p a p e r o r ig in a ls .
b . S c a n n in g o f th e p a p e r o r ig in a ls to a s ta n d a r d d ig ita l r a s te r ima g e f o r ma t s u c h a s CCI T T G r o u p 4 ( CA L S , MI L - R- 2 8 0 0 2 ) a n d th e n u s in g a d ig ita l s to r a g e s y s t e m t o a r c h i v e t h e r e s u l t i n g d a ta b a s e o f r a s te r ima g e s . c.
Mic r o f ilmin g a n d s to r in g o n a p e r tu r e c a r d s w h e n r e q u e s te d b y a G S F C d iv is i o n t h a t s t i l l h a s e q u ip me n t t o r e t r i e v e t h e i n f o r ma t i o n . Note: B e f o r e d e c i d in g t o a r c h i v e u s i n g a p e r t u r e c a r d s , t h e a v a i l a b i l i t y o f r e t r i e v a l e q u i p me n t a n d t h e q u a l i t y o f r e p r o d u c t io n s h o u l d b e c o n s i d e r e d . T h e q u a l i t y o f d r a w i n g s , l i s t s , a n d d o c u me n t s s h a l l me e t t h e l e g ib i l i t y a n d c o n tr a s t r e q u ir e me n ts o f MI L - D - 5 4 8 0 a n d MI L - M- 9 8 6 8 . T h e mic r o f ilm s u p p lie d s h a ll b e T yp e I , Cla s s 1 .
9.3.
Computer-Aided Design Drawings T h e p u r p o s e o f th is s e c tio n is to s e t p o lic y o n h o w Co mp u te r - A id e d D e s ig n ( CA D ) d r a w in g s a r e to b e h a n d le d w h ile a c tiv e , s u p p lie d , d o c u me n te d , a n d archived.
9.3.1.
Presentation of Computer-Generated Data A c o mp u te r g r a p h ic s o r CA D p r o g r a m i s u s e d t o c r e a t e e l e c t r o n i c d a ta f ile d r a w in g s . A p a p e r o r ig in a l is p r o d u c e d o n w h ic h d r a w in g s i g n a t u r e r e q u i r e me n t s a r e p l a c e d . T h e e l e c t r o n i c d a t a f i l e mu s t b e u p d a t e d t o i n c l u d e n a me s , i n i t i a l s , a n d d a t e s . T h e p a p e r o r i g i n a l i s n o w th e a c tiv e o r ig in a l a n d is f ile d w ith th e c o n f ig u r a tio n ma n a g e r ( CM) , a lo n g w ith th e e le c tr o n ic d a ta f ile w h ic h mu s t b e u s e d f o r future changes. W h e n a r e v is io n is n e e d e d , a n E n g in e e r in g O r d e r ( E O ) p a p e r o r i g i n a l i s w r i t t e n a n d s u b mi t t e d t o t h e C M f o r d is t r i b u t i o n a n d f i l i n g . A f t e r n o mo r e t h a n f i v e o u ts t a n d in g E O s a r e w r i t t e n , a n e w e le c tr o n ic CA D d r a w in g s h o u ld b e p r o d u c e d b y th e o r ig in a tin g G S F C g r o u p o r c o n tr a c to r . T h e c h a n g e s s h a ll b e r e c o r d e d in th e r e v is i o n b lo c k , d a t e d , a n d i n i t i a l e d . A n e w p a p e r o r i g i n a l w i t h t h e changes incorporated, dated, and initialed, shall replace the previous original in the CM file. The new original shall be so s ta mp e d , d a te d , a n d s ig n e d b y th e CM r e p r e s e n ta tiv e .
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C A D d a t a f i l e s a r e t o b e s t o r e d o n me d i a t h a t a r e c o mp a t i b l e w i t h c u r r e n t l y u s e d G S F C s y s t e ms . T h e s e me d ia i n c l u d e mu l t i t r a c k r e e l s o f c o mp u te r ta p e o r f le x ib le d is k s ( 3 - 1 /2 ” o r 5 - 1 /4 ” d o u b le s id e , h ig h d e n s ity) . E a c h s to r a g e me d iu m ma y c o n ta in o n e o r mo r e f ile s . T h e f o l l o w i n g s h a l l a c c o mp a n y e a c h s t o r a g e r e q u e s t : a.
A c o mp u t e r - g e n e r a t e d l i s t o f i n f o r ma t i o n c o n t a i n e d o n e a c h p i e c e o f s t o r a g e me d i u m ( f o r e x a mp l e : n u mb e r , d r a w i n g s i z e , etc.).
b . T h e b r a n d n a me o f t h e c o mp u t e r a n d s o f t w a r e u s e d t o c r e a t e t h e f ile s , a n d th e s o f tw a r e v e r s io n n u mb e r if p r a c tic a l. G S F C r e q u ir e s th a t CA D d a ta b e c o n v e r te d to a s ta n d a r d f o r ma t, s u c h a s t h e D r a w i n g I n t e r c h a n g e F i l e ( D X F ) o r I n i t i a l G r a p h ic s Exchange Specification (IGES). Refer to the National Institute for S ta n d a r d s a n d T e c h n o lo g y f o r th e la te s t v e r s io n o f I G E S . T h is typ e o f f o r ma t a llo w s th e CA D d a ta to b e r e a d b y d if f e r e n t typ e s o f CA D s y s t e ms . F o r a t e c h n i c a l o v e r v i ew o f I G E S , r e f e r t o t h e N a t i o n a l Bu r e a u o f S ta n d a r d s p u b lic a tio n , N BS I R8 1 - 2 2 9 , A T e c h n i c a l B r i e f i n g o n t h e I n i t i a l G r a p h i c s E x c h a n g e.
9.3.2.
Developing and Using Computer-Generated Drawings A ll q u e s tio n s r e g a r d in g th e la te s t in f o r ma tio n s ys te ms a n d a p p lic a tio n s s h o u ld b e d ir e c te d to th e Co mp u te r - A id e d D e s ig n S e c t i o n o f t h e M e c h a n i c a l En g in e e r in g Br a n c h . D r a w in g s g e n e r a te d b y c o mp u te r mu s t b e to s c a le p e r s e c tio n 3 . 4 o n p a g e 3 2 o f t h i s ma n u a l .
9.3.3.
Specification Data T h e A me r i c a n N a t i o n a l S t a n d ar d s I n s t i t u t e p u b l i c a t i o n , D i g i t a l Representation for Communication of Product Definition Data ( A N S I Y 1 4 . 2 6 M- 1 9 8 7 a n d u p d a te s ) , s h o u ld b e c o n s u lte d to e s ta b lis h a s ta n d a r d d a ta c o mmu n ic a tio n s f o r ma t.
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10.
DESIGN REFERENCES, STANDARDS, AND SPECIFICATIONS
10.1.
Dimensioning and Tolerancing 10.1.1.
85
Dimensioning and Tolerancing Practices T h e d ime n s io n in g a n d to le r a n c in g f o r a ll typ e s o f d r a w in g s s h a ll b e in accordance with ANSI Y14.5M-1982 (or later revisions). Copies are available from A me r i c a n N a t i o n a l S t a n d a r d s I n s t i t u t e 1 4 3 0 Br o a d w a y New York, NY 10018 A me r i c a n S o c i e t y o f M e c h a n i c a l E n g i n e e r s 3 4 5 E . 4 7 th S tr e e t New York, NY 10017
10.1.2.
Statements on Dimensioning a.
D i me n s i o n s s h a l l b e c h o s e n a n d p l a c e d o n d r a w i n g s b a s e d o n th e p a r ts in te r r e la tio n s h ip s w ith ma tin g p a r ts , n o t to i n s i g n if i c a n t t h e o r e t i c a l c e n t e r l i n e s .
b . P r ima r y, s e c o n d a r y, a n d te r tia r y d a tu m f e a tu r e s s h a ll b e la b e le d in a lp h a b e tic a l o r d e r w h e n c r e a tin g a n e w d r a w in g . c.
D r a w in g s o f p a r ts r e q u ir in g te mp la te s in th e f a b r ic a tio n p r o c e s s a n d th e ir te mp la te d r a w in g s mu s t b e d ime n s io n e d a lik e . Re f e r to to o lin g r e q u ir e d n o te s in “ D ime n s io n N o te s , ” p a r a g r a p h 2 . 4 . 4 . 1 on page 16.
d . U s e a min imu m o f r e f e r e n c e d ime n s io n s o n d r a w in g s . e.
W h e n u s in g tr u e p o s itio n d ime n s io n in g * , th e d ime n s io n f r o m th e f e a tu r e to o th e r e d g e s a n d its p e r p e n d ic u la r ity r e la tio n s h ip t o a s u r f a c e mu s t b e i d e n t i f i e d w i t h d a t u m l e t t e r s . I mp l i e d d a tu ms ( w h e n n o d a tu m le tte r ( s ) a r e s p e c if ie d ) a r e n o lo n g e r acceptable.
* b a s i c , o r t h e o r e t i c a l l y e xa c t d ime n s io n s ; e x a mp le : X.XXX
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10.2.
ENGINEERING DRAWING STANDARDS MANUAL
Metric Dimensioning N MI 8 0 1 0 . 2 A , U s e o f th e M e tr ic S y s te m o f M e a s u r e m e n t in NA S A P r o g r a m s, e s ta b lis h e s p o lic y a n d r e q u ir e me n ts f o r u s e o f th e me tr ic me a s u r e me n t s ys te m ( a ls o k n o w n a s th e I n te r n a tio n a l S ys te m o f U n its , o r S I ) in N A S A p r o g r a ms a n d th e c o n d itio n s u n d e r w h ic h b o th E n g lis h a n d me tr ic me a s u r e me n ts ma y b e u s e d . W h e n me tr ic d ime n s io n in g is to b e u s e d , th e d o c u me n ts A S T M E 3 8 0 - 9 1 a , S ta n d a r d P r a c tic e fo r U s e o f th e I n te r n a tio n a l S y s te m o f U n its (S I ), a n d N A S 1 0 0 0 0 , NA D o c u m e n ts P r e p a r a tio n a n d M a in te n a n c e in S I (M e tr ic ) U n its , g iv e s p e c if ic in f o r ma tio n a n d c o n v e r s io n f a c to r s .
10.2.1.
SI Units and Symbols a.
S I b a s e u n its a r e s e v e n w e ll- d e f in e d u n its th a t a r e r e g a r d e d a s d ime n s io n a lly in d e p e n d e n t. T h e y a r e a s f o llo w s : SI Base Units
Quantity length mass time electric current thermodynamic temperature* luminous intensity amount of substance
Name meter kilogram second ampere kelvin candela mole
Symbol m kg s A K cd mol
S e le c te d L is t o f D e r iv e d U n its Quantity acceleration angular acceleration angular velocity area density, mass electric charge electric potential electrical resistance energy force frequency magnetic flux moment of force power pressure or stress velocity volume
Name or Unit meter per second squared radian per second squared radian per second square meter kilogram per cubic meter coulomb volt ohm joule newton hertz weber newton meter watt pascal meter per second cubic meter
Symbol m/s2 rad/s2 rad/s m2 kg/m3 C V (Omega) J N Hz Wb Nxm W Pa m/s m3
Formula Axs W/A V/A Nxm kg x m/s2 1/s Vxs J/s N/m2 -
*The SI temperature scale is the International Thermodynamic Kelvin Scale, symbol K. Degree Celsius, symbol C, is for general use. The span of one degree Celsius is exactly one Kelvin.
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b . D ime n s io n in g a n d to le r a n c in g s h a ll b e in S I u n its a n d d e c ima l f r a c t i o n s o f t h e u n i t . A l l l i n e a r d ime n s i o n s s h a l l b e i n mi l l i me t e r s a n d d e c i ma l f r a c t i o n s o f mi l l i me t e r s . A l t h o u g h t h e SI unit for the plane angle is the radian, angles stated in d e g r e e s , min u te s , a n d s e c o n d s , o r in d e g r e e s a n d d e c ima l o f a d e g r e e ( p r e f e r r e d ) , s h a ll b e u s e d w h e n d ime n s io n in g p a r ts . T h e n u mb e r o f d e c i ma l p l a c e s i n t h e d i me n s i o n s h a l l b e t h e s a me a s t h e n u mb e r o f p l a c e s i n t h e r e q u ir e d t o l e r a n c e . T h e r o u n d i n g o f d i me n s i o n s a n d t o l e r a n c i n g s h al l b e i n a c c o r d a n c e w i t h s e c t i o n 1 0 . 2 . 2 . 2 o n p a g e 8 9 . D r a w in g s s h a ll b e d ime n s io n e d a n d toleranced in accordance with ANSI Y14.5M-1982. c.
S u r f a c e t e x t u r e v a l u e s s h a l l b e n o t e d i n mic r o me t e r s (µm) . S e e t h e f o l l o w i n g t a b le : Surface Texture Conversion Values
Micrometers 50 25 12.5 6.3 3.2 1.6 0.8 0.4 0.2 0.1 0.05 0.025
Microinches 2000 1000 500 250 125 63 32 16 8 4 2 1
Roughness Grade Numbers N12 N11 N10 N9 N8 N7 N6 N5 N4 N3 N2 N1
d. Forces, such as tensile and shear loads, shall be shown in n e w to n s ( N ) . e.
