Drill Bit Info
This document was uploaded by user and they confirmed that they have the permission to share it. If you are author or own the copyright of this book, please report to us by using this DMCA report form. Report DMCA
Overview
Download & View Drill Bit Info as PDF for free.
More details
- Words: 2,043
- Pages:
JOBNAME: No Job Name PAGE: 20 SESS: 838 OUTPUT: Tue Dec 6 21:58:56 2005 /
General Drill Bit Information Tap Drill Sizes for Cutting Taps See pages 2283-2284 for drill bit sizes for thread-forming and pipe taps. For tap sizes not shown use the following formula: Tap Major Dia. minus One Pitch Length=Tap Drill Size. For example for 3⁄8⬙-16 Thread: 0.375−0.0625=0.3125. Tap drill size 0.3125=5⁄16⬙, the closest drill size. Probable Tap Drill % of Size Size Thread For Machine Screw and 0-80 .......... 56 .............. 74% 0-80 .......... 3⁄64⬙............ 71% 1⁄ 64⬙ ............ 1.45 mm .. 71% 1⁄ 64⬙ ............ 53 .............. 59% 1-72 .......... 53 .............. 67% 1-72 .......... 1⁄16⬙............ 50% 2-56 .......... 51 .............. 74% 2-56 .......... 50 .............. 62% 2-64 .......... 50 .............. 70% 2-64 .......... 1.8 mm..... 66% 3-48 .......... 5⁄64⬙............ 70% 3-56 .......... 46 .............. 69% 3-56 .......... 45 .............. 65% 4-40 .......... 44 .............. 74% 4-40 .......... 43 .............. 65% For Metric Threads 1.6 × 0.35 1.25 mm .. 69% 1.8 × 0.35 1.45 mm .. 69% 2 × 0.40 ..... 1⁄16⬙............ 72% 2 × 0.40 ..... 1.6 mm..... 69% 2.2 × 0.45 1.75 mm .. 70% 2.5 × 0.45 2.05 mm .. 69% 2.5 × 0.45 46 .............. 67% 3 × 0.50 ..... 40 .............. 70% 3 × 0.50 ..... 2.5 mm..... 68% 3.5 × 0.60 33 .............. 72% 3.5 × 0.60 2.9 mm..... 68% 3.5 × 0.60 32 .............. 63% 4 × 0.70 ..... 30 .............. 73% 4 × 0.70 ..... 3.3 mm..... 69%
Probable Probable Probable Drill % of Tap Drill % of Tap Drill % of Tap Size Thread Size Size Thread Size Size Thread Size Fractional Threads 4-48 ........ 2.35 mm 72% 10-32 ........ 5⁄32⬙............ 75% 5⁄16⬙-24 ..... I ................. 67% 4-48 ........ 42 .............. 61% 10-32 ........ 21 .............. 68% 3⁄8⬙-16 ....... 5⁄16⬙............ 72% 5-40 ........ 40 .............. 76% 12-24 ........ 11⁄64⬙ .......... 75% 3⁄8⬙-16 ....... O ............... 68% 5-40 ........ 39 .............. 71% 12-24 ........ 17 .............. 73% 3⁄8⬙-24 ....... 21⁄64⬙ .......... 79% 5-44 ........ 38 .............. 72% 12-28 ........ 16 .............. 77% 3⁄8⬙-24 ....... 8.4 mm..... 74% 5-44 ........ 37 .............. 63% 12-28 ........ 15 .............. 70% 3⁄8⬙-24 ....... Q ............... 71% 6-32 ........ 36 .............. 72% 12-28 ........ 14 .............. 66% 7⁄16⬙-14 ..... 23⁄64⬙ .......... 79% 6-32 ........ 35 .............. 63% 1⁄4⬙-20 ....... 9 .............. 77% 7⁄16⬙-14 ..... U................ 70% 6-40 ........ 34 .............. 75% 1⁄4⬙-20 ....... 8 .............. 73% 7⁄16⬙-20 ..... W ............... 72% 6-40 ........ 33 .............. 69% 1⁄4⬙-20 ....... 7 .............. 70% 7⁄16⬙-20 ..... 25⁄64⬙ .......... 65% 8-32 ........ 29 .............. 