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| DRILL BIT SIZES |
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| FRACTION SIZE |
# SIZE |
LETTER SIZE |
METRIC SIZE |
DECIMAL INCHES |
| 80 |
0.0135 |
|||
| 79 |
0.0145 |
|||
| 1/64 |
0.0156 |
|||
| 78 |
0.0160 |
|||
| 77 |
0.0180 |
|||
| 0.50 |
0.0197 |
|||
| 76 |
0.0200 |
|||
| 75 |
0.0210 |
|||
| 74 |
0.0225 |
|||
| 73 |
0.0240 |
|||
| 72 |
0.0250 |
|||
| 71 |
0.0260 |
|||
| 70 |
0.0280 |
|||
| 69 |
0.0292 |
|||
| 0.75 |
0.0295 |
|||
| 68 |
0.0310 |
|||
| 1/32 |
0.0312 |
|||
| 67 |
0.0320 |
|||
| 66 |
0.0330 |
|||
| 65 |
0.0350 |
|||
| 64 |
0.0360 |
|||
| 63 |
0.0370 |
|||
| 62 |
0.0380 |
|||
| 61 |
0.0390 |
|||
| 1.00 |
0.0394 |
|||
| 60 |
0.0400 |
|||
| 59 |
0.0410 |
|||
| 58 |
0.0420 |
|||
| 57 |
0.0430 |
|||
| 56 |
0.0465 |
|||
| 3/64 |
0.0469 |
|||
| 1.25 |
0.0492 |
|||
| 55 |
0.0520 |
|||
| 54 |
0.0550 |
|||
| 1.50 |
0.0591 |
|||
| 53 |
0.0595 |
|||
| 1/16 |
0.0625 |
|||
| 52 |
0.0635 |
|||
| 51 |
0.0670 |
|||
| 1.75 |
0.0689 |
|||
| 50 |
0.0700 |
|||
| 49 |
0.0730 |
|||
| 48 |
0.0760 |
|||
| 5/64 |
0.0781 |
|||
| 47 |
0.0785 |
|||
| 2.00 |
0.0787 |
|||
| 46 |
0.0810 |
|||
| 45 |
0.0820 |
|||
| 44 |
0.0860 |
|||
| 2.25 |
0.0886 |
|||
| 43 |
0.0890 |
|||
| 42 |
0.0935 |
|||
| 3/32 |
0.0938 |
|||
| 41 |
0.0960 |
|||
| 40 |
0.0980 |
|||
| 2.50 |
0.0984 |
|||
| 39 |
0.0995 |
|||
| 38 |
0.1015 |
|||
| 37 |
0.1040 |
|||
| 36 |
0.1065 |
|||
| 2.75 |
0.1083 |
|||
| 7/64 |
0.1094 |
|||
| 35 |
0.1100 |
|||
| 34 |
0.1110 |
|||
| 33 |
0.1130 |
|||
| 32 |
0.1160 |
|||
| 3.00 |
0.1181 |
|||
| 31 |
0.1200 |
|||
| 1/8 |
0.1250 |
|||
| 3.25 |
0.1280 |
|||
| 30 |
0.1285 |
|||
| 29 |
0.1360 |
|||
| 3.50 |
0.1378 |
|||
| 28 |
0.1405 |
|||
| 9/64 |
0.1406 |
|||
| 27 |
0.1440 |
|||
| 26 |
0.1470 |
|||
| 3.75 |
0.1476 |
|||
| 25 |
0.1495 |
|||
| 24 |
0.1520 |
|||
| 23 |
0.1540 |
|||
| 5/32 |
0.1562 |
|||
| 22 |
0.1570 |
|||
| 4.00 |
0.1575 |
|||
| 21 |
0.1590 |
|||
| 20 |
0.1610 |
|||
| 19 |
0.1660 |
|||
| 4.25 |
0.1673 |
|||
| 18 |
0.1695 |
|||
| 11/64 |
0.1719 |
|||
| 17 |
0.1730 |
|||
| 16 |