S tr e s s e s s h a ll b e s h o w n in me g a p a s c a ls ( MP a = P a x 1 0 6 ) . T h e f o llo w in g ta b le g iv e s e x a mp le s : U l t i ma t e S t r e n g th
English (PSI) Tensile 85,000 125,000 160,000 180,000 220,000 260,000 f.
S I ( MP a )
Shear 50,000 75,000 95,000 110,000 132,000 156,000
Tensile 600 900 1,100 1,250 1,550 1,800
Shear 340 540 660 750 930 1,080
P r e s s u r e v a lu e s f o r liq u id a n d g a s s h a ll b e s h o w n in k ilo p a s c a ls (kPa = Pa x 103 ).
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g . Ma s s v a lu e s s h a ll b e s h o w n in k ilo g r a ms ( k g ) . h . P r e f e r r e d d i a me t e r / p i t c h c o mb i n at i o n s f o r t h r e a d e d f a s t e n e r s a r e shown in the following table, in accordance with ISO/TC20/SC4 Re s o lu tio n s 1 6 9 a n d 2 2 0 .
Dash Numbers
Thread Size 1.0 x 0.25 1.2 x 0.25 1.6 x 0.35
Nominal Size -010 -012 -016
First Oversize (0.5 mm) -
2.0 x 0.40 2.5 x 0.45 3.0 x 0.50
-020 -025 -030
-
-
3.5 x 0.60 4.0 x 0.70 5.0 x 0.80
-035 -040 -050
-055
-
6.0 x 1.0 7.0 x 1.0 8.0 x 1.0
-060 -070 -080
-065 -075 -085
-090
10.0 x 1.25 12.0 x 1.25 14.0 x 1.50
-100 -120 -140
-105 -125 -145
-110 -130 -150
16.0 x 1.50 18.0 x 1.50 20.0 x 1.50
-160 -180 -200
-165 -185 -205
-170 -190 -210
22.0 x 1.5 24.0 x 2.0 27.0 x 2.0
-220 -240 -270
-225 -245 -275
-230 -250 -280
30.0 x 2.0 33.0 x 2.0 36.0 x 2.0 39.0 x 2.0
-300 -330 -360 -390
-305 -335 -365 -395
-310 -340 -370 -400
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i.
T h e to le r a n c e b lo c k o n th e G S F C d r a w in g f o r ma t s h a ll b e in a c c o r d a n c e w i t h t h e f o r ma t e x a mp l e i n F i g u r e 2 b o n p a g e 6 . T o le r a n c e s g iv e n in th e f o r ma t ma y b e a d j u s t e d t o r e f l e c t t h e r e q u ir e me n ts o f th e d e s ig n .
j.
P r e f e r r e d M e t r i c L i m i t s & F i t s ( A N S I B4 . 2 - 1 9 7 8 ) e n c o mp a s s e s to le r a n c e r e q u ir e d d e s ig n a tio n s , p r e f e r r e d limits , b a s ic s iz e s , a n d s ymb o ls .
k . G e n e r a l T o le r a n c e s fo r M e tr ic D im e n s io n e d P r o d u c ts ( A N S I B4 . 3 - 1 9 7 8 ) is u s e d f o r me tr ic d ime n s io n s w ith o u t to le r a n c e d e s ig n a tio n s .
10.2.2.
Unit Conversions
10.2.2.1.
Conversion of Dimensions
F o llo w in g is a ta b le o f s e le c te d c o n v e r s io n f a c to r s . I f f u r th e r c o n v e r s io n f a c to r s a r e n e e d e d , t h e r e f e r e n c e s o u t l i n e d i n p a r a g r a p h 1 0 . 2 o n p a g e 8 6 a r e v e r y u s e f u l. To Convert From: inch in2 foot ft2 lb lbf/in2 (psi) degrees Fahrenheit degrees Fahrenheit
To: meter m2 meter m2 kg Pa degrees Celsius kelvin
Multiply By: 2.540000 E–2* 6.451600 E–4* 3.048000 E–1* 9.290304 E–2* 4.5359237 E–1* 6.894757 E3 tC = (tF – 32)/1.8* tK = (tF + 459.67)/1.8*
* E x a c t c o n v e r s io n
10.2.2.2.
Unit Rounding a.
G e n e r a l Ro u n d in g Ru le s W h e n a f ig u r e is to b e r o u n d e d to f e w e r d ig its th a n th e to ta l n u mb e r a v a ila b le a n d th e f ir s t d ig it d is c a r d e d is le s s th a n 5 , th e la s t d ig it r e ta in e d s h o u ld n o t b e c h a n g e d . F o r e x a mp le , 3 . 4 6 3 2 5 , i f r o u n d e d t o t h r e e d e c i ma l p l a c e s ( i . e . , 4 s i g n i f i c a n t d ig its o r s imp ly 4 d ig its ) , w o u ld b e 3 . 4 6 3 ; if r o u n d e d to th r e e s ig n if ic a n t d ig its , 3 . 4 6 . W h e n t h e f i r s t d ig i t d is c a r d e d i s g r e a t e r t h a n 5 , o r i f i t i s a 5 f o llo w e d b y a t le a s t o n e d ig it o th e r th a n 0 , th e la s t d ig it r e ta in e d s h o u ld b e in c r e a s e d b y o n e u n it. F o r e x a mp le 8 . 3 7 6 5 2 , if r o u n d e d to f o u r d ig its , w o u ld b e 8 . 3 7 7 ; if r o u n d e d to th r e e d ig its , 8 . 3 8 .
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W h e n th e f ir s t d ig it d is c a r d e d is e x a c tly 5 , f o llo w e d o n ly b y zeros, the last digit retained (i.e., the digit preceding the 5, u n d e r lin e d in th e e x a mp le s b e lo w ) s h o u ld b e r o u n d e d u p w a r d if it is a n o d d n u mb e r , b u t n o a d j u s tme n t ma d e if it is a n e v e n n u mb e r . F o r e x a mp le , 4 . 3 6 5 , w h e n r o u n d e d to th r e e s ig n if ic a n t d ig its , b e c o me s 4 . 3 6 . T h e n u mb e r 4 . 3 5 5 w o u ld a ls o r o u n d to th e s a me v a lu e , 4 . 3 6 , if r o u n d e d to th r e e s ig n if ic a n t d ig its . T h is p r o c e d u r e is k n o w n a s “ o d d - e v e n r o u n d in g . ” E x a mp le : Ro u n d 4 6 . 0 2 5 0 0 t o t w o d e c i ma l p l a c e s . Answer:
46.02
E x a mp le : Ro u n d 4 1 . 2 7 5 0 0 t o t w o d e c i ma l p l a c e s . Answer:
41.28
G e n e r a l l y , t h e a c c u r a c y o f t h e n u mb e r o f s i g n i f i c a n t d i g i t s t o w h ic h a v a lu e is to b e r o u n d e d mu s t b e k n o w n b e f o r e a c o n v e r s io n f a c to r is u s e d . I f th is is n o t k n o w n , th e n th e b e s t r u le o f th u mb is to r o u n d th e f in a l v a lu e to th e n u mb e r o f s ig n if ic a n t d ig its c o r r e s p o n d in g to th e le a s t n u mb e r o f s ig n if ic a n t d ig its o f th e o r ig in a l, u n c o n v e r te d n u mb e r s . F o r e x a mp le , to c o n v e r t 1 1 . 4 f e e t ( f t) to me te r s ( m) : 1 1 . 4 x 0 . 3 0 4 8 = 3 . 4 7 4 7 2 , w h ic h r o u n d s to 3 . 4 7 me te r s . N e ith e r t h e c o n v e r s i o n f a c t o r n o r t h e q u an t i t y s h a l l b e r o u n d e d b e f o r e p e r f o r mi n g t h e mu l t i p l i c a t i o n , b e c a u s e a c c u r a c y w o u l d b e r e d u c e d . F o r c o n v e r t i n g i n c h e s ( i n ) t o mi l l i me t e r s ( mm) , w h i c h w o u ld g e n e r a lly b e th e c a s e in d r a w in g s , th e r u le o f th u mb is to r o u n d t o o n e l e s s d e c i ma l p l a c e t h a n t h e o r i g i n a l i n c h d i me n s i o n . W h e n c o n v e r t i n g f r o m mi l l i me t e r s t o i n c h e s , t h e r u l e i s t o r o u n d t o t w o mo r e de c i ma l p l a c e s t h a n t h e o r i g i n a l v a lu e . E x a mp l e : C o n v e r t 3 . 5 7 4 8 i n c h e s t o mi l l i me t e r s . 3.5748 x 25.4 = 90.79992
A n s w e r : 9 0 . 8 0 0 mm
E x a mp l e : C o n v e r t 1 . 6 2 5 i n c h e s t o mi l l i me t e r s . 1.625 x 25.4 = 41.275
A n s w e r : 4 1 . 2 8 mm
E x a mp l e : C o n v e r t 1 0 1 . 8 3 mi l l i me t e r s t o i n c h e s . 1 0 1 . 8 3 /2 5 . 4 = 4 . 0 0 9 0 5 5 1 1 8 A n s w e r : 4 . 0 0 9 1 in c h e s b . Ro u n d in g Ba s ic D ime n s io n s T o c o n v e r t b a s ic d ime n s io n s o f d r a w in g s f r o m in c h e s to mi l l i me t e r s , t h e c o n v e r t e d v a l u e s h a l l b e r o u n d e d t o t h r e e d e c i ma l p l a c e s s i n c e t h i s s h al l p r o v i d e a ma x i mu m c o n v e r s i o n e r r o r o f 0 . 0 0 0 0 2 in c h . I n c o n v e r tin g b a s ic d ime n s io n s f r o m mi l l i me t e r s t o i n c h e s , t h e v a l u e s h a l l b e r o u n d e d t o f i v e d e c i ma l p l a c e s , g i v i n g a ma x i mu m c o n v er s i o n e r r o r o f 0 . 0 0 0 0 0 5 i n c h .
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Ro u n d in g T o le r a n c e d D ime n s io n s T h e u s e o f t h e e x a c t r e l a t i o n 1 i n c h = 2 5 . 4 mi l l i me t e r s g e n e r a l l y p r o d u c e s mo r e th a n th e r e q u ir e d n u mb e r o f s ig n if ic a n t d ig its . T o r o u n d b o th th e d ime n s io n a n d th e to le r a n c e s , f ir s t c o n v e r t th e v a lu e s to th e n e c e s s a r y u n its . W h e n c o n v e r tin g f r o m in c h e s t o mi l l i me t e r s , mu l t i p l y b y 2 5 . 4 f o r a p r o d u c t ; w h e n c o n v e r t i n g f r o m mi l l i me t e r s t o i n c h e s , d i v i d e b y 2 5 . 4 f o r a q u o t i e n t . N e x t , take the total tolerance (i.e., the total value between the ma x imu m a n d min imu m limits ) a n d f r o m th e r e s p e c tiv e ta b le b e l o w f i n d t h e c o r r e c t n u mb e r o f d e c i ma l p l a c e s . T h e n r o u n d b o th th e d ime n s io n a n d th e to le r a n c e s to th e n u mb e r o f d e c ima l p l a c e s i n d i c a t e d . H o w e v e r , c a r e mu s t b e t a k e n s o t h a t t h e r o u n d e d to le r a n c e s f a ll in s id e th e o r ig in a l to le r a n c e v a lu e s a s e x p la in e d in p a r a g r a p h 1 0 . 2 . 2 . 2 . d . , “ P r e c is io n Ro u n d in g , ” o n page 92.
Original Total Tolerance in Inches At Least: 0.4 & over 0.04 0.004 0.0004 0.00004
But Less Than: 0.4 0.04 0.004 0.0004
Round Product To: Whole mm 0.X mm 0.XX mm 0.XXX mm 0.XXXX mm
Original Total Tolerance in Millimeters At Least: 2.0 & over 0.2 0.02 0.002
But Less Than: 2.0 0.2 0.02
Round Quotient To: 0.XX in 0.XXX in 0.XXXX in 0.XXXXX in
E x a mp l e : C o n v e r t 1 . 3 8 7 ± 0 . 0 0 3 i n c h e s t o mi l l i me t e r s . 1.387 x 25.4 = 35.2298;
0.003 x 25.4 = 0.0762
35.2298 ± 0.0762 T h e to ta l o r ig in a l to le r a n c e is 0 . 0 0 6 , w h ic h lie s b e tw e e n 0 . 0 0 4 a n d 0 . 0 4 , a n d a c c o r d i n g t o t h e f ir s t t a b l e , s h o u l d b e r o u n d e d t o 0 . X X mi l l i me t e r . A n s w e r : 3 5 . 2 3 ± 0 . 0 8 mm
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d . P r e c is io n Ro u n d in g ( I n s id e ) W h e n c o n v e r t e d , t o l e r a n c e s mu s t n e v e r e x c e e d t h e o r i g i n a l l y s p e c if ie d limits ( a s in th e c a s e w h e r e th e “ c o n v e r te d ” p a r ts a r e to b e in s p e c te d b y g a g e s ma d e f o r th e o r ig in a l p a r ts ) . T h e r o u n d - o f f mu s t b e s u c h th a t th e n e w d ime n s io n s s h a ll lie in s id e t h e o r i g i n a l t o l e r a n c e l i mi t s . T h i s ma y b e a c c o mp l i s h e d b y c o n v e r tin g th e ma x imu m a n d min imu m limits e x a c tly, a n d th e n r o u n d in g th e u p p e r limit to th e n e x t lo w e r v a lu e a n d r o u n d in g t h e l o w e r l i mi t t o t h e n e x t h ig h e r v a l u e . E x a mp l e : C o n v e r t
0 . 8 7 7 f r o m i n c h e s t o mi l l i me t e r s w i t h o u t 0.874 v io la t i o n o f t h e o r i g i n a l l i mi t s : 0.877 x 25.4 = 22.2758;
0.874 x 25.4 = 22.1996
T h e to ta l o r ig in a l to le r a n c e is 0 . 0 0 3 , w h ic h lie s b e tw e e n 0 . 0 0 0 4 and 0.004 and, according to the preceding table, should be r o u n d e d t o 0 . X X X mi l l i me t e r s . Answer:
2 2 . 2 7 5 mm 2 2 . 2 0 0 mm
N o t e t h a t 2 2 . 2 7 5 8 i s n o t r o u n d e d t o 2 2 . 2 7 6 mm b e c a u s e i t w o u l d violate the “inside” rule.