62% 1⁄4⬙-20 ....... 13⁄64⬙ .......... 66% 1⁄2⬙-13 ....... 27⁄64⬙ .......... 73% 8-36 ........ 29 .............. 70% 1⁄4⬙-28 ....... 3 .............. 72% 1⁄2⬙-20 ....... 29⁄64⬙ .......... 65% 8-36 ........ 3.5 mm .. 65% 5⁄16⬙-18 ..... F ................ 72% 9⁄16⬙-12 ..... 31⁄64⬙ .......... 68% 10-24 ........ 26 .............. 74% 5⁄16⬙-18 ..... G ............... 66% 9⁄16⬙-18 ..... 1⁄2⬙ ............. 80% 10-24 ........ 25 .............. 69% 5⁄16⬙-24 ..... H................ 78% 5⁄8⬙-11 ....... 17⁄32⬙ .......... 75% 4 × 0.75 ..... 3.3 mm .. 72% 4.5 × 0.75 3.75 mm 74% 4.5 × 0.75 26 mm ...... 70% 5 × 0.50 15 mm ...... 66% 5 × 0.80 ..... 4.2 mm .. 69% 6 × 0.50 ..... 7⁄32⬙............ 69% 6 × 0.75 ..... 5.3 mm .. 72% 6 × 1.00 ..... 10 .............. 76% 6 × 1.00 ..... 5 mm ...... 70% 6.3 × 1.00 5.4 mm .. 70% 7 × 1.00 ..... A ................ 74% 7 × 1.00 ..... 6 mm ...... 70% 7 × 1.00 ..... B ................ 66% 8 × 0.50 ..... 19⁄64⬙ .......... 72%
8 × 0.75 .. 7.3 mm .. 72% 8 × 1.00 .. 7.1 mm .. 70% 8 × 1.25 .. 6.7 mm .. 74% 8 × 1.25 .. 6.8 mm .. 68% 9 × 1.00 .. 8.1 mm .. 70% 9 × 1.25 .. 7.9 mm .. 68% 10 × 1.00 .. T ................ 70% 10 × 1.25 .. S ................ 72% 10 × 1.50 .. Q ............... 75% 10 × 1.50 .. 8.5 mm .. 71% 11 × 1.00 .. X ................ 71% 11 × 1.50 .. 9.6 mm .. 72% 12 × 1.00 .. 7⁄16⬙............ 69% 12 × 1.25 .. 11 mm ...... 62%
12 × 1.50 .. 27⁄64⬙ .......... 66% 12 × 1.75 .. 10.2 mm .. 75% 12 × 1.75 .. 13⁄32⬙ .......... 69% 14 × 1.00 .. 33⁄64⬙ .......... 70% 14 × 1.25 .. 13 mm 62% 14 × 1.50 .. 1⁄2⬙ ............. 67% 15 14 × 2.00 .. ⁄32⬙ .......... 76% 14 × 2.00 .. 12 mm ...... 76% 16 × 1.00 .. 19⁄32⬙ .......... 71% 16 × 1.50 .. 37⁄64⬙ .......... 68% 16 × 2.00 .. 35⁄64⬙ .......... 76% 16 × 2.00 .. 14 mm ...... 72% 18 × 1.50 .. 21⁄32⬙ .......... 69% 18 × 2.50 .. 5⁄8⬙ ............. 66%
Tap Size
Drill Size
Probable % of Thread
⁄ ⬙-18 ..... 9⁄16⬙ ......... 80% ⁄ ⬙-10 ..... 21⁄32⬙ ........ 68% 3⁄ 4⬙-16 ..... 11⁄ 16⬙ ........ 71% 7⁄ 8⬙-9 ....... 49⁄ 64⬙ ........ 72% 7⁄ 8⬙-14 ..... 51⁄ 64⬙ ........ 79% 1⬙-8 ........... 7⁄8⬙ ........... 73% 1⬙-8 ........... 57⁄64⬙ ........ 64% 1⬙-12 ......... 59⁄64⬙ ........ 67% 1⬙-14 ......... 59⁄64⬙ ........ 78% 1⬙-14 ......... 15⁄16⬙ ........ 61% 11⁄8⬙-7 ....... 63⁄64⬙ ........ 72% 11⁄8⬙-7 ....... 1⬙ ............... 64% 11⁄8⬙-12 ..... 11⁄32⬙ ......... 80% 11⁄8⬙-12 ..... 13⁄64⬙ ......... 66% 58 34
20 × 1.00 .. 3⁄4⬙ ........... 74% 20 × 1.50 .. 47⁄64⬙ ........ 70% 20 × 2.50 .. 17.5 mm .. 73% 22 × 1.50 .. 13⁄16⬙ ........ 71% 22 × 2.50 .. 25⁄32⬙ ........ 67% 24 × 1.50 .. 57⁄64⬙ ........ 72% 24 × 2.00 .. 7⁄8⬙ ........... 69% 24 × 3.00 .. 21 mm ...... 73% 26 × 1.50 .. 31⁄32⬙ ........ 72% 27 × 1.50 .. 1⬙ ............... 75% 27 × 2.00 .. 1⬙ ............... 62% 27 × 3.00 .. 61⁄64⬙ ........ 72% 30 × 1.50 .. 11⁄8⬙ ........... 74%
Drill Size Decimal Equivalents Drill Dec. Drill Dec. Drill Dec. Size Equiv. Size Equiv. Size Equiv. Fractional Drill Sizes 1⁄ 64⬙ ........ 0.0156⬙ 9⁄ 64⬙ ........ 0.1406⬙ 17⁄ 64⬙ ...... 0.2656⬙ 1⁄ 32⬙ ........ 0.0312⬙ 5⁄ 32⬙ ........ 0.1562⬙ 9⁄ 32⬙ ........ 0.2812⬙ 3⁄ 64⬙ ........ 0.0469⬙ 11⁄ 64⬙ ...... 0.1719⬙ 19⁄ 64⬙ ...... 0.2969⬙ 1⁄ 16⬙ ........ 0.0625⬙ 3⁄ 16⬙ ........ 0.1875⬙ 5⁄ 16⬙ ........ 0.3125⬙ 5⁄ 64⬙ ........ 0.0781⬙ 13⁄ 64⬙ ...... 0.2031⬙ 21⁄ 64⬙ ...... 0.3281⬙ 3⁄ 32⬙ ........ 0.0938⬙ 7⁄ 32⬙ ........ 0.2188⬙ 11⁄ 32⬙ ...... 0.3438⬙ 7⁄ 64⬙ ........ 0.1094⬙ 15⁄ 64⬙ ...... 0.2344⬙ 23⁄ 64⬙ ...... 0.3594⬙ 1⁄ 8⬙ ......... 0.1250⬙ 1⁄ 4⬙ ......... 0.2500⬙ 3⁄ 8⬙ ......... 0.3750⬙ Letter Drill Sizes A ............ 0.2340⬙ E ............ 0.2500⬙ I ............. 0.2720⬙ B ............ 0.2380⬙ F ............ 0.2570⬙ J ............ 0.2770⬙ C............ 0.2420⬙ G ........... 0.2610⬙ K ............ 0.2810⬙ D ............ 0.2460⬙ H............ 0.2660⬙ Wire Gauge Drill Sizes 1 .......... 0.2280⬙ 11 .......... 0.1910⬙ 21 .......... 0.1590⬙ 2 .......... 0.2210⬙ 12 .......... 0.1890⬙ 22 .......... 0.1570⬙ 3 .......... 0.2130⬙ 13 .......... 0.1850⬙ 23 .......... 0.1540⬙ 4 .......... 0.2090⬙ 14 .......... 0.1820⬙ 24 .......... 0.1520⬙ 5 .......... 0.2055⬙ 15 .......... 0.1800⬙ 25 .......... 0.1495⬙ 6 .......... 0.2040⬙ 16 .......... 0.1770⬙ 26 .......... 0.1470⬙ 7 .......... 0.2010⬙ 17 .......... 0.1730⬙ 27 .......... 0.1440⬙ 8 .......... 0.1990⬙ 18 .......... 0.1695⬙ 28 .......... 0.1405⬙ 9 .......... 0.1960⬙ 19 .......... 0.1660⬙ 29 .......... 0.1360⬙ 10 .......... 0.1935⬙ 20 .......... 0.1610⬙ 30 .......... 0.1285⬙ Metric Drill Sizes—Sizes are given in millimeters. 1.00 ...... 0.0394⬙ 1.90 ...... 0.0748⬙ 3.00 ...... 0.1181⬙ 1.05 ...... 0.0413⬙ 1.95 ...... 0.0768⬙ 3.10 ...... 0.1220⬙ 1.10 ...... 0.0433⬙ 2.00 ...... 0.0787⬙ 3.20 ...... 0.1260⬙ 1.15 ...... 0.0453⬙ 2.05 ...... 0.0807⬙ 3.30 ...... 0.1299⬙ 1.20 ...... 0.0472⬙ 2.10 ...... 0.0827⬙ 3.40 ...... 0.1339⬙ 1.25 ...... 0.0492⬙ 2.15 ...... 0.0846⬙ 3.50 ...... 0.1378⬙ 1.30 ...... 0.0512⬙ 2.20 ...... 0.0866⬙ 3.60 ...... 0.1417⬙ 1.35 ...... 0.0531⬙ 2.25 ...... 0.0886⬙ 3.70 ...... 0.1457⬙ 1.40 ...... 0.0551⬙ 2.30 ...... 0.0906⬙ 3.80 ...... 0.1496⬙ 1.45 ...... 0.0571⬙ 2.35 ...... 0.0925⬙ 3.90 ...... 0.1535⬙ 1.50 ...... 0.0591⬙ 2.40 ...... 0.0945⬙ 4.00 ...... 0.1575⬙ 1.55 ...... 0.0610⬙ 2.45 ...... 0.0965⬙ 4.10 ...... 0.1614⬙ 1.60 ...... 0.0630⬙ 2.50 ...... 0.0984⬙ 4.20 ...... 0.1654⬙ 1.65 ...... 0.0650⬙ 2.60 ...... 0.1024⬙ 4.30 ...... 0.1693⬙ 1.70 ...... 0.0669⬙ 2.70 ...... 0.1063⬙ 4.40 ...... 0.1732⬙ 1.75 ...... 0.0689⬙ 2.80 ...... 0.1102⬙ 4.50 ...... 0.1772⬙ 1.80 ...... 0.0709⬙ 2.90 ...... 0.1142⬙ 4.60 ...... 0.1811⬙ 1.85 ...... 0.0728⬙
Drill Size
Dec. Equiv.
Drill Size
Dec. Drill Equiv. Size
⁄ ⬙ 0.5156⬙ ⁄ ⬙ 0.5312⬙ 35⁄ 64⬙ ...... 0.5469⬙ 9⁄ 16⬙ ........ 0.5625⬙ 37⁄ 64⬙ ...... 0.5781⬙ 19⁄ 32⬙ ...... 0.5938⬙ 39⁄ 64⬙ ...... 0.6094⬙ 5⁄ 8⬙ ......... 0.6250⬙
Dec. Drill Equiv. Size
⁄ ⬙ 0.6406⬙ ⁄ ⬙ 0.6562⬙ 43⁄ 64⬙ ...... 0.6719⬙ 11⁄ 16⬙ ...... 0.6875⬙ 45⁄ 64⬙ ...... 0.7031⬙ 23⁄ 32⬙ ...... 0.7188⬙ 47⁄ 64⬙ ...... 0.7344⬙ 3⁄ 4⬙ ......... 0.7500⬙
Dec. Equiv.
Drill Size
Dec. Equiv.
25 64 ...... 13 32 ......
⁄ ⬙ 0.3906⬙ ⁄ ⬙ 0.4062⬙ 27⁄ 64⬙ ...... 0.4219⬙ 7⁄ 16⬙ ........ 0.4375⬙ 29⁄ 64⬙ ...... 0.4531⬙ 15⁄ 32⬙ ...... 0.4688⬙ 31⁄ 64⬙ ...... 0.4844⬙ 1⁄ 2⬙ ......... 0.5000⬙
33 64 ...... 17 32 ......