10.3.
Design References a.
F i n i s h e s o f M e t a l a n d W o o d S u r f a c e s : M I L - S T D - 1 7 1 . R e f e r e n c e d o c u me n t ( f o r a w o r k in g k n o w le d g e ) : MI L - H D BK - 1 3 2 A .
b . G e a r s /G e a r Cla s s if ic a tio n a n d I n s p e c tio n H a n d b o o k T o le r a n c e s a n d Me a s u r in g Me th o d s f o r U n a s s e mb le d S p u r a n d H e lic a l G e a r s ( in c lu d in g me tr ic e q u iv a le n ts ) : A G MA 2 0 0 0 - A - 8 8 . c.
G e a r Cla s s if ic a tio n , Ma te r ia ls , a n d Me a s u r in g Me th o d s f o r Be v e l, H yp o id , F in e P itc h W o r mg e a r in g , a n d Ra c k s O n ly a s U n a s s e mb le d G e a r s : A G MA 3 9 0 . 0 3 A - 8 8 .
d . O p tic s /G e n e r a l S p e c if ic a tio n G o v e r n in g th e Ma n u f a c tu r e , A s s e mb ly, a n d I n s p e c tio n o f O p tic a l Co mp o n e n ts f o r F ir e Co n tr o l I n s tr u me n ts : MI L - O - 1 3 8 3 0 . e.
S o ld e r in g /G e n e r a l S p e c if ic a tio n f o r S o ld e r in g P r o c e s s ( f o r n o n e le c tr ic a l a p p lic a tio n s ) : MI L - S - 6 8 7 2 .
f.
S p r in g s /D r a w in g Re q u ir e me n ts f o r Me c h a n ic a l S p r in g s : MI L - S T D - 2 9 .
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10.4.
93
Control of Surface Roughness 10.4.1.
Surface Texture Surface texture, surface roughness, waviness, and lay shall be in accordance with ANSI B46.1-1985 (or later revisions). The s ymb o ls b e lo w a r e e x a mp le s o f mic r o in c h f in is h s ymb o ls a n d th e ir mic r o me t e r e q u i v a l e n t s t h a t a r e mos t c o mmo n l y u s e d . R e f e r t o t h e A N S I B4 6 . 1 - 1 9 8 5 f o r f u r th e r d a ta s u c h a s w a v in e s s a n d la y. Me tr ic e q u iv a le n ts w ith r o u g h n e s s g r a d e n u mb e r s to th e f o llo w in g a r e f o u n d in p a r a g r a p h 1 0 . 2 . 1 c o n p a g e 8 7 .
Mic r o in c h
Mic r o me te r Ro u g h Ma c h in in g . Mating Surfaces. Mo v in g P a r ts . Precision Parts. P o lis h e d P a r ts . L a p p e d P a r ts .
10.4.2.
Surface Texture Symbols S y mb o l s d e p i c t i n g a c c e p t a b l e s u r f a c e c o n d i t i o n s s h a l l b e i n accordance with ANSI Y14.36-1978 (R 1987) (or later revisions).
10.4.3.
Surface Texture Standards Co p ie s o f b o th A N S I B4 6 . 1 - 1 9 8 5 a n d A N S I Y 1 4 . 3 6 - 1 9 7 8 a r e available from A me r i c a n N a t i o n a l S t a n d a r d s I n s t i t u t e 1 4 3 0 Br o a d w a y New York, NY 10018
10.5.
Thread Specifications S c r e w - th r e a d c o n v e n tio n s , me th o d s o f s p e c if yin g , a n d d e s ig n s h a ll b e in accordance with the following specifications: a.
Screw-Thread Standards for Federal Services, Federal Standard F E D - S T D - H 2 8 , d e ta ile d s ta n d a r d s a s f o llo w s :
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F E D - S T D - H 2 8 / 1 N o me n c l a t u r e , D e f i nitio n s , a n d L e tte r S ymb o ls f o r S c r e w Threads. F E D - S T D - H 2 8 / 2 U n i f i e d T h r e a d F o r m an d T h r e a d S e r i e s f o r B o l t s , S c r e w s , N u ts , T a p p e d H o le s , a n d G e n e r a l A p p lic a tio n s . F E D - S T D - H 2 8 /3 U n if ie d T h r e a d s o f S p e c ia l D ia me te r , P itc h e s , a n d L e n g th s o f E n g a g e me n t. F E D - S T D - H 2 8 /4 Co n tr o lle d Ra d iu s Ro o t S c r e w T h r e a d s , U N J S ymb o l. F E D - S T D - H 2 8 /5 U n if ie d Min ia tu r e S c r e w T h r e a d s . F E D - S T D - H 2 8 /6 G a g e s a n d G a g in g f o r U n if ie d S c r e w T h r e a d s . F E D - S T D - H 2 8 /7 A me r ic a n S ta n d a r d P ip e T h r e a d s ( e x c e p t D r y s e a l a n d H o s e Co u p lin g T yp e s ) . F E D - S T D - H 2 8 / 8 D r ys e a l A me r i c a n S ta n d a r d P ip e T h r e a d s . F E D - S T D - H 2 8 /9 G a s C y l i n d e r V a l v e O u t l e t a n d I n l e t T h r e a d s . F E D - S T D - H 2 8 /1 0 A me r ic a n N a tio n a l H o s e Co u p lin g a n d F ir e - H o s e Co u p lin g Threads. F E D - S T D - H 2 8 /1 1 H o s e Co n n e c tio n s f o r W e ld in g a n d Cu ttin g E q u ip me n t. F E D - S T D - H 2 8 / 1 2 A c me T h r e a d s . F E D - S T D - H 2 8 /1 3 S tu b A c me T h r e a d s . F E D - S T D - H 2 8 /1 4 N a tio n a l Bu ttr e s s T h r e a d s . F E D - S T D - H 2 8 /1 5 A me r ic a n S ta n d a r d Ro lle d T h r e a d s f o r S c r e w S h e lls o f E l e c t r i c L a mp H o l d e r s a n d f o r S c r e w S h e l l s o f U n a s s e mb l e d L a mp B a s e s . FED-STD-H28/16 Microscope Objective and Nosepiece Threads, 0.800— 3 6 A MO . F E D - S T D - H 2 8 /1 7 S u r v e yin g I n s tr u me n t Mo u n tin g T h r e a d s . F E D - S T D - H 2 8 /1 8 P h o to g r a p h ic E q u ip me n t T h r e a d s . F E D - S T D - H 2 8 /1 9 Mis c e lla n e o u s T h r e a d s . F E D - S T D - H 2 8 / 2 0 I n s p e c t i o n M e t h o d s f or A c c e p t a b i l i t y o f U N , U N R , U N J , M , and MJ Screw-Threads. F E D - S T D - H 2 8 /2 1 A Me tr ic S c r e w - T h r e a d S ta n d a r d s . F E D - S T D - H 2 8 / 2 2 Me t r i c S c r e w - T h r e a d G a g e s . b . G e n e r a l S p e c i f i c a t i o n f o r S c r e w T h r e a d s , S t a n d a r d , O p t i mu m S e l e c t e d S e r i e s , Military Specification MIL-S-7742.
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G e n e r a l Re q u ir e me n ts f o r P ip e T h r e a d s , T a p e r , A e r o n a u tic a l N a tio n a l F o r m, S y mb o l - A N P T , M i l i t a r y S p e c i f i c a t i o n M I L - P - 7 1 0 5 .
d . G e n e r a l S p e c if ic a tio n f o r S c r e w T h r e a d s , Co n tr o lle d Ra d iu s Ro o t W ith I n c r e a s e d M i n o r D i a me t e r , Mi l i t a r y S p e c i f i c a t i o n M I L - S - 8 8 7 9 . e.
Me tr ic S c r e w T h r e a d s M P r o f ile A N S I /A S ME B1 . 1 3 M- 1 9 8 3 .
f.
Me tr ic S c r e w T h r e a d s MJ P r o f ile A N S I B1 . 2 1 M- 1 9 7 8 .
g . S c r e w T h r e a d Re p r e s e n ta tio n s ( Co n v e n tio n s a n d Me th o d s o f S p e c if yin g ) , A me r ic a n N a tio n a l S ta n d a r d A N SI Y 1 4 . 6 - 1 9 7 8 , a n d A N S I Y 1 4 . 6 a M- 1 9 8 1 ( Me tr ic S u p p le me n t) .
10.6.
Welding—Fusion and Resistance 10.6.1.
General T h e s ta n d a r d d e f in itio n f o r th e t e r m “ w e l d ” i s a l o c a l i z e d c o a l e s c e n c e o f me t a l s w h e r e c o a l e s c e n c e i s p r o d u c e d b y h e a t i n g t o s u ita b le te mp e r a tu r e s , w ith o r w ith o u t th e a p p lic a tio n o f p r e s s u r e , a n d w i t h o r w i t h o u t t h e u s e o f f i l l e r me t a l . T h e f i l l e r me t a l e i t h e r h a s a me ltin g p o in t a p p r o x ima te ly th e s a me a s th e b a s e me ta l o r h a s a me ltin g p o in t b e lo w th a t o f th e b a s e me ta l b u t a b o v e 8 0 0 d e g r e e s F . F o r s ta n d a r d w e ld in g s p e c if ic a tio n c a llo u ts , r e f e r to “ J o in in g Me th o d N o te s , ” p a r a g r a p h 2 . 4 . 4 . 3 o n p a g e 1 8 .
10.6.2.
Basic Weld Symbols and Their Location Significance B a s i c w e l d s y mb o l s a n d t h e i r l o c a t i o n s i g n i f i c a n c e s h a l l b e i n accordance with ANSI AWS A 2.4-86 (or later revisions). Copies are available from A me r i c a n W e l d i n g S o c i e t y 2 5 0 1 N W 7 th S tr e e t Mia mi, F L 3 3 1 2 5
10.7.
Outgassing of Spacecraft Materials N A S A Re f e r e n c e P u b lic a tio n , RP - 1 1 2 4 , N o v e mb e r 1 9 9 0 , O u tg a s s in g D a ta fo r S e l e c t i n g S p a c e c r a f t M a t e r i a l s, c o v e r s a w id e r a n g e o f ma te r ia ls , in c lu d in g a d h e s iv e s , c o mp o u n d s , c o a tin g s , in s u la tio n , a n d v a r io u s o th e r ma te r ia ls . A s p r e s e n t e d , t h e d a t a r e p r e s e n t t h e “ t o ta l ma s s l o s s ” ( T M L ) a n d t h e “ C o l l e c t e d Volatile Condensable Materials” (CVCM), as derived from tests at 398 K (125 C) f o r 2 4 h o u r s in v a c u u m p e r A S T M E 5 9 5 - 8 4 . T h e p u b lic a tio n c a n b e p u r c h a s e d a s d o c u me n t n u mb e r N - 8 8 - 1 0 1 1 7 f r o m
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N a tio n a l T e c h n ic a l I n f o r ma t i o n S e r v i c e ( N T I S ) 5 2 8 5 P o r t Ro ya l Ro a d S p r in g f ie ld , V A 2 2 1 5 1
10.8.
Standards and Specifications Index 10.8.1.
National Bureau of Standards NBS IR81-229, A Technical Briefing on the Initial Graphics Exchange Specification (IGES).
10.8.2.
Federal Co mme r c e Co mmis s io n Re g u la tio n 4 9 - CF R7 1 - 7 8 Co mme r c e Co mmis s io n S a f e ty Re g u la tio n s C o mme r c i a l a n d G o v e r n me n t E n t i t y ( C A G E ) P u b l i c a t i o n H 4 / H 8 S e c tio n A : N a me to CA G E Co d e ; S e c tio n B: CA G E Co d e to N a me ( f o r me r l y F S C M H 4 a n d F S C N M H 8 ) . F E D - S T D - H 2 8 /1 , N o me n c la tu r e , D e f in itio n s , a n d L e tte r S ymb o ls for Screw Threads. F E D - S T D - H 2 8 /2 , U n if ie d T h r e a d F o r m a n d T h r e a d S e r ie s f o r Bo lts . F E D - S T D - H 2 8 /3 , U n if ie d T h r e a d s o f S p e c i a l D i a me t e r , P i t c h e s , a n d L e n g th s o f E n g a g e me n t. F E D - S T D - H 2 8 /4 , Co n tr o lle d Ra d iu s Ro o t S c r e w T h r e a d s , U N J S ymb o l. F E D - S T D - H 2 8 /5 , U n if ie d Min ia tu r e S c r e w T h r e a d s . F E D - S T D - H 2 8 /6 , G a g e s a n d G a g in g f o r U n if ie d S c r e w T h r e a d s . F E D - S T D - H 2 8 /7 , A me r ic a n S ta n d a r d P i p e T h r e a d s ( e x c e p t D r y s e a l a n d H o s e Co u p lin g T yp e s . F E D - S T D - H 2 8 / 8 , D r ys e a l A me r i c a n S t a n d a r d P i p e T h r e a d s . F E D - S T D - H 2 8 /9 , G a s C y l i n d e r V a l v e O u t l e t a n d I n l e t T h r e a d s . F E D - S T D - H 2 8 /1 0 , A me r ic a n N a tio n a l H o s e Co u p lin g a n d F ir e Hose. F E D - S T D - H 2 8 /1 1 , H o s e Co n n e c tio n s f o r W e ld in g a n d Cu ttin g E q u ip me n t. F E D - S T D - H 2 8 / 1 2 , A c me T h r e a d s . F E D - S T D - H 2 8 /1 3 , S tu b A c me T h r e a d s . F E D - S T D - H 2 8 /1 4 , N a tio n a l Bu ttr e s s T h r e a d s .