L ............ 0.2900⬙ M ........... 0.2950⬙ N............ 0.3020⬙
O ........... 0.3160⬙ R ............ 0.3390⬙ U............ 0.3680⬙ P ............ 0.3230⬙ S ............ 0.3480⬙ V ............ 0.3770⬙ Q ........... 0.3320⬙ T ............ 0.3580⬙ W ........... 0.3860⬙
X ............ 0.3970⬙ Y ............ 0.4040⬙ Z ............ 0.4130⬙
31 .......... 0.1200⬙ 32 .......... 0.1160⬙ 33 .......... 0.1130⬙ 34 .......... 0.1110⬙ 35 .......... 0.1100⬙ 36 .......... 0.1065⬙ 37 .......... 0.1040⬙ 38 .......... 0.1015⬙ 39 .......... 0.0995⬙ 40 .......... 0.0980⬙
41 .......... 0.0960⬙ 42 .......... 0.0935⬙ 43 .......... 0.0890⬙ 44 .......... 0.0860⬙ 45 .......... 0.0820⬙ 46 .......... 0.0810⬙ 47 .......... 0.0785⬙ 48 .......... 0.0760⬙ 49 .......... 0.0730⬙ 50 ........ 0.0700⬙
51 .......... 0.0670⬙ 52 .......... 0.0635⬙ 53 ........ 0.0595⬙ 54 .......... 0.0550⬙ 55 .......... 0.0520⬙ 56 .......... 0.0465⬙ 57 .......... 0.0430⬙ 58 .......... 0.0420⬙ 59 .......... 0.0410⬙ 60 .......... 0.0400⬙
61 .......... 0.0390⬙ 62 .......... 0.0380⬙ 63 .......... 0.0370⬙ 64 .......... 0.0360⬙ 65 .......... 0.0350⬙ 66 .......... 0.0330⬙ 67 .......... 0.0320⬙ 68 .......... 0.0310⬙ 69 .......... 0.0292⬙ 70 .......... 0.0280⬙
71 .......... 0.0260⬙ 72 .......... 0.0250⬙ 73 .......... 0.0240⬙ 74 .......... 0.0225⬙ 75 .......... 0.0210⬙ 76 .......... 0.0200⬙ 77 .......... 0.0180⬙ 78 .......... 0.0160⬙ 79 .......... 0.0145⬙ 80 .......... 0.0135⬙
4.70 ...... 0.1850⬙ 4.80 ...... 0.1890⬙ 4.90 ...... 0.1929⬙ 5.00 ...... 0.1968⬙ 5.10 ...... 0.2008⬙ 5.20 ...... 0.2047⬙ 5.30 ...... 0.2087⬙ 5.40 ...... 0.2126⬙ 5.50 ...... 0.2165⬙ 5.60 ...... 0.2205⬙ 5.70 ...... 0.2244⬙ 5.80 ...... 0.2283⬙ 5.90 ...... 0.2323⬙ 6.00 ...... 0.2362⬙ 6.10 ...... 0.2402⬙ 6.20 ...... 0.2441⬙ 6.30 ...... 0.2480⬙
6.40 ...... 0.2520⬙ 6.50 ...... 0.2559⬙ 6.60 ...... 0.2598⬙ 6.70 ...... 0.2638⬙ 6.80 ...... 0.2677⬙ 6.90 ...... 0.2717⬙ 7.00 ...... 0.2756⬙ 7.10 ...... 0.2795⬙ 7.20 ...... 0.2835⬙ 7.30 ...... 0.2874⬙ 7.40 ...... 0.2913⬙ 7.50 ...... 0.2953⬙ 7.60 ...... 0.2992⬙ 7.70 ...... 0.3031⬙ 7.80 ...... 0.3071⬙ 7.90 ...... 0.3110⬙ 8.00 ...... 0.3150⬙
8.10 ...... 0.3189⬙ 8.20 ...... 0.3228⬙ 8.30 ...... 0.3268⬙ 8.40 ...... 0.3307⬙ 8.50 ...... 0.3346⬙ 8.60 ...... 0.3386⬙ 8.70 ...... 0.3425⬙ 8.80 ...... 0.3465⬙ 8.90 ...... 0.3504⬙ 9.00 ...... 0.3543⬙ 9.10 ...... 0.3583⬙ 9.20 ...... 0.3622⬙ 9.30 ...... 0.3661⬙ 9.40 ...... 0.3701⬙ 9.50 ...... 0.3740⬙ 9.60 ...... 0.3780⬙ 9.70 ...... 0.3819⬙
9.80 .... 0.3858⬙ 9.90 .... 0.3898⬙ 10.00 .... 0.3937⬙ 10.20 .... 0.4016⬙ 10.50 .... 0.4134⬙ 10.80 .... 0.4252⬙ 11.00 .... 0.4331⬙ 11.20 .... 0.4409⬙ 11.50 .... 0.4528⬙ 11.80 .... 0.4646⬙ 12.00 .... 0.4724⬙ 12.20 .... 0.4803⬙ 12.50 .... 0.4921⬙ 13.00 .... 0.5118⬙ 13.50 .... 0.5315⬙ 14.00 .... 0.5512⬙ 14.50 .... 0.5709⬙
15.00 .... 0.5906⬙ 15.50 .... 0.6102⬙ 16.00 .... 0.6299⬙ 16.50 .... 0.6496⬙ 17.00 .... 0.6693⬙ 17.50 .... 0.6890⬙ 18.00 .... 0.7087⬙ 19.00 .... 0.7480⬙ 20.00 .... 0.7874⬙ 21.00 .... 0.8268⬙ 22.00 .... 0.8661⬙ 24.00 .... 0.9449⬙ 26.00 .... 1.0236⬙ 27.00 .... 1.0630⬙ 28.00 .... 1.1024⬙ 29.00 .... 1.1417⬙ 30.00 .... 1.1811⬙ 31.00 .... 1.2204⬙
41 64 ...... 21 32 ......
57⁄ 64⬙ .... 0.8906⬙ ⁄ ⬙ 0.7656⬙ 29⁄ 32⬙ .... 0.9062⬙ ⁄ ⬙ 0.7812⬙ 51⁄ 64⬙ ...... 0.7969⬙ 59⁄ 64⬙ .... 0.9219⬙ 13⁄ 16⬙ ...... 0.8125⬙ 15⁄ 16⬙ .... 0.9375⬙ 53⁄ 64⬙ ...... 0.8281⬙ 61⁄ 64⬙ .... 0.9531⬙ 27⁄ 32⬙ ...... 0.8438⬙ 31⁄ 32⬙ .... 0.9688⬙ 55⁄ 64⬙ ...... 0.8594⬙ 63⁄ 64⬙ .... 0.9844⬙ 7⁄ 8⬙ ......... 0.8750⬙ 1⬙ ........... 1.0000⬙ 49 64 ...... 25 32 ......