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F E D - S T D - H 2 8 /1 5 , A me r ic a n S ta n d a r d Ro lle d T h r e a d s f o r S c r e w S h e l l s f o r E l e c t r i c L a mp H o l d e r s & U n a s s e mb l e d L a mp B a s e s . FED-STD-H28/16, Microscope Objective and Nosepiece Threads. F E D - S T D - H 2 8 /1 7 , S u r v e yin g I n s tr u me n t Mo u n tin g T h r e a d s . F E D - S T D - H 2 8 /1 8 , P h o to g r a p h ic E q u ip me n t T h r e a d s . F E D - S T D - H 2 8 /1 9 , Mis c e lla n e o u s T h r e a d s . FED-STD-H28/20, Inspection Methods for Acceptability of UN, U N R , U N J , M, a n d MJ S c r e w - T h r e a d s . F E D -S T D -H 2 8 /2 1 , Me tr ic S c r e w - T h r e a d S ta n d a r d s . F E D - S T D - H 2 8 / 2 2 , Me t r i c S c r e w - T h r e a d G a g e s . F E D -S T D -5 9 5 , Co lo r s . Q Q - B- 6 5 4 , Br a z in g A llo ys , S ilv e r . Q Q - C- 3 2 0 , Ch r o miu m P la tin g ( E le c tr o d e p o s ite d ) . Q Q - P - 3 5 , P a s s iv a tio n T r e a tme n ts f o r Co r r o s io n - Re s is ta n t S te e l. Q Q - P - 4 1 6 , P la tin g , Ca d miu m ( E le c tr o d e p o s ite d ) . Q Q - S - 3 6 5 , S ilv e r P la tin g ( E le c tr o d e p o s ite d ) , G e n e r a l Re q u ir e me n ts for. Q Q - S - 5 7 1 , S o ld e r , T in A llo y, T in - L e a d A llo y, a n d L e a d A llo y. S a f e ty Re g u la tio n s 4 9 - CF R7 1 - 7 8 , Co mme r c e Co mmis s io n S a f e ty Re g u la tio n s .
10.8.3.
Industrial A G MA 3 9 0 . 0 3 A - 8 8 , G e a r Cla s s if ic a tio n a n d I n s p e c tio n H a n d b o o k T o le r a n c e s a n d Me a s u r in g Me th o d s f o r Be v e l, H yp o id , F in e P itc h W o r mg e a r in g , a n d Ra c k s . A G MA 2 0 0 0 - A - 8 8 , G e a r Cla s s if ic a tio n a n d I n s p e c tio n H a n d b o o k T o le r a n c e s a n d Me a s u r in g Me th o d s f o r U n a s s e mb le d S p u r a n d H e lic a l G e a r s ( I n c lu d in g Me tr ic E q u iv a le n ts ) . A MS 2 4 8 8 , A n o d ic T r e a tme n t o f T ita n iu m a n d T ita n iu m A llo ys . A N S I A W S A 2 . 4 - 1 9 8 6 , S ymb o ls f o r W e ld in g a n d N o n d e s tr u c tiv e T e s tin g . A N S I /A S ME B1 . 1 3 M- 1 9 8 3 , Me tr ic S c r e w T h r e a d s M P r o f ile . A N S I B1 . 2 1 M- 1 9 7 8 , Me tr ic S c r e w T h r e a d s MJ P r o f ile .
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A N S I B4 . 2 - 1 9 7 8 , P r e f e r r e d Me tr ic L imits a n d F its . A N S I B4 . 3 - 1 9 7 8 G e n e r a l T o le r a n c e s f o r Me tr ic D ime n s io n e d P r o d u c ts . ANSI B46.1-1985, Surface Texture (Surface Roughness, Waviness, a n d L a y) . A N S I Y 1 4 . 1 5 - 1 9 6 6 ( R- 7 3 ) , E le c tr ic a l a n d E le c tr o n ic s D ia g r a ms . A N S I Y 1 4 . 1 5 a - 1 9 7 1 , I n te r c o n n e c tio n D ia g r a ms . A N S I Y 1 4 . 1 5 b - 1 9 7 3 , E le c tr ic a l a n d E le c tr o n ic s D ia g r a ms . A N S I Y 1 4 . 2 M- 1 9 7 9 , L in e Co n v e n tio n s a n d L e tte r in g . A N S I Y 1 4 . 2 6 M- 1 9 8 7 , D ig ita l Re p r e s e n ta tio n f o r Co mmu n ic a tio n o f Product Definition Data. A N S I Y 1 4 . 3 6 - 1 9 7 8 ( R 1 9 8 7 ) , S u r f a c e T e x t u r e S y mb o l s . A N S I Y 1 4 . 5 M- 1 9 8 2 , D ime n s io n in g a n d T o le r a n c in g . A N S I Y 1 4 . 6 - 1 9 7 8 , S c r e w T h r e a d Re p r e s e n ta tio n . A N S I Y 1 4 . 6 A M- 1 9 8 1 , S c r e w T h r e a d Re p r e s e n ta tio n ( Me tr ic S u p p le me n t) . ANSI Y32.2-1975, IEEE STD 315-1975, CSA Z99-1975, Graphic S y mb o l s f o r E l e c t r i c a l an d E l e c t r o n i c s D i a g r a ms . A N S I Y 3 2 . 9 - 1 9 7 2 , G r a p h ic S ymb o ls f o r E le c tr ic a l W ir in g a n d L a yo u t D i a g r a ms U s e d i n A r c h i t e c t u r e a n d B u i l d i n g Co n s tr u c tio n . A S T M D 4 1 2 6 , V a p o r D e g r e a s in g . A S T M E 3 8 0 - 9 1 a , S ta n d a r d P r a c tic e f o r U s e o f th e I n te r n a tio n a l S y s t e m o f U n i t s ( T h e M o d e r n i z e d M e t r i c S y s t e m) . A S T M E 5 9 5 - 8 4 , S ta n d a r d T e s t Me th o d f o r T o ta l Ma s s L o s s a n d C o l l e c t e d V o l a t i l e C o n d e n s i b l e M at e r i a l s F r o m O u t g a s s i n g i n a V a c u u m E n v ir o n me n t. N - 8 8 - 1 0 1 1 7 , N a tio n a l T e c h n ic a l I n f o r ma tio n S e r v ic e —O u tg a s s in g Data for Selecting Spacecraft Materials. N A S 1 0 0 0 0 , N A D o c u me n ts P r e p a r a tio n a n d Ma in te n a n c e in S I ( Me t r i c ) U n i t s .
10.8.4.
Military D O D - S T D - 1 8 6 6 , S o ld e r in g S p e c if ic a tio n .
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MI L - A - 8 6 2 5 , A n o d ic Co a tin g s , f o r A lu min u m a n d A lu min u m Alloys. MI L - B- 7 8 8 3 , Br a z in g o f S te e ls , Co p p e r , Co p p e r A llo ys , N ic k e l A llo ys , A lu min u m, a n d A lu min u m A llo ys . MI L - C- 5 5 4 1 , Ch e mic a l Co n v e r s io n Co a tin g s o n A lu min u m a n d A lu min u m A llo ys . MI L - C- 1 2 9 6 8 , Co a tin g s , P h o s p h a te , P r o te c tiv e . MI L - C- 1 3 9 2 4 , Co a tin g , O x id e , Bla c k , f o r F e r r o u s Me ta ls . MI L -D -5 4 8 0 , D a ta , E n g in e e r in g a n d T e c h n ic a l, Re p r o d u c tio n R e q u i r e me n t s f o r . MI L - H - 6 0 8 8 , H e a t T r e a tme n t o f A lu min u m A llo ys . MI L - H - 6 8 7 5 , H e a t T r e a tme n t o f S te e l, P r o c e s s e s f o r . M I L - H - 7 1 9 9 , H e a t T r e a t me n t o f W r o u g h t C o p p e r - B e r y l l i u m A l l o y s , Process for. MI L - H D BK - 1 3 2 A , P r o te c tiv e F in is h e s f o r Me ta l a n d W o o d Surfaces. MI L - I - 4 5 9 3 2 /1 , I n s e r t, S c r e w T h r e a d - T h in W a ll, L o c k e d in . MI L - L - 4 6 0 1 0 , L u b r ic a n t, S o lid F ilm, H e a t Cu r e d , Co r r o s io n . MI L -M-9 8 6 8 , Mic r o f ilmin g o f E n g in e e r in g D o c u me n ts , 3 5 MM, R e q u i r e me n t s f o r . MI L - N - 4 5 9 3 8 /1 , N u t, P la in , Clin c h ( S e lf - Clin c h in g , Ro u n d ) . MI L - O - 1 3 8 3 0 , O p tic a l Co mp o n e n ts f o r F ir e Co n tr o l I n s tr u me n ts ; G e n e r a l S p e c if ic a tio n G o v e r n in g th e Ma n u f a c tu r in g , A s s e mb ly, a n d I n s p e c tio n o f . MI L - P - 1 1 6 , P r e s e r v a tio n , Me th o d s o f . MI L -P -7 1 0 5 , P ip e T h r e a d s , T a p e r , A e r o n a u tic a l N a tio n a l F o r m, S ymb o l A N P T , G e n e r a l Re q u ir e me n t f o r . MI L - R- 2 8 0 0 2 , Ra s te r G r a p h ic s Re p r e s e n ta tio n in Bin a r y F o r ma t, R e q u i r e me n t s f o r . MI L -S -6 8 7 2 , G e n e r a l S p e c if ic a tio n f o r S o ld e r in g P r o c e s s ( n o n electrical). MI L -S -7 7 4 2 , S c r e w T h r e a d s , S T D , O p timu m S e le c te d S e r ie s , General Specification for.
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MI L -S -8 8 7 9 , S c r e w T h r e a d s , Co n tr o lle d Ra d iu s Ro o t W ith I n c r e a s e d M i n o r D i a me t e r ; G e n e r a l S p e c i f i c a t i o n f o r . MI L -S T D -1 2 , A b b r e v ia tio n s . MI L -S T D -2 9 , D r a w in g Re q u ir e me n ts f o r Me c h a n ic a l S p r in g s . MI L - S T D - 1 0 0 , E n g in e e r in g D r a w in g P r a c tic e s . M I L -S T D -1 7 1 , F i n i s h e s o f M e t a l a n d W o o d S u r f a c e s . MI L - S T D - 4 0 3 , P r e p a r a tio n f o r a n d I n s ta lla tio n o f Riv e ts a n d Screws, Rocket and Missile Structures. MI L -S T D -0 0 4 5 3 , Ra d io g r a p h ic I n s p e c tio n . MI L - S T D - 6 4 5 , D ip Br a z in g o f A lu min u m A llo ys . MI L -S T D -2 1 5 4 , U ltr a s o n ic I n s p e c tio n . M I L -S T D -2 2 1 9 , F u s i o n W e l d i n g f o r A e r o s p a c e A p p l i c a t i o n s . MI L - T - 7 1 3 , T w in e , F ib r o u s ; I mp r e g n a te d , L a c in g a n d T yin g . MI L - W - 4 6 1 3 2 , E le c tr o n ic Be a m W e ld in g . MS 3 3 5 3 7 , I n s e r t, S c r e w T h r e a d , H e lic a l Co il, Co a r s e a n d F in e T h r e a d , S ta n d a r d D ime n s io n s f o r . MS 5 1 8 3 5 , I n s e r ts a n d S tu d s , L o c k e d I n - K e y L o c k e d , H o le D ime n s io n s f o r a n d A s s e mb ly o f .
10.8.5.
NASA G S F C 7 3 1 - 0 0 0 5 - 8 3 , G e n e r a l F r a c tu r e Co n tr o l P la n f o r P a ylo a d s Using the Space Transportation System (STS). G S F C- G H B- 2 2 0 0 . 2 , S c ie n tif ic a n d T e c h n ic a l I n f o r ma tio n Handbook. G S F C S - 2 5 0 - 3 , G u id e f o r th e P r e p a r a tio n o f S p e c if ic a tio n s . G S F C S - 3 1 3 - 0 0 9 , F lu o r e s c e n t P e n e tr a n t T e s t Me th o d Re q u ir e me n ts and Guidelines. G S F C S - 3 1 3 - 1 0 0 , G S F C F a s te n e r I n te g r ity Re q u ir e me n ts . G S F C- S T D - 2 5 6 - W E - 1 , F o r Y o u r I n f o r ma tio n , A Co mp e n d iu m o f G e n e r a l Re f e r e n c e D a ta f o r T e c h n ic a l W r itin g a n d E d itin g . G S F C X - 6 7 3 - 6 4 - 1 F , G S F C E n g in e e r in g S ta n d a r d s D e s ig n Ma n u a l. N A S A Re f e r e n c e P u b lic a tio n RP - 1 1 2 4 , N o v e mb e r 1 9 9 0 , O u tg a s s in g Data for Selecting Spacecraft Materials.
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N H B 5 3 0 0 . 4 ( 3 A - l) 1 9 7 6 , Re q u ir e me n ts f o r S o ld e r e d E le c tr ic a l Co n n e c tio n s . N MI 8 0 1 0 2 A , U s e o f th e Me tr ic S ys te m o f Me a s u r e me n t in N A S A P r o g r a ms . N S T S 0 7 7 0 0 , S ys te m D e s c r ip tio n a n d D e s ig n D a ta , I n te r v e h ic u la r Activities.
10.9.
Standards and Specifications Numerical Index Specification
Page
A G MA 2 0 0 0 - A - 8 8 , G e a r Cla s s if ic a tio n a n d I n s p e c tio n H a n d b o o k T o le r a n c e s a n d Me a s u r in g Me th o d s f o r U n a s s e mb le d S p u r a n d H e lic a l G e a r s ( I n c lu d in g Me tr ic E q u iv a le n ts ) .
92
A G MA 3 9 0 . 0 3 A - 8 8 , G e a r Cla s s if ic a tio n Ma te r ia ls a n d Me a s u r in g Me th o d s f o r Be v e l, H yp o id , F in e P itc h W o r mg e a r in g , a n d Ra c k s .
92
A MS 2 4 8 8 , A n o d ic T r e a tme n t o f T ita n iu m a n d T ita n iu m Alloys.
19
A N S I A W S A 2 . 4 - 8 6 , S ymb o ls f o r W e ld in g a n d N o n d e s tr u c tiv e T e s tin g .
95
A N S I B1 . 2 1 M- 1 9 7 8 , Me tr ic S c r e w T h r e a d s MJ P r o f ile
95 Page
Specification A N S I B4 . 2 - 1 9 7 8 , P r e f e r r e d Me tr ic L imits a n d F its .
89
ANSI B46.1-1985, Surface Texture (Surface Roughness, W a v in e s s , a n d L a y) .
93
A N S I Y 1 4 . 1 5 - 1 9 6 6 ( R- 7 3 ) , E le c tr ic a l a n d E le c tr o n ic s D ia g r a ms .
43
A N S I Y 1 4 . 1 5 a - 1 9 7 1 , I n te r c o n n e c tio n D ia g r a ms .
43
A N S I Y 1 4 . 1 5 b - 1 9 7 3 , E le c tr ic a l a n d E le c tr o n ic s D ia g r a ms .
43
A N S I Y 1 4 . 2 M- 1 9 7 9 , L in e Co n v e n tio n s a n d L e tte r in g .
35
A N S I Y 1 4 . 2 6 M- 1 9 8 7 , D ig ita l Re p r e s e n ta tio n f o r Co mmu n ic a tio n o f P r o d u c t.
84
A N S I Y 1 4 . 3 6 - 1 9 7 8 ( R 1 9 8 7 ) , S u r f a c e T e x t u r e S y mb o l s .
93
A N S I Y 1 4 . 5 M- 1 9 8 2 , D ime n s io n in g a n d T o le r a n c in g . 1, 7, 16, 28, 85, 87, 107, 108
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A N S I Y 1 4 . 6 - 1 9 7 8 , S c r e w T h r e a d Re p r e s e n ta tio n .
95
A N S I Y 1 4 . 6 a M- 1 9 8 1 , S c r e w T h r e a d Re p r e s e n ta tio n ( Me tr ic S u p p le me n t) .
95
ANSI Y32.2-1975, IEEE STD 315-1975, CSA Z99-1975, G r a p h i c S y mb o l s f o r E l e c t r i c a l a n d E le c tr o n ic D ia g r a ms .
43
A N S I Y 3 2 . 9 - 1 9 7 2 , G r a p h ic S ymb o ls f o r E le c tr ic a l W ir in g a n d L a yo u t D ia g r a ms U s e d in A r c h ite c tu r e a n d Bu ild in g Co n s tr u c tio n .
43
A N S I /A S ME B1 . 1 3 M- 1 9 8 3 , Me tr ic S c r e w T h r e a d s M P r o f ile
95
A S T M D 4 1 2 6 , V a p o r D e g r e a s in g .
20
A S T M E 3 8 0 - 9 1 a , S ta n d a r d P r a c tic e f o r U s e o f th e International System of Units (The Modernized Metric S ys te m) .
86
A S T M E 5 9 5 - 8 4 , S ta n d a r d T e s t Me th o d f o r T o ta l Ma s s L o s s and Collected Volatile Condensible Materials From O u tg a s s in g in a V a c u u m E n v ir o n me n t.
95
Co mme r c e Co mmis s io n Re g u la tio n 4 9 - CF R7 1 - 7 8 , Co mme r c e Co mmis s io n S a f e ty Re g u la tio n s .
22
C o mme r c i a l a n d G o v e r n me n t E n t i t y ( C A G E ) P u b l i c a t i o n H 4 /H 8 .
7, 72, 75 Page
Specification D O D - S T D - 1 8 6 6 , S o ld e r in g S p e c if ic a tio n .
18
F E D - S T D - 5 9 5 , Co lo r s
19
F E D - S T D - H 2 8 /1 , N o me n c la tu r e , D e f in itio n s , a n d L e tte r S ymb o l s f o r S c r e w T h r e a d s .
93
F E D - S T D - H 2 8 /2 , U n if ie d T h r e a d F o r m a n d T h r e a d S e r ie s f o r Bo lts , S c r e w s , N u ts , T a p p e d H o le s , a n d G e n e r a l A p p lic a tio n s .
93
F E D - S T D - H 2 8 / 3 , U n i f i e d T h r e a d s o f S p e c i a l D i a me t e r , P itc h e s , a n d L e n g th s o f E n g a g e me n ts .
93
F E D - S T D - H 2 8 /4 , Co n tr o lle d Ra d iu s Ro o t S c r e w T h r e a d s , U N J S ymb o l.
93
F E D - S T D - H 2 8 /5 , U n if ie d Min ia tu r e S c r e w T h r e a d s .
93
F E D - S T D - H 2 8 /6 , G a g e s a n d G a g in g f o r U n if ie d S c r e w Threads.
93
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F E D - S T D - H 2 8 / 7 , A me r i c a n S t a n d a r d P ip e T h r e a d s ( e x c e p t D r ys e a l a n d H o s e Co u p lin g T yp e s ) .
93
F E D - S T D - H 2 8 /8 , D r ys e a l A me r ic a n S ta n d a r d P ip e T h r e a d s .
93
F E D - S T D - H 2 8 /9 , G a s C y l i n d e r V a l v e O u t l e t a n d I n l e t Threads.
93
F E D - S T D - H 2 8 /1 0 , A me r ic a n N a tio n a l H o s e Co u p lin g a n d F ir e - H o s e Co u p lin g T h r e a d s .
93
F E D - S T D - H 2 8 /1 1 , H o s e Co n n e c tio n s f o r W e ld in g a n d Cu ttin g E q u ip me n t.
93
F E D - S T D - H 2 8 /1 2 , A c me T h r e a d s .
93
F E D - S T D - H 2 8 /1 3 , S tu b A c me T h r e a d s .
93
F E D - S T D - H 2 8 /1 4 , N a tio n a l Bu ttr e s s T h r e a d s .
93
F E D - S T D - H 2 8 /1 5 , A me r ic a n S ta n d a r d Ro lle d T h r e a d s f o r S c r e w S h e l l s o f E l e c t r i c L amp H o l d e r s a n d f o r S c r e w S h e l l s o f U n a s s e mb l e d L a mp B a s e s .
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FED-STD-H28/16, Microscope Objective and Nosepiece T h r e a d s , 0 . 8 0 0 - 3 6 A MO .
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F E D - S T D - H 2 8 /1 7 , S u r v e yin g I n s tr u me n t Mo u n tin g T h r e a d s .
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F E D - S T D - H 2 8 /1 8 , P h o to g r a p h ic E q u ip me n t T h r e a d s .
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Specification F E D - S T D - H 2 8 /1 9 , Mis c e lla n e o u s T h r e a d s .
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FED-STD-H28/20, Inspection Methods for Acceptability of U N , U N R , U N J , M, a n d MJ S c r e w - T h r e a d s .
94
F E D - S T D - H 2 8 /2 1 A , Me tr ic S c r e w - T h r e a d S ta n d a r d s .
94
F E D - S T D - H 2 8 /2 2 , Me tr ic S c r e w - T h r e a d G a g e s .
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G S F C 7 3 1 - 0 0 0 5 - 8 3 , G e n e r a l F r a c tu r e Co n tr o l P la n f o r Payloads Using the Space Transportation System (STS).
20
G S F C S - 2 5 0 - 3 , G u id e f o r th e P r e p a r a tio n o f S p e c if ic a tio n s .
60
G S F C S - 3 1 3 - 0 0 9 , F lu o r e s c e n t P e n e tr a n t T e s t Me th o d Re q u ir e me n ts a n d G u id e lin e s .
20
G S F C S - 3 1 3 - 1 0 0 , G S F C F a s te n e r I n te g r ity Re q u ir e me n ts .
14
G S F C S T D - 2 5 6 - W E - 1 , F o r Y o u r I n f o r ma tio n — A Co mp e n d iu m O f G e n e r a l Re f e r e n c e D a ta .
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G S F C X - 6 7 3 - 6 4 - 1 F , G S F C E n g in e e r in g D r a w in g S ta n d a r d s Manual. iii, 16, 21 MI L - A - 8 6 2 5 , A n o d ic Co a tin g s , f o r A lu min u m a n d A lu min u m Alloys.
19
MI L - B- 7 8 8 3 , Br a z in g o f S te e ls , Co p p e r , Co p p e r A llo ys , N ic k e l A llo ys , A lu min u m, a n d A lu min u m A llo ys .
18
MI L - C- 5 5 4 1 , Ch e mic a l Co n v e r s io n Co a tin g s o n A lu min u m a n d A lu min u m A llo ys .
19
MI L - C- 1 2 9 6 8 , Co a tin g s , P h o s p h a te , P r o te c tiv e .
19
MI L - C- 1 3 9 2 4 , Co a tin g , O x id e , Bla c k , f o r F e r r o u s Me ta ls . MI L - D - 5 4 8 0 , D a ta , E n g in e e r in g a n d T e c h n ic a l, Re p r o d u c tio n Re q u ir e me n ts f o r . MI L - H - 6 0 8 8 , H e a t T r e a tme n t o f A lu min u m A llo ys .
109
83 17, 18
MI L - H - 6 8 7 5 , H e a t T r e a tme n t o f S te e l, P r o c e s s e s f o r .
17
M I L - H - 7 1 9 9 , H e a t T r e a t me n t o f W r o u g h t C o p p e r - B e r y l l i u m A l l o ys , P r o c e s s f o r .
17
MI L - H D BK - 1 3 2 A , P r o te c tiv e F in is h e s f o r Me ta l a n d W o o d Surfaces.
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Specification MI L - I - 4 5 9 3 2 /1 , I n s e r t, S c r e w T h r e a d - T h in W a ll, L o c k e d In.
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MI L - L - 4 6 0 1 0 , L u b r ic a n t, S o lid F ilm, H e a t Cu r e d , Co r r o s io n . 2 0 , 1 0 9 MI L - M- 9 8 6 8 , Mic r o f ilmin g o f E n g in e e r in g D o c u me n ts , 3 5 mm, Re q u ir e me n ts f o r .
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MI L - N - 4 5 9 3 8 /1 , N u t, P la in , Clin c h ( S e lf - Clin c h in g , Ro u n d ) .
21
MI L - O - 1 3 8 3 0 , O p tic a l Co mp o n e n ts f o r F ir e Co n tr o l I n s tr u me n ts ; G e n e r a l S p e c if ic a tio n G o v e r n in g th e Ma n u f a c tu r in g , A s s e mb ly, a n d I n s p e c tio n o f .
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MI L - P - 1 1 6 , P r e s e r v a tio n , Me th o d s o f .
21, 22
MI L - P - 7 1 0 5 , P ip e T h r e a d s , T a p e r , A e r o n a u tic a l N a tio n a l F o r m, S ymb o l A N P T , G e n e r a l Re q u ir e me n ts f o r .
95
MI L - R- 2 8 0 0 2 , Ra s te r G r a p h ic s Re p r e s e n ta tio n in Bin a r y F o r ma t , R e q u i r e me n t s f o r .
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MI L - S - 7 7 4 2 , S c r e w T h r e a d s , S T D , O p timu m S e le c te d Series, General Specification for.
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MI L - S - 8 8 7 9 , S c r e w T h r e a d s , Co n tr o lle d Ra d iu s Ro o t w ith Increased Minor.
95
MI L - S T D - 0 0 4 5 3 , Ra d io g r a p h ic I n s p e c tio n .
20
MI L - S T D - 1 2 , A b b r e v ia tio n s .