2313
General Drill Bit Information Tap Drill Sizes for Cutting Taps See pages 2283-2284 for drill bit sizes for thread-forming and pipe taps. For tap sizes not shown use the following formula: Tap Major Dia. minus One Pitch Length=Tap Drill Size. For example for 3⁄8⬙-16 Thread: 0.375−0.0625=0.3125. Tap drill size 0.3125=5⁄16⬙, the closest drill size. Probable Tap Drill % of Size Size Thread For Machine Screw and 0-80 .......... 56 .............. 74% 0-80 .......... 3⁄64⬙............ 71% 1⁄ 64⬙ ............ 1.45 mm .. 71% 1⁄ 64⬙ ............ 53 .............. 59% 1-72 .......... 53 .............. 67% 1-72 .......... 1⁄16⬙............ 50% 2-56 .......... 51 .............. 74% 2-56 .......... 50 .............. 62% 2-64 .......... 50 .............. 70% 2-64 .......... 1.8 mm..... 66% 3-48 .......... 5⁄64⬙............ 70% 3-56 .......... 46 .............. 69% 3-56 .......... 45 .............. 65% 4-40 .......... 44 .............. 74% 4-40 .......... 43 .............. 65% For Metric Threads 1.6 × 0.35 1.25 mm .. 69% 1.8 × 0.35 1.45 mm .. 69% 2 × 0.40 ..... 1⁄16⬙............ 72% 2 × 0.40 ..... 1.6 mm..... 69% 2.2 × 0.45 1.75 mm .. 70% 2.5 × 0.45 2.05 mm .. 69% 2.5 × 0.45 46 .............. 67% 3 × 0.50 ..... 40 .............. 70% 3 × 0.50 ..... 2.5 mm..... 68% 3.5 × 0.60 33 .............. 72% 3.5 × 0.60 2.9 mm..... 68% 3.5 × 0.60 32 .............. 63% 4 × 0.70 ..... 30 .............. 73% 4 × 0.70 ..... 3.3 mm..... 69%
Probable Probable Probable Drill % of Tap Drill % of Tap Drill % of Tap Size Thread Size Size Thread Size Size Thread Size Fractional Threads 4-48 ........ 2.35 mm 72% 10-32 ........ 5⁄32⬙............ 75% 5⁄16⬙-24 ..... I ................. 67% 4-48 ........ 42 .............. 61% 10-32 ........ 21 .............. 68% 3⁄8⬙-16 ....... 5⁄16⬙............ 72% 5-40 ........ 40 .............. 76% 12-24 ........ 11⁄64⬙ .......... 75% 3⁄8⬙-16 ....... O ............... 68% 5-40 ........ 39 .............. 71% 12-24 ........ 17 .............. 73% 3⁄8⬙-24 ....... 21⁄64⬙ .......... 79% 5-44 ........ 38 .............. 72% 12-28 ........ 16 .............. 77% 3⁄8⬙-24 ....... 8.4 mm..... 74% 5-44 ........ 37 .............. 63% 12-28 ........ 15 .............. 70% 3⁄8⬙-24 ....... Q ............... 71% 6-32 ........ 36 .............. 72% 12-28 ........ 14 .............. 66% 7⁄16⬙-14 ..... 23⁄64⬙ .......... 79% 6-32 ........ 35 .............. 63% 1⁄4⬙-20 ....... 9 .............. 77% 7⁄16⬙-14 ..... U................ 70% 6-40 ........ 34 .............. 75% 1⁄4⬙-20 ....... 8 .............. 73% 7⁄16⬙-20 ..... W ............... 72% 6-40 ........ 33 .............. 69% 1⁄4⬙-20 ....... 7 .............. 70% 7⁄16⬙-20 ..... 25⁄64⬙ .......... 65% 8-32 ........ 29 .............. 62% 1⁄4⬙-20 ....... 13⁄64⬙ .......... 66% 1⁄2⬙-13 ....... 27⁄64⬙ .......... 73% 8-36 ........ 29 .............. 70% 1⁄4⬙-28 ....... 3 .............. 72% 1⁄2⬙-20 ....... 29⁄64⬙ .......... 65% 8-36 ........ 3.5 mm .. 65% 5⁄16⬙-18 ..... F ................ 72% 9⁄16⬙-12 ..... 