12
MI L - S T D - 1 0 0 E , E n g in e e r in g D r a w in g P r a c tic e s . MIL-STD-171, Finishes of Metal and Wood Surfaces.
1 18, 92
MI L - S T D - 2 1 5 4 , U ltr a s o n ic I n s p e c tio n .
20
MIL-STD-2219, Fusion Welding for Aerospace A p p lic a tio n s .
18
MI L - S T D - 2 9 , D r a w in g Re q u ir e me n ts f o r Me c h a n ic a l S p r in g s .
92
MI L - S T D - 4 0 3 , P r e p a r a tio n f o r a n d I n s ta lla tio n o f Riv e ts a n d Screws, Rocket and Missile Structures.
18
MI L - S T D - 6 4 5 , D ip Br a z in g o f A lu min u m A llo ys
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Specification MI L - T - 7 1 3 , T w in e , F ib r o u s ; I mp r e g n a te d , L a c in g a n d T yin g .
22
MI L - W - 4 6 1 3 2 , E le c tr o n ic Be a m W e ld in g .
18
MS 3 3 5 3 7 , I n s e r t, S c r e w T h r e a d , H e lic a l Co il, Co a r s e a n d F in e T h r e a d , S ta n d a r d D ime n s io n s f o r .
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MS 5 1 8 3 5 , I n s e r ts a n d S tu d s , L o c k e d I n - K e y L o c k e d , H o le D ime n s io n s f o r a n d A s s e mb ly o f .
21
N - 8 8 - 1 0 1 1 7 , N a tio n a l T e c h n ic a l I n f o r ma tio n S e r v ic e — O u t g a s s i n g D a t a C o mp i l a t i o n o f S p a c e c r a f t M a t e r i a l s .
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N A S 1 0 0 0 0 , N A D o c u me n ts P r e p a r a tio n a n d Ma in te n a n c e in S I ( Me t r i c ) U n i t s .
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N A S A Re f e r e n c e P u b lic a tio n , RP - 1 1 2 4 , N o v e mb e r 1 9 9 0 , O u t g a s s i n g D a t a f o r S e l e c t in g S p a c e c r a f t M a t e r i a l s . NBS IR81-229, A Technical Briefing on the Initial Graphics Exchange.
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N H B 5 3 0 0 . 4 ( 3 A - 1 ) 1 9 7 6 , Re q u ir e me n ts f o r S o ld e r e d E le c tr ic a l Co n n e c tio n s .
18
N MI 8 0 1 0 . 2 A , U s e o f th e Me tr ic S ys te m o f Me a s u r e me n t in N A S A P r o g r a ms .
86
N S T S 0 7 7 0 0 , S ys te m D e s c r ip tio n a n d D e s ig n D a ta , Intervehicular Activities.
108
Q Q - B- 6 5 4 , Br a z in g A llo ys , S ilv e r .
18
Q Q - C- 3 2 0 , Ch r o miu m P la tin g ( E le c tr o d e p o s ite d ) .
18
Q Q - P - 3 5 , P a s s iv a tio n T r e a tme n ts f o r Co r r o s io n - Re s is ta n t Steel.
19
Q Q - P - 4 1 6 , P la tin g , Ca d miu m ( E le c tr o d e p o s ite d ) .
18
Q Q - S - 3 6 5 , S ilv e r P la tin g ( E le c tr o d e p o s ite d ) , G e n e r a l Re q u ir e me n ts f o r .
19
Q Q - S - 5 7 1 , S o ld e r , T in A llo y, T in - L e a d A llo y, a n d L e a d Alloy.
18
S a f e ty Re g u la tio n s 4 9 - CF R7 1 - 7 8 , Co mme r c e Co mmis s io n S a f e ty Re g u la tio n s .
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APPENDIX A. DESIGN REVIEW DOs AND DON'Ts A ll d r a w in g s s h o u ld a d h e r e to th e f o llo w in g g u id e lin e s : a.
D i m e n s i o n p a r t s c o r r e c t l y . D ime n s io n in g s h a ll b e to p r ima r y o r ma tin g s u r f a c e s . U n w a n t e d b u i l d u p o f t o l e r a nc e s b e t w e e n ma t i n g s u r f a c e s s h o u l d b e a v o id e d . D i me n s i o n s t o i n s i g n if i c a n t t h e o r e t i c a l c e n t e r l i n e s c a n r e s u l t i n mis t a k e s b y t h e ma c h i n i s t , a s w e l l a s t h e i n s p e c t o r s , b e c a u s e o f t h e mu l t i p l e a d d itio n s a n d s u b tr a c tio n s r e q u ir e d to lo c a te th e f e a tu r e in r e la tio n to o th e r f e a tu r e s . W h e n e v e r p o s s ib le , d ime n s io n s s h o u ld b e le f t to r ig h t a n d b o tto m to t o p ( Q u a d r a n t I , a l l p o s i t i v e n u mb e r s ) o r f r o m d a t u ms e s t a b l i s h e d b y d e s i g n r e q u ir e me n ts .
b . D o n o t d e t a i l w e l d m e n t p a r t s s e p a r a t e l y . S i n c e e a c h p a r t ma y b e f a b r i c a t e d b y a d if f e r e n t ma n u f a c tu r e r , th e r e q u ir e d to le r a n c in g typ ic a lly c a n n o t b e me t, r e s u ltin g in d e la ys a n d a d d itio n a l c o s t. D if f e r e n t p a r ts o f a w e ld me n t s h o u ld b e d r a w n o n a n I n s e p a r a b le A s s e mb ly D r a w in g ( F ig u r e 2 0 o n p a g e 4 4 ) s o th a t t h e o v e r a l l a s s e mb l y t o l e r a n c i n g i s t h e r e s p o n s i b i l i t y o f a s i n g l e ma n u f a c t u r e r . c.
I m p l i e d d a t u m s a r e n o l o n g e r a l l o w e d . W h e n e v e r p o s s i b l e , s e l e c t d a t u ms th a t a r e f u n c tio n a l to th e p a r t. A d a tu m s h o u ld a lw a ys b e a s s ig n e d to a p h y s i c a l s u r f a c e o r a f e a t u r e o f s i z e . W h e n u s i n g t r u e p o s i t i o n d i me n s i o n i n g ( b a s ic d ime n s io n s ) , th e d ime n s io n s f r o m th e f e a tu r e to o th e r e d g e s a n d its p e r p e n d i c u l a r i t y r e l a t i o n s h i p t o a s ur f a c e mu s t b e i d e n t i f i e d w i t h d a t u m le tte r s . T h e c o mb in e d u s a g e o f p o s itio n a l to le r a n c in g w ith p lu s a n d min u s me t h o d s a s r e l a t e d t o b a s i c d i me n s i o n ed p a t t e r n s i s d i s c o n t i n u e d a n d r e p l a c e d w ith th e c o mp o s ite to le r a n c in g me th o d . Re f e r to A N S I Y 1 4 . 5 M- 1 9 8 2 , “ D ime n s io n in g a n d T o le r a n c in g . ” Note: A l t h o u g h t h e r e i s n o r e q u i r e me n t t h a t a l l h o l e s b e t r u e p o s i t i o n e d , i t i s p r e f e r r e d th a t h o le p a tte r n s b e tr u e p o s itio n e d , r e g a r d le s s o f u s e , s in c e to le r a n c in g s p e c if ie d in th e tr u e p o s itio n b lo c k is th e c o n tr o llin g f a c to r .
d. Drawings for parts produced using templates must be properly d i m e n s i o n e d a n d t o l e r a n c e d . L a c k o f d ime n s io n in g ma y r e s u lt in in a d e q u a te s tr e s s a n a lys is , f it c h e c k in g , a n d /o r in s p e c tio n . E n g in e e r in g a n d to o lin g d r a w in g s s h o u ld b e d ime n s io n e d a lik e a n d r e la te d to o n e a n o th e r . Re f e r to to o lin g r e q u ir e d n o te s in “ D ime n s io n N ote s , ” p a r a g r a p h 2 . 4 . 4 . 1 o n p a g e 1 6 . e.
U s e t h e l i s t o f m a t e r i a l f o r m a t c o r r e c t l y . T h e a s s e mb ly n u mb e r d o e s n o t g e t a n i t e m n u mb e r . W h i l e t h e ma t e r i a l i s p r o p e r l y a n i t e m o n t h e L i s t o f Ma te r ia l, o n e n d p r o d u c t d r a w in g s , th e r e is n o n e e d to s p e c if y e ith e r th e d r a w in g n u mb e r o r a n ite m n u mb e r in th e L is t o f Ma te r ia l if th e r e is o n ly o n e p a r t o r ma t e r i a l . A n i t e m w i t h t h e s a me ma t e r i a l a n d s p e c i f i c a t i o n r e q u ir e s o n ly o n e i t e m n u mb e r a n d “ A / R ” ( a s r e q u ir e d ) a s a q u a n t i t y . T h e v a r i o u s ma t e r i a l s i z e s r e q u i r e d a r e i n d i c a t e d o n t h e f i e l d o f t h e d r a w i n g , a s i s t h e c a s e o f in s e p a r a b le a s s e mb lie s ( w e ld me n ts , r iv e te d p a r ts , e tc . ) . D a s h n u mb e r s a r e r e q u ir e d o n ly w h e n th e r e is a “ s h o w n ” ( o d d n u mb e r ) a n d “ o p p o s ite ” ( e v e n n u mb e r ) , w h e n th e r e is mo r e th a n o n e a s s e mb ly v e r s io n , o r w h e n th e d r a w in g i s o f a t a b u la t e d t y p e ( r e f e r t o t y p e s o f d r a w i n g s ) . M u l t i d e t a i l d r a w i n g s a r e n o t a l l o w e d ( r e f e r t o “ D e t a i l D r a w in g , ” p a r a g r a p h 4 . 3 o n p a g e 4 1 f o r e x p la n a tio n ) .
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f.
D o n o t u s e “ S K ” ( s h o r t f o r s k e t c h ) o n a n y d r a win g t h a t is u s e d t o m a n u f a c t u r e a p a r t . U s e o n ly G S F C d r a w in g n u mb e r s w h e n u s in g th e G S F C d r a w in g f o r ma t; c o n tr a c to r d r a w in g n u mb e r s a r e u s e d o n th e c o n tr a c to r 's d r a w i n g f o r ma t . T h e M e c h a n ic a l E n g in e e r in g Br a n c h d o e s n o t c h e c k o r g iv e a p p r o v a l f o r d r a w in g s p r o d u c e d o n c o n tr a c to r f o r ma t. Co n tr a c ts s h o u ld s p e c if y th a t th e c o n tr a c to r s h a ll s u p p ly c o p ie s o f c o mp a n y s p e c if ic a tio n s w h e n u s in g c o n tr a c to r f o r ma ts .
g . S p e c i f y l o w - o u t g a s s i n g m a t e r i a l s . U s e lo w - o u tg a s s in g f ilm lu b r ic a n ts f o r s p a c e f l i g h t h a r d w a r e w h e r e d i s a s s e mb l y i s l i k e l y a n d / o r g a l l i n g o f l i k e ma te r ia ls is p o s s ib le . Re f e r to N A S A RP - 1 1 2 4 , N o v e mb e r 1 9 9 0 ( o r la te r ) , O u t g a s s i n g D a t a f o r S e l e c t i n g S p a c e c r a f t M a t e r i a l s , o r to S e c tio n 1 0 , p a r a g r a p h 1 0 . 6 . 1 , p a g e 9 5 o f t h i s ma n u a l , “ O u t g a s s i n g o f S p a c e c r a f t Materials.” h . S p e c i f y t h e i d e n t i f i c a t i o n o f p a r t s . T o ma i n t a i n t r a c e a b i l i t y , a l l p a r t s s h o u l d b e id e n tif ie d b y in k s ta mp in g w ith th e G S F C d r a w in g n u mb e r , r a th e r th a n b y b a g g in g a n d ta g g in g . U s e o n ly lo w - o u tg a s s in g in k ( s p e c if y o r ig in a l s o u r c e ) a n d d o n o t o v e r c o a t. D o n o t s te e l s ta mp e n g r a v e , o r e tc h o n f lig h t h a r d w a r e t o p r e v e n t ma t e r i a l s t r e s s c o n c e n t r a t i o n s. I d e n t i c a l p a r t s w i t h d i f f e r e n t u s e s s h o u ld b e s e r ia liz e d . i.
Specify the original manufacturer source of supply and complete address. L i s t t h e o r i g i n a l s o u r c e a n d c o mp l e t e a d d r e s s i n t h e G e n e r a l N o t e s , a n d f l a g them to the List of Material or Parts List.
j.
S p e c if y r e g a r d le s s o f f e a t u r e s ize wh e n a p p ly in g t o f ix e d lo c a t io n s . Positional tolerance should be specified as “Regardless of Feature Size” when a p p lyin g to th r e a d in s e r ts , ta p p e d h o le lo c a tio n s , a n d s lip f it d e s ig n s .
k . S p e c i f y l o o s e t o l e r a n c e s w h e r e p o s s i b l e . T h e u s e o f th e tr u e p o s itio n me th o d o f d ime n s io n in g s h o u ld n o t b e mis ta k e n f o r a tig h te r to le r a n c in g c o n tr o l s ys te m. T r u e p o s itio n to le r a n c in g c a n b e a s lo o s e a s th e a p p lic a tio n s h a ll a l l o w . L o o s e t o l e r a n c e s ma k e i n s pe c t i o n e a s i e r a n d a l l o w f e w e r r e j e c t e d p a r ts . l.