31⁄64⬙ .......... 68% 10-24 ........ 26 .............. 74% 5⁄16⬙-18 ..... G ............... 66% 9⁄16⬙-18 ..... 1⁄2⬙ ............. 80% 10-24 ........ 25 .............. 69% 5⁄16⬙-24 ..... H................ 78% 5⁄8⬙-11 ....... 17⁄32⬙ .......... 75% 4 × 0.75 ..... 3.3 mm .. 72% 4.5 × 0.75 3.75 mm 74% 4.5 × 0.75 26 mm ...... 70% 5 × 0.50 15 mm ...... 66% 5 × 0.80 ..... 4.2 mm .. 69% 6 × 0.50 ..... 7⁄32⬙............ 69% 6 × 0.75 ..... 5.3 mm .. 72% 6 × 1.00 ..... 10 .............. 76% 6 × 1.00 ..... 5 mm ...... 70% 6.3 × 1.00 5.4 mm .. 70% 7 × 1.00 ..... A ................ 74% 7 × 1.00 ..... 6 mm ...... 70% 7 × 1.00 ..... B ................ 66% 8 × 0.50 ..... 19⁄64⬙ .......... 72%
8 × 0.75 .. 7.3 mm .. 72% 8 × 1.00 .. 7.1 mm .. 70% 8 × 1.25 .. 6.7 mm .. 74% 8 × 1.25 .. 6.8 mm .. 68% 9 × 1.00 .. 8.1 mm .. 70% 9 × 1.25 .. 7.9 mm .. 68% 10 × 1.00 .. T ................ 70% 10 × 1.25 .. S ................ 72% 10 × 1.50 .. Q ............... 75% 10 × 1.50 .. 8.5 mm .. 71% 11 × 1.00 .. X ................ 71% 11 × 1.50 .. 9.6 mm .. 72% 12 × 1.00 .. 7⁄16⬙............ 69% 12 × 1.25 .. 11 mm ...... 62%
12 × 1.50 .. 27⁄64⬙ .......... 66% 12 × 1.75 .. 10.2 mm .. 75% 12 × 1.75 .. 13⁄32⬙ .......... 69% 14 × 1.00 .. 33⁄64⬙ .......... 70% 14 × 1.25 .. 13 mm 62% 14 × 1.50 .. 1⁄2⬙ ............. 67% 15 14 × 2.00 .. ⁄32⬙ .......... 76% 14 × 2.00 .. 12 mm ...... 76% 16 × 1.00 .. 19⁄32⬙ .......... 71% 16 × 1.50 .. 37⁄64⬙ .......... 68% 16 × 2.00 .. 35⁄64⬙ .......... 76% 16 × 2.00 .. 14 mm ...... 72% 18 × 1.50 .. 21⁄32⬙ .......... 69% 18 × 2.50 .. 5⁄8⬙ ............. 66%
Tap Size
Drill Size
Probable % of Thread
⁄ ⬙-18 ..... 9⁄16⬙ ......... 80% ⁄ ⬙-10 ..... 21⁄32⬙ ........ 68% 3⁄ 4⬙-16 ..... 11⁄ 16⬙ ........ 71% 7⁄ 8⬙-9 ....... 49⁄ 64⬙ ........ 72% 7⁄ 8⬙-14 ..... 51⁄ 64⬙ ........ 79% 1⬙-8 ........... 7⁄8⬙ ........... 73% 1⬙-8 ........... 57⁄64⬙ ........ 64% 1⬙-12 ......... 59⁄64⬙ ........ 67% 1⬙-14 ......... 59⁄64⬙ ........ 78% 1⬙-14 ......... 15⁄16⬙ ........ 61% 11⁄8⬙-7 ....... 63⁄64⬙ ........ 72% 11⁄8⬙-7 ....... 1⬙ ............... 64% 11⁄8⬙-12 ..... 11⁄32⬙ ......... 80% 11⁄8⬙-12 ..... 13⁄64⬙ ......... 66% 58 34
20 × 1.00 .. 3⁄4⬙ ........... 74% 20 × 1.50 .. 47⁄64⬙ ........ 70% 20 × 2.50 .. 17.5 mm .. 73% 22 × 1.50 .. 13⁄16⬙ ........ 71% 22 × 2.50 .. 25⁄32⬙ ........ 67% 24 × 1.50 .. 57⁄64⬙ ........ 72% 24 × 2.00 .. 7⁄8⬙ ........... 69% 24 × 3.00 .. 21 mm ...... 73% 26 × 1.50 .. 31⁄32⬙ ........ 72% 27 × 1.50 .. 1⬙ ............... 75% 27 × 2.00 .. 1⬙ ............... 62% 27 × 3.00 .. 61⁄64⬙ ........ 72% 30 × 1.50 .. 11⁄8⬙ ........... 74%