S p e c i f y r a d i i a n d c h a m f e r s . E d g e r a d ii, in - p la n e c o r n e r r a d ii, a n d p r o tr u s io n c h a mf e r s mu s t b e s p e c i f i e d t o s p a c e f l ig h t s t a n d a r d s i z e r eq u i r e me n t s . R e f e r t o J o h n s o n S p a c e C e n t e r d o c u me n t N S T S 0 7 7 0 0 , V o l u me X I V , A p p e n d i x 9 , “ S y s t e m D e s c r i p t i o n a n d D e s i g n D a t a I n t e r v e h i c u la r A c t i v i t i e s , ” S e c t i o n 5 . 5 , “ C r e w E q u i p me n t S a f e t y, ” f o r s i z e r e q u i r eme n ts . S p e c i f y r a d i i a t t h e b o t t o m o f c o u n te r b o r e s to p r e v e n t s h a r p c o r n e r s , w h ic h c o u ld d e v e lo p in to s tr e s s c r a c k s , p a r tic u la r ly o n f lig h t p a r ts .
m. S p e c i f y i n t e r f e r e n c e r a n g e o n l y f o r p r e s s f i t s . O n ly th e a mo u n t “ . 0 0 0 X to . 0 0 0 X i n t e r f e r e n c e ” s h o u l d b e s t a te d n e x t t o t h e i t e m c a l l o u t . n . S p e c i f y a s f e w r e f e r e n c e d i m e n s i o n s a s p o s s i b l e . T o o ma n y r e f e r e n c e d ime n s io n s ma k e c h e c k in g , in s p e c tio n , a n d c o s t e s tima tin g mo r e d if f ic u lt. o . S p e c i f y p r o j e c t e d t o l e r a n c e zo n e d i m e n s i o n s w h e r e a p p l i c a b l e . A d d a p r o j e c te d to le r a n c e z o n e d ime n s io n to th e tr u e p o s itio n to le r a n c e w h e n s p e c if yin g th r e a d e d in s e r ts , ta p p e d h o le s , o r d o w e l p in s . Re f e r to A N S I Y 1 4 . 5 M- 1 9 8 2 .
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p . S p e c i f y f a s t e n e r t o r q u e r e q u i r e m e n t s . T h e s e r e q u i r e me n t s ma y r e f e r t o a p r o j e c t- d e v e lo p e d s p e c if ic a tio n n u mb e r , o r f a s te n e r s iz e a n d to r q u e r e q u ir e me n ts c a n b e ta b u la te d in th e G e n e r a l N o te s a n d f la g g e d to ite m c a llo u ts in th e f ie ld o f th e d r a w in g . q . A v o i d d o u b l e f i x a t i o n s . A p a tte r n o f c o u n te r s u n k h o le s in o n e p a r t a n d ta p p e d h o le s in th e ma tin g p a r t le a v e s n o to le r a n c in g f o r e ith e r p a r t, r e s u ltin g in b e n d in g s tr e s s e s in th e s c r e w . I f th e s itu a tio n s h a ll a llo w , c o u n te r b o r e o n e of the parts and use a pan head screw. If not, drill out the second part and use a n u t i n p l a c e o f t a p p e d h o l e s . M a t c h ed d r i l l i n g s h o u l d b e a v o i d e d b e c a u s e o f loss of interchangeability. r.
A v o i d s e v e r e g a l l i n g b e t w e e n l i k e m a t e r i a l s . T o a v o id s e v e r e g a llin g in CRES-to-CRES fastener applications, consider the following possibilities: U s e o f p h o s p h o r b r o n z e in s e r ts . U s e o f d r y f ilm lu b r ic a n t p e r MI L - G - 4 6 0 1 0 , L u b r ic a n t, S o lid F ilm, H e a t Cu r e d , Co r r o s io n I n h ib itin g ( f o r CRE S in s e r ts a n d n u ts ) . U s e o f b la c k o x id e c o a tin g p e r MI L - C- 1 3 9 2 4 ( f o r b o lts a n d s c r e w s ) .
s.
Avoid the use of internal, external, or split-ring lock washers. These types of washers are not used on aerospace flight projects for several reasons; the w o r s t is p o s s ib le p a r tic u la te c o n ta min a tio n .
t.
Avoid using silver-plated hardware around electronic applications. This c a n c a u s e c o n t a mi n a t i o n p a r t i c l e s . H o w e v e r , i t i s a c c e p t a b l e f o r a l l o t h e r a p p lic a tio n s .
u. Design a part so it can be made with the least amount of machine setups possible.
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INDEX F o r a n a lp h a b e tic a l ( n u me r ic a l) lis tin g o f th e S ta n d a r d s a n d S p e c if ic a tio n s lis te d in th is ma n u a l, s e e S e c tio n 1 0 . 9 , p a g e 1 0 1 .
A
D
Abbreviations ............................... 11, 12 AFBMA ............................................. 12 AGMA .............................................. 12 AGMA standard quality....................... 16 A l t e r e d p a r t s . . . . . . . . . . . . . . . . s e e P a r ts — V e n d o r Altered vendor part drawings ................... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . s e e D r a w in g s ANSI ................................................ 12 Archiving .......................................... 80 ASME ............................................... 12 A s s e mb l y d r a w i n g s . . . . . . . . . . . . . . s e e D r a w in g s Associated lists .................................. 80 ASTM ............................................... 13 AWS ............................................ 13, 92 B B a s i c d i me n s i o n s . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . s e e D ime n s io n in g — T r u e p o s itio n Brazing ............................................. 18 C C A D . . . . . . . . . . . . . . . s e e Co mp u te r - a id e d d e s ig n C A D - p r o d u c e d d r a w i n g s . . . . . . s e e D r a w in g s Certification logs ............................... 80 C h a mf e r s . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 0 5 Coating Notes .......................... see Notes C o mp o s i t e ma t e r i a l d r a w i n g . . . . . . . . . . . . . . . . 5 6 C o mp u t e r - a i d e d d e s i g n . . . . . . . . . . . . . . . . . . . 3 3 , 8 0 . . . . s e e a l s o Drawings—Computer-aided design Data files Media .......................................... 81 Presentation of data ......................... 80 Specification data ............................ 81 C o mp u t e r - g e n e r a t e d d a t a Presentation of ................................ 80 C o n f i g u r a t i o n ma n ag e me n t o f f i c e r . . . . . . . . 5 8 C o n f i g u r a t i o n ma n a g e r . . . . . . . . . . . . . . . . . . . 5 8 , 8 0 C o n t r a c t o r d e s i g n a ct i v i t y d r a w i n g s . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . s e e D r a w in g s C o n v e r s i o n o f d i me n s i o n s . . . . . . . . . . . . . . . . . . . 8 6 C r o s s - h a t c h i n g s y mb o l . . . . . . . . . . . . . . . . . . . . . . . . 3 5
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Datum ..................................... 30, 45, 82 I mp l i e d . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 0 4 Design references ................................ 82 D e s i g n r e v i e w D o s a n d D o n 't s . . . . . . . . . . . . 1 0 4 Design Selection Guide ........................ 14 D e t a i l d r a w i n g s . . . . . . . . . . . . . . . . . . . s e e D r a w in g s Details ............................................... 37 Identification ................................... 37 Locating .......................................... 38 D i a g r a ms Electrical and electronic ................... 43 D i me n s i o n n o t e s . . . . . . . . . . . . . . . . . . . . . . . . s e e N o t e s D i me n s i o n a l t o l e r a n c e n o t e s . . . . . . . s e e N o t e s D ime n s io n in g M e t r i c . . . . . . . . . . . . . s e e Me tr ic d ime n s io n in g S t a t e me n t s o n . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 2 True position .................... 82, 104, 105 D ime n s io n in g a n d to le r a n c in g . . 8 2 , 8 4 , 1 0 4 Metric ............................................. 83 Practices ......................................... 82 D i me n s i o n s . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ... 15, 16, 24, 25, 28, 55, 82, 84, 88, 104 Conversion of .................................. 86 Projected tolerance zone ................. 106 Reference ...................................... 105 D o c u me n t a t i o n ma n a g e me n t . . . . . . . . . . . . . . . . . . 7 9 Double fixations ............................... 106 Drafting practices ............................... 25 D r a w i n g e l e me n t s . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 Drawing flow chart............ see Flow chart D r a w i n g f o r ma t . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 0 Drawing Interchange File ..................... 81 Drawing notes ...........................see Notes D r a w i n g n u mb e r . . . . . . . . . . 1 , 7 , 1 0 , 4 1 , 5 8 , 6 0 Source control ................................. 53 Specification control ........................ 54 D r a w i n g r e v i s i o n s . . . . . . . . . . . . . . . s e e Re v is io n s Drawing sizes ...................................... 3 Drawing title ...................................... 11 Drawing tree ....................................... 42 D r a w in g s Archiving ........................................ 80 A s s e mb l y . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 0 , 5 3 , 5 4 CAD-produced .................................. 8 C o mp u t e r - a i d e d d e s i g n . . . . . . . . . . . . . . . . . . . . . . 8 0
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Developing and using .................... 81 Revisions ..................................... 80 Contractor design activity .................. 1 Detail ............................................. 41 E l e c t r i c a l / E le c t r o n i c . . . . . . . . . . . . . . . . . . . . . . . . 4 3 Engineering .................... 1, 16, 58, 104 F o r ma t . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 0 G o v e r n me n t D e s i g n A c t i v i t y . . . . . . . . . . . . . . . 1 I n s e p a r a b l e a s s e mb l y . . . . . . . . . . . . . . . . . . . . . . . 4 4 I n s t a l l a t i o n a s s e mb l y . . . . . . . . . . . . . 4 5 , 5 3 , 5 4 Interface control ......................... 46, 47 Manufacturing ................................. 54 Matched-set .................................... 48 M e c h a n i c a l s c h e ma t i c . . . . . . . . . . . . . . . . . . . . . . 4 9 Modification ................................... 50 Mo n o d e t a i l . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 4 Multidetail ...................................... 41 Multisheet .................... 3, 4, 15, 38, 65 Notes ................................... see Notes N u mb e r i n g s y s t e m . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 8 One view ........................................ 25 Outline .................................50, 51, 54 Pencil............................................. 33 Positioning ..................................... 33 Redrawn or replaced ........................ 67 Scale .............................................. 32 Source control ............................ 52, 53 Specification control ..............52, 53, 54 Standard part .................................. 54 Tabulated ....................................... 54 Three view ...................................... 25 Tooling ................................8, 55, 104 Two view ........................................ 25 Types of ......................................... 39 Vendor part Altered ........................................ 39 Selected ....................................... 39 Zoned .......................................... 4, 38 D X F . . . . . . . . . . . . s e e D r a w in g I n te r c h a n g e F ile
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EFFECTIVE SERIAL ........................ 63 EO NO. ........................................... 63 F o r ma t s a mp l e . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 2 G e n e r a l r e q u i r e me n t s . . . . . . . . . . . . . . . . . . . . . . . . 6 2 INITIATED ..................................... 63 ISSUED BY ..................................... 63 NEXT ASSEMBLY ........................... 62 N u mb e r . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 4 PARTS IN PROCESS ........................... . . . . s e e E n g in e e r in g o r d e r — D is p o s itio n PROGRAM ...................................... 62 REASON ......................................... 62 REV ................................................ 62 REVIEWED ..................................... 63 S H E E T ___O F ___ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 3 TITLE ............................................. 62 TYPE OF EO ................................... 63 USED ON ........................................ 62 Engineering parts list ........... see Parts list E O . . . . . . . . . . . . . . . . . . . . . . . . . s e e E n g in e e r in g o r d e r E P L . . . . . . . . . . . . . . . . s e e P a r ts lis t— E n g in e e r in g F Fastener torque ................................. 106 Federal Cataloging Program ................. 54 F e d e r a l I t e m I d e n t i f i c a t i o n N u mb e r . . . . . . . 5 4 Federal standards and specifications ...... 93 FIIN ..................................................... . s e e F e d e r a l I t e m I d e n t i f i c a t i o n N u mb e r F i n d n u mb e r . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 4 A p p l i c a t i o n a n d l i mi t a t i o n . . . . . . . . . . . . . . . . . 7 6 Definition ........................................ 76 D r a w i n g r e q u i r e me n t s . . . . . . . . . . . . . . . . . . . . . . . 7 7 System of identification .................... 76 F i n d o r I t e m n u mb e r . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . s e e e i t h e r F in d n u mb e r o r I te m n u mb e r F i n d o r i t e m n u mb e r i n g . . . . . . s e e N u mb e r in g Flow chart For drawings .................................... 79
E E l e c t r i c a l a n d e l e c tr o n i c d i a g r a ms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . s e e D i a g r a ms E l e c t r i c a l a n d e l e c tr o n i c s y mb o l s . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . s e e S ymb o ls E l e c t r i c a l / e l e c t ro n i c d r a w i n g s . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . s e e D r a w in g s E n g i n e e r i n g d r a w i n g s . . . . . . . . . . s e e D r a w in g s Engineering order .......................... 62, 64 APPROVED .................................... 63 Archiving ....................................... 80 DESCRIPTION ................................ 63 Disposition ..................................... 63 DRAWING...................................... 62
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G Galling ............................................ 106 G o v e r n me n t D e s i g n A c t i v i t y D r a w i n g s . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . s e e D r a w in g s H Heat treating notes ....................see Notes I IEEE .................................................. 13 IGES.....................................................