Drill Size Decimal Equivalents Drill Dec. Drill Dec. Drill Dec. Size Equiv. Size Equiv. Size Equiv. Fractional Drill Sizes 1⁄ 64⬙ ........ 0.0156⬙ 9⁄ 64⬙ ........ 0.1406⬙ 17⁄ 64⬙ ...... 0.2656⬙ 1⁄ 32⬙ ........ 0.0312⬙ 5⁄ 32⬙ ........ 0.1562⬙ 9⁄ 32⬙ ........ 0.2812⬙ 3⁄ 64⬙ ........ 0.0469⬙ 11⁄ 64⬙ ...... 0.1719⬙ 19⁄ 64⬙ ...... 0.2969⬙ 1⁄ 16⬙ ........ 0.0625⬙ 3⁄ 16⬙ ........ 0.1875⬙ 5⁄ 16⬙ ........ 0.3125⬙ 5⁄ 64⬙ ........ 0.0781⬙ 13⁄ 64⬙ ...... 0.2031⬙ 21⁄ 64⬙ ...... 0.3281⬙ 3⁄ 32⬙ ........ 0.0938⬙ 7⁄ 32⬙ ........ 0.2188⬙ 11⁄ 32⬙ ...... 0.3438⬙ 7⁄ 64⬙ ........ 0.1094⬙ 15⁄ 64⬙ ...... 0.2344⬙ 23⁄ 64⬙ ...... 0.3594⬙ 1⁄ 8⬙ ......... 0.1250⬙ 1⁄ 4⬙ ......... 0.2500⬙ 3⁄ 8⬙ ......... 0.3750⬙ Letter Drill Sizes A ............ 0.2340⬙ E ............ 0.2500⬙ I ............. 0.2720⬙ B ............ 0.2380⬙ F ............ 0.2570⬙ J ............ 0.2770⬙ C............ 0.2420⬙ G ........... 0.2610⬙ K ............ 0.2810⬙ D ............ 0.2460⬙ H............ 0.2660⬙ Wire Gauge Drill Sizes 1 .......... 0.2280⬙ 11 .......... 0.1910⬙ 21 .......... 0.1590⬙ 2 .......... 0.2210⬙ 12 .......... 0.1890⬙ 22 .......... 0.1570⬙ 3 .......... 0.2130⬙ 13 .......... 0.1850⬙ 23 .......... 0.1540⬙ 4 .......... 0.2090⬙ 14 .......... 0.1820⬙ 24 .......... 0.1520⬙ 5 .......... 0.2055⬙ 15 .......... 0.1800⬙ 25 .......... 0.1495⬙ 6 .......... 0.2040⬙ 16 .......... 0.1770⬙ 26 .......... 0.1470⬙ 7 .......... 0.2010⬙ 17 .......... 0.1730⬙ 27 .......... 0.1440⬙ 8 .......... 0.1990⬙ 18 .......... 0.1695⬙ 28 .......... 0.1405⬙ 9 .......... 0.1960⬙ 19 .......... 0.1660⬙ 29 .......... 0.1360⬙ 10 .......... 0.1935⬙ 20 .......... 0.1610⬙ 30 .......... 0.1285⬙ Metric Drill Sizes—Sizes are given in millimeters. 1.00 ...... 0.0394⬙ 1.90 ...... 0.0748⬙ 3.00 ...... 0.1181⬙ 1.05 ...... 0.0413⬙ 1.95 ...... 0.0768⬙ 3.10 ...... 0.1220⬙ 1.10 ...... 0.0433⬙ 2.00 ...... 0.0787⬙ 3.20 ...... 0.1260⬙ 1.15 ...... 0.0453⬙ 2.05 ...... 0.0807⬙ 3.30 ...... 0.1299⬙ 1.20 ...... 0.0472⬙ 2.10 ...... 0.0827⬙ 3.40 ...... 0.1339⬙ 1.25 ...... 0.0492⬙ 2.15 ...... 0.0846⬙ 3.50 ...... 0.1378⬙ 1.30 ...... 0.0512⬙ 2.20 ...... 0.0866⬙ 3.60 ...... 0.1417⬙ 1.35 ...... 0.0531⬙ 2.25 ...... 0.0886⬙ 3.70 ...... 0.1457⬙ 1.40 ...... 0.0551⬙ 2.30 ...... 0.0906⬙ 3.80 ...... 0.1496⬙ 1.45 ...... 0.0571⬙ 2.35 ...... 0.0925⬙ 3.90 ...... 0.1535⬙ 1.50 ...... 0.0591⬙ 2.40 ...... 0.0945⬙ 4.00 ...... 0.1575⬙ 1.55 ...... 0.0610⬙ 2.45 ...... 0.0965⬙ 4.10 ...... 0.1614⬙ 1.60 ...... 0.0630⬙ 2.50 ...... 0.0984⬙ 4.20 ...... 0.1654⬙ 1.65 ...... 0.0650⬙ 2.60 ...... 0.1024⬙ 4.30 ...... 0.1693⬙ 1.70 ...... 0.0669⬙ 2.70 ...... 0.1063⬙ 4.40 ...... 0.1732⬙ 1.75 ...... 0.0689⬙ 2.80 ...... 0.1102⬙ 4.50 ...... 0.1772⬙ 1.80 ...... 0.0709⬙ 2.90 ...... 0.1142⬙ 4.60 ...... 0.1811⬙ 1.85 ...... 0.0728⬙
Drill Size
Dec. Equiv.
Drill Size
Dec. Drill Equiv. Size
⁄ ⬙ 0.5156⬙ ⁄ ⬙ 0.5312⬙ 35⁄ 64⬙ ...... 0.5469⬙ 9⁄ 16⬙ ........ 0.5625⬙ 37⁄ 64⬙ ...... 0.5781⬙ 19⁄ 32⬙ ...... 0.5938⬙ 39⁄ 64⬙ ...... 0.6094⬙ 5⁄ 8⬙ ......... 0.6250⬙
Dec. Drill Equiv. Size
⁄ ⬙ 0.6406⬙ ⁄ ⬙ 0.6562⬙ 43⁄ 64⬙ ...... 0.6719⬙ 11⁄ 16⬙ ...... 0.6875⬙ 45⁄ 64⬙ ...... 0.7031⬙ 23⁄ 32⬙ ...... 0.7188⬙ 47⁄ 64⬙ ...... 0.7344⬙ 3⁄ 4⬙ ......... 0.7500⬙
Dec. Equiv.
Drill Size
Dec. Equiv.
25 64 ...... 13 32 ......
⁄ ⬙ 0.3906⬙ ⁄ ⬙ 0.4062⬙ 27⁄ 64⬙ ...... 0.4219⬙ 7⁄ 16⬙ ........ 0.4375⬙ 29⁄ 64⬙ ...... 0.4531⬙ 15⁄ 32⬙ ...... 0.4688⬙ 31⁄ 64⬙ ...... 0.4844⬙ 1⁄ 2⬙ ......... 0.5000⬙
33 64 ...... 17 32 ......