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. . . . . . . . . . . . . . . . . . . . . . . . . . . . . s e e I n i t i a l G r a p h ic s ........................ Exchange Specification I L . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . s e e I n d e x lis t Index list ........................................... 68 Continuation sheet ........................... 75 Entries ........................................ 74 F o r ma t . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 4 Cover sheet ..................................... 69 Entries ................................... 69, 70 F o r ma t . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 9 Definitions ..................................... 68 Re q u ir e me n ts A d d i n g i t e ms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 9 D e l e t i n g i t e ms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 9 L i s t f o r ma t s . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 9 List preparation ............................ 68 Revision identification .................. 69 I n d u s tr ia l s ta n d a r d s a n d s p e c if ic a tio n s . . 9 5 I n f o r ma t i o n M a n a g eme n t D i v i s i o n . . . . . . . . 5 8 I n f o r ma t i o n a l n o t e s . . . . . . . . . . . . . . . . . . s e e N o t e s I n i t i a l G r a p h ic s E x c h a n g e S p e c i f i c a t i o n 8 1 Ink lines ................................... see Lines I n s e p a r a b l e a s s e mb l y d r a w i n g s . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . s e e D r a w in g s Inseparable parts ....................... see Parts Inside rounding ...................................... . . . . . . . . . . . . . . . . . . . s e e Me tr ic d ime n s io n in g — ........................... Rounding—Precision Inspection notes ....................... see Notes I n s t a l l a t i o n a s s e mb l y d r a w i n g s . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . s e e D r a w in g s I n t e r f a c e c o n t r o l d r a w i n g s . . . . s e e D r a w in g s Interference range ............................. 105 International System of Units .................. ..................................................... 83 . . . . . . . . . . . . . . . . . . . . . . s e e a l s o 'S I ' a n d 'Me t r i c ' Introduction ......................................... 1 ISO ................................................... 13 I t e m n u mb e r . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 4 A p p l i c a t i o n a n d l i mi t a t i o n . . . . . . . . . . . . . . . . 7 6 Definition ....................................... 76 D r a w i n g r e q u i r e me n t s . . . . . . . . . . . . . . . . . . . . . . 7 7 System of identification ................... 76 I t e m n u mb e r i n g . . . . . . . . . . . . . . . . . s e e N u mb e r in g J J roll size ............................................ 3 J o i n i n g me t h o d n o t e s . . . . . . . . . . . . . . . . s e e N o t e s L Lay (of a surface) ............................... 90 L e t t e r i n g a n d N u me r a l s . . . . . . . . . . . . . . . . . . . . . . . 3 1 Heights........................................... 32
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Style ............................................... 31 Library Services Branch ....................... 58 Lines ................................................. 25 Conventions ............................... 26, 27 Ink ................................................. 25 Pencil ............................................. 27 Plotted ............................................ 25 Types ........................................ 26, 27 Break ........................................... 28 Center .......................................... 27 Cutting-plane ................................ 30 Datum .......................................... 30 D i me n s i o n . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 8 Extension ..................................... 30 Hidden ......................................... 30 Leaders ........................................ 28 Outlines ....................................... 30 Phantom ....................................... 29 Sectioning .................................... 29 Stitch ........................................... 30 Viewing-plane ............................... 30 Visible ......................................... 30 List of Material ......................... 8, 10, 14 Entries ............................................ 78 F o r ma t . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 8 , 1 0 4 R e q u i r e me n t s i n . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 4 LM ........................... see List of Material Local character notes .................see Notes Lock washers .................................... 106 L o w - o u t g a s s i n g ma t e r i a l s . . . . . . . . . . . . . . . . . . . 1 0 5 M M a t c h e d - s e t d r a w i n g s . . . . . . . . . . s e e D r a w in g s M a t e r ia l Conventions ..................................... 35 Low-outgassing .............................. 105 Outgassing....................................... 93 Mechanical Engineering Branch ............ 58 M e c h a n i c a l s c h e ma t i c d i a g r a m d r a w i n g s . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . s e e D r a w in g s Metric .................................... see also SI Me tr ic d ime n s io n in g Ro u n d in g B a s i c d i me n s i o n s . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 7 General rules ................................ 86 Precision ................................ 88, 89 T o l e r a n c e d d i me n s i o n s . . . . . . . . . . . . . . . . . . . 8 8 Unit conversions .............................. 86 Metric system ..................................... 83 M i l i t a r y s t a n d a r d s an d s p e c i f i c a t i o n s . . . . . 9 6 M o d i f i c a t i o n d r a w i n g s . . . . . . . . . s e e D r a w in g s M u l t i s h e e t d r a w i n g s . . . . . . . . . . . . s e e D r a w in g s
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N NAS .................................................. 13 NASA standards and specifications ...... 98 National Bureau of Standards index ...... 93 NEMA ............................................... 13 N o me n c l a t u r e . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 1 Notes ................................................ 25 Coating .......................................... 18 D i me n s i o n . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 6 D i me n s i o n a l t o l e r a n c e . . . . . . . . . . . . . . . . . . . . . . 2 4 E x a mp l e s . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 6 General .......................................... 15 Heat treating ................................... 17 I n f o r ma t i o n a l . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 3 Inspection ....................................... 20 J o i n i n g me t h o d . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 8 Local character .......................... 15, 23 Location ......................................... 15 Miscellaneous ................................. 21 N u mb e r i n g o f . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 6 Plating ........................................... 18 Surface preparation.......................... 19 Testing ........................................... 20 Threaded inserts Cleaning and installation ............... 21 Warning note .................................. 15 NSA .................................................. 13 NTIS ................................................. 93 N u mb e r i n g . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 8 Find ............................................... 60 Item ............................................... 60 Parts .............................................. 59 N u mb e r i n g o f n o t e s . . . . . . . . . . . . . . . . . . s e e N o t e s
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N u mb e r i n g . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 9 Separable ........................................ 40 Vendor ................................. 52, 53, 59 Altered ................................... 39, 59 Selected ................................. 39, 59 W e l d me n t . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 0 4 Parts list ...................................... 14, 68 Continuation sheet ............................ 73 Entries ......................................... 72 F o r ma t . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 2 S u p p l e me n t a r y h e a d i n g l i s t . . . . . . . . . . . . . 7 3 Co v e r s h e e t Entries ................................... 69, 70 F o r ma t . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 9 Definitions ...................................... 68 Engineering .......................... 59, 60, 80 Preferred ......................................... 14 Re q u ir e me n ts A d d i n g i t e ms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 9 D e l e t i n g i t e ms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 9 L i s t f o r ma t s . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 9 List preparation ............................. 68 Revision identification ................... 69 P e n c i l d r a w i n g s . . . . . . . . . . . . . . . . . . s e e D r a w in g s Pencil lines .............................. see Lines Picturization ....................................... 33 PL ...................................... see Parts list Plating notes.............................see Notes Plotted lines ............................. see Lines Positioning ................................... 33, 35 Precision rounding ................................. . . . . . . s e e Me tr ic d ime n s io n in g — Ro u n d in g Press fits .......................................... 105 Projected tolerance zone .................... 106 Projected views ........................ see Views
O Order of precedence...... see Specifications Orthographic projection ...................... 25 Outgassing L o w - o u t g a s s i n g ma t e r i a l s . . . . . . . . . . . . . . . . 1 0 5 O f s p a c e c r a f t ma t e r i a l s . . . . . . . . . . . . . . . . . . . . 9 3 O u t l i n e d r a w i n g s . . . . . . . . . . . . . . . . . s e e D r a w in g s Outlines Invisible ......................................... 34 Visible ........................................... 34 P P a r t n u mb e r . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 2 , 5 9 P a r t P o s i t i o n i n g . . . . . . . . . . . . . . . s e e P o s itio n in g Parts D i me n s i o n s . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 0 4 Identification of ............................. 105 Inseparable ..................................... 41
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R Radii ............................................... 105 Regardless of Feature Size ................. 105 Revision block ............................ 4, 9, 65 APPROVAL ...................................... 9 DATE .............................................. 9 DESCRIPTION.................................. 9 S a mp l e s . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 , 6 6 SYM ................................................ 9 ZONE .............................................. 9 Revisions ........................................... 65 Identification ................................... 65 Me t h o d s . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 5 Multisheet drawings ......................... 65 Recording ........................................ 65 Redrawn or replaced drawings ........... 67 Rotated views .......................... see Views Rounding ........................................... 86
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R o u n d i n g : . . . . s e e a l s o Me tr ic d ime n s io n in g S SAE .................................................. 13 Scale ................................................. 32 Sections ............................................ 34 Identification .................................. 37 Locating ......................................... 38 Security classification ................... 10, 15 S e l e c t e d p a r t s . . . . . . . . . . . . . . s e e P a r ts — V e n d o r S e l e c t e d v e n d o r p ar t d r a w i n g s . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . s e e D r a w in g s Separable parts ......................... see Parts S h e e t n u mb e r i n g . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 S I . . . s e e a ls o I n t e r n a t i o n a l S y s t e m o f U n i t s U n i t s a n d s y mb o l s . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 3 Silver-plated hardware ....................... 106 Soldering...................................... 18, 89 S o u r c e c o n t r o l d r a w i n g s . . . . . . . s e e D r a w in g s Space Transportation System ............... 20 Specification callouts ......................... 24 S p e c i f i c a t i o n c o n tr o l d r a w i n g s . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . s e e D r a w in g s Specifications .................................... 82 Order of precedence ......................... 60 Subsequent changes ......................... 24 Thread....................................... 91, 92 Specifications index ............................... . . s e e S ta n d a r d s a n d s p e c if ic a tio n s in d e x S t a n d a r d p a r t d r a w i n g . . . . . . . . . . s e e D r a w in g s Standards .......................................... 82 Order of precedence ......................... 60 S t a n d a r d s a n d s p e c i f ic a t i o n s i n d e x . . . . . . . 9 3 Federal ........................................... 93 Industrial........................................ 95 Military .......................................... 96 NASA ............................................ 98 National Bureau of Standards ............ 93 S ta n d a r d s a n d s p e c if ic a tio n s n u me r ic a l index .............................................. 98 STS ....... see Space Transportation System S u p p o r tin g d o c u me n ta tio n N u mb e r i n g . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 8 Surface preparation notes .......... see Notes Surface roughness Control of ....................................... 90 Surface texture ................................... 90 Standards........................................ 90 S y mb o l s . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 0 S ymb o ls Cross-hatching ................................ 35 E l e c t r i c a l / E le c t r o n i c . . . . . . . . . . . . . . . . . . . . . . . . 4 3 Welding.......................................... 92 W ir i n g . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 3
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T T a b u l a t e d d r a w i n g s . . . . . . . . . . . . . s e e D r a w in g s T e mp l a t e s . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 5 , 8 2 , 1 0 4 Testing notes ............................see Notes Third-angle orthographic projection ...... 25 Thread specifications ..................... 91, 92 Threaded inserts—Cleaning and installation notes ....................see Notes Title block ............................ 4, 9, 32, 33 APPROVED ...................................... 7 CHECKED ........................................ 7 CODE .............................................. 7 DATE .............................................. 7 DESCRIPTION.................................. 9 DESIGNER ....................................... 7 Drawing No. ..................................... 7 DRAWN ........................................... 7 EXAMINATION ................................ 8 FLIGHT HARDWARE ........................ 8 HARDNESS TESTING ....................... 8 ITEM NO. ........................................ 8 MATERIAL ...................................... 9 MATERIAL SPEC. ............................ 9 METRIC ........................................... 8 NEXT ASSY ..................................... 8 PART NO. ........................................ 8 REQD .............................................. 8 S a mp l e . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 SCALE ............................................. 7 S H ___O F ___ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 Software used ................................... 8 TITLE .............................................. 7 USED ON ......................................... 7 WT .................................................. 7 T o le r a n c e Blo c k Metric ............................................. 86 Tolerances .................. 24, 82, 84, 88, 104 Loose ............................................ 105 Metric ............................................. 86 T o le r a n c in g True position ................................. 105 T o o l i n g d r a w i n g s . . . . . . . . . . . . . . . . s e e D r a w in g s Tooling fixtures .................................. 55 Transported views .................... see Views T r u e p o s i t i o n d i me n s i o n i n g . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . s e e D ime n s io n in g U U n i t n u mb e r p r i n c i p l e . . . . . . . . . . . . . . . . . . . . . . . . . . 5 8 U n i t r o u n d i n g . . . . . . . . . . . . . . . . . . . . . s e e Ro u n d in g
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V Vapor degreasing ............................... 20 Vendor part .............................. see Parts V e n d o r p a r t d r a w i n g s . . . . . . . . . . . s e e D r a w in g s Views .......................................... 25, 36 Identification .................................. 37 Locating ......................................... 38 Projected ........................................ 36 Rotated........................................... 36 Sectional ........................................ 34 Designation .................................. 35 Positioning .................................. 35 Transported .................................... 36 W Waviness (of a surface) ....................... 90 Welding ............................................ 18 General .......................................... 92 Notes ............................................. 18 Specification callouts....................... 92 S y mb o l s . . . . . . . . . . . . . . . . . . . . . s e e a l s o S ymb o ls Location significance .................... 92 W e l d me n t s . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 4 , 1 0 4 W ir i n g s y mb o l s . . . . . . . . . . . . . . . . . . . . s e e S ymb o ls Z Zoning ........................................... 4, 10
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