L ............ 0.2900⬙ M ........... 0.2950⬙ N............ 0.3020⬙
O ........... 0.3160⬙ R ............ 0.3390⬙ U............ 0.3680⬙ P ............ 0.3230⬙ S ............ 0.3480⬙ V ............ 0.3770⬙ Q ........... 0.3320⬙ T ............ 0.3580⬙ W ........... 0.3860⬙
X ............ 0.3970⬙ Y ............ 0.4040⬙ Z ............ 0.4130⬙
31 .......... 0.1200⬙ 32 .......... 0.1160⬙ 33 .......... 0.1130⬙ 34 .......... 0.1110⬙ 35 .......... 0.1100⬙ 36 .......... 0.1065⬙ 37 .......... 0.1040⬙ 38 .......... 0.1015⬙ 39 .......... 0.0995⬙ 40 .......... 0.0980⬙
41 .......... 0.0960⬙ 42 .......... 0.0935⬙ 43 .......... 0.0890⬙ 44 .......... 0.0860⬙ 45 .......... 0.0820⬙ 46 .......... 0.0810⬙ 47 .......... 0.0785⬙ 48 .......... 0.0760⬙ 49 .......... 0.0730⬙ 50 ........ 0.0700⬙
51 .......... 0.0670⬙ 52 .......... 0.0635⬙ 53 ........ 0.0595⬙ 54 .......... 0.0550⬙ 55 .......... 0.0520⬙ 56 .......... 0.0465⬙ 57 .......... 0.0430⬙ 58 .......... 0.0420⬙ 59 .......... 0.0410⬙ 60 .......... 0.0400⬙
61 .......... 0.0390⬙ 62 .......... 0.0380⬙ 63 .......... 0.0370⬙ 64 .......... 0.0360⬙ 65 .......... 0.0350⬙ 66 .......... 0.0330⬙ 67 .......... 0.0320⬙ 68 .......... 0.0310⬙ 69 .......... 0.0292⬙ 70 .......... 0.0280⬙
71 .......... 0.0260⬙ 72 .......... 0.0250⬙ 73 .......... 0.0240⬙ 74 .......... 0.0225⬙ 75 .......... 0.0210⬙ 76 .......... 0.0200⬙ 77 .......... 0.0180⬙ 78 .......... 0.0160⬙ 79 .......... 0.0145⬙ 80 .......... 0.0135⬙
4.70 ...... 0.1850⬙ 4.80 ...... 0.1890⬙ 4.90 ...... 0.1929⬙ 5.00 ...... 0.1968⬙ 5.10 ...... 0.2008⬙ 5.20 ...... 0.2047⬙ 5.30 ...... 0.2087⬙ 5.40 ...... 0.2126⬙ 5.50 ...... 0.2165⬙ 5.60 ...... 0.2205⬙ 5.70 ...... 0.2244⬙ 5.80 ...... 0.2283⬙ 5.90 ...... 0.2323⬙ 6.00 ...... 0.2362⬙ 6.10 ...... 0.2402⬙ 6.20 ...... 0.2441⬙ 6.30 ...... 0.2480⬙
6.40 ...... 0.2520⬙ 6.50 ...... 0.2559⬙ 6.60 ...... 0.2598⬙ 6.70 ...... 0.2638⬙ 6.80 ...... 0.2677⬙ 6.90 ...... 0.2717⬙ 7.00 ...... 0.2756⬙ 7.10 ...... 0.2795⬙ 7.20 ...... 0.2835⬙ 7.30 ...... 0.2874⬙ 7.40 ...... 0.2913⬙ 7.50 ...... 0.2953⬙ 7.60 ...... 0.2992⬙ 7.70 ...... 0.3031⬙ 7.80 ...... 0.3071⬙ 7.90 ...... 0.3110⬙ 8.00 ...... 0.3150⬙
8.10 ...... 0.3189⬙ 8.20 ...... 0.3228⬙ 8.30 ...... 0.3268⬙ 8.40 ...... 0.3307⬙ 8.50 ...... 0.3346⬙ 8.60 ...... 0.3386⬙ 8.70 ...... 0.3425⬙ 8.80 ...... 0.3465⬙ 8.90 ...... 0.3504⬙ 9.00 ...... 0.3543⬙ 9.10 ...... 0.3583⬙ 9.20 ...... 0.3622⬙ 9.30 ...... 0.3661⬙ 9.40 ...... 0.3701⬙ 9.50 ...... 0.3740⬙ 9.60 ...... 0.3780⬙ 9.70 ...... 0.3819⬙
9.80 .... 0.3858⬙ 9.90 .... 0.3898⬙ 10.00 .... 0.3937⬙ 10.20 .... 0.4016⬙ 10.50 .... 0.4134⬙ 10.80 .... 0.4252⬙ 11.00 .... 0.4331⬙ 11.20 .... 0.4409⬙ 11.50 .... 0.4528⬙ 11.80 .... 0.4646⬙ 12.00 .... 0.4724⬙ 12.20 .... 0.4803⬙ 12.50 .... 0.4921⬙ 13.00 .... 0.5118⬙ 13.50 .... 0.5315⬙ 14.00 .... 0.5512⬙ 14.50 .... 0.5709⬙
15.00 .... 0.5906⬙ 15.50 .... 0.6102⬙ 16.00 .... 0.6299⬙ 16.50 .... 0.6496⬙ 17.00 .... 0.6693⬙ 17.50 .... 0.6890⬙ 18.00 .... 0.7087⬙ 19.00 .... 0.7480⬙ 20.00 .... 0.7874⬙ 21.00 .... 0.8268⬙ 22.00 .... 0.8661⬙ 24.00 .... 0.9449⬙ 26.00 .... 1.0236⬙ 27.00 .... 1.0630⬙ 28.00 .... 1.1024⬙ 29.00 .... 1.1417⬙ 30.00 .... 1.1811⬙ 31.00 .... 1.2204⬙
41 64 ...... 21 32 ......
57⁄ 64⬙ .... 0.8906⬙ ⁄ ⬙ 0.7656⬙ 29⁄ 32⬙ .... 0.9062⬙ ⁄ ⬙ 0.7812⬙ 51⁄ 64⬙ ...... 0.7969⬙ 59⁄ 64⬙ .... 0.9219⬙ 13⁄ 16⬙ ...... 0.8125⬙ 15⁄ 16⬙ .... 0.9375⬙ 53⁄ 64⬙ ...... 0.8281⬙ 61⁄ 64⬙ .... 0.9531⬙ 27⁄ 32⬙ ...... 0.8438⬙ 31⁄ 32⬙ .... 0.9688⬙ 55⁄ 64⬙ ...... 0.8594⬙ 63⁄ 64⬙ .... 0.9844⬙ 7⁄ 8⬙ ......... 0.8750⬙ 1⬙ ........... 1.0000⬙ 49 64 ...... 25 32 ......
2313
Related Documents
Drill Bit Info
April 2020 7
Drill Bit Cabinet
October 2019 16
Mood Disorder Little Bit Info
November 2019 26
Bit
October 2019 36
Bit
June 2020 26