0.1770 |
|||
| 4.50 |
0.1772 |
|||
| 15 |
0.1800 |
|||
| 14 |
0.1820 |
|||
| 13 |
0.1850 |
|||
| 4.75 |
0.1870 |
|||
| 3/16 |
0.1875 |
|||
| 12 |
0.1890 |
|||
| 11 |
0.1910 |
|||
| 10 |
0.1935 |
|||
| 9 |
0.1960 |
|||
| 5.00 |
0.1969 |
|||
| 8 |
0.1990 |
|||
| 7 |
0.2010 |
|||
| 13/64 |
0.2031 |
|||
| 6 |
0.2040 |
|||
| 5 |
0.2055 |
|||
| 5.25 |
0.2067 |
|||
| 4 |
0.2090 |
|||
| 3 |
0.2130 |
|||
| 5.50 |
0.2165 |
|||
| 7/32 |
0.2188 |
|||
| 2 |
0.2210 |
|||
| 5.75 |
0.2264 |
|||
| 1 |
0.2280 |
|||
| A |
0.2340 |
|||
| 15/64 |
0.2344 |
|||
| 6.00 |
0.2362 |
|||
| B |
0.2380 |
|||
| C |
0.2420 |
|||
| D |
0.2460 |
|||
| 6.25 |
0.2461 |
|||
| 1/4 |
E |
0.2500 |
||
| 6.50 |
0.2559 |
|||
| F |
0.2570 |
|||
| G |
0.2610 |
|||
| 17/64 |
0.2656 |
|||
| 6.75 |
0.2657 |
|||
| H |
0.2660 |
|||
| I |
0.2720 |
|||
| 7.00 |
0.2756 |
|||
| J |
0.2770 |
|||
| K |
0.2810 |
|||
| 9/32 |
0.2812 |
|||
| 7.25 |
0.2854 |
|||
| L |
0.2900 |
|||
| M |
0.2950 |
|||
| 7.50 |
0.2953 |
|||
| 19/64 |
0.2969 |
|||
| N |
0.3020 |
|||
| 7.75 |
0.3051 |
|||
| 5/16 |
0.3125 |
|||
| 8.00 |
0.3150 |
|||
| O |
0.3160 |
|||
| P |
0.3230 |
|||
| 8.25 |
0.3248 |
|||
| 21/64 |
0.3281 |
|||
| Q |
0.3320 |
|||
| 8.50 |
0.3346 |
|||
| R |
0.3390 |
|||
| 11/32 |
0.3438 |
|||
| 8.75 |
0.3445 |
|||
| S |
0.3480 |
|||
| 9.00 |
0.3543 |
|||
| T |
0.3580 |
|||
| 23/64 |
0.3594 |
|||
| 9.25 |
0.3642 |
|||
| U |
0.3680 |
|||
| 9.50 |
0.3740 |
|||
| 3/8 |
0.3750 |
|||
| V |
0.3770 |
|||
| 9.75 |
0.3839 |
|||
| W |
0.3860 |
|||
| 25/64 |
0.3906 |
|||
| 10.00 |
0.3937 |
|||
| X |
0.3970 |
|||
| Y |
0.4040 |
|||
| 13/32 |
0.4063 |
|||
| Z |
0.4130 |
|||
| 10.50 |
0.4134 |
|||
| 27/64 |
0.4219 |
|||
| 11.00 |
0.4331 |
|||
| 7/16 |
0.4375 |
|||
| 11.50 |
0.4528 |
|||
| 29/64 |
0.4531 |
|||
| 15/32 |
0.4688 |
|||
| 12.00 |
0.4724 |
|||
| 31/64 |
0.4844 |
|||
| 12.50 |
0.4921 |
|||
| 1/2 |
0.5000 |
|||
| 13.00 |
0.5118 |
|||
| 33/64 |
0.5156 |
|||
| 17/32 |
0.5312 |
|||
| 13.50 |
0.5315 |
|||
| 35/64 |
0.5469 |
|||
| 14.00 |
0.5512 |
|||
| 9/16 |
0.5625 |
|||
| 14.50 |
0.5709 |
|||
| 37/64 |
0.5781 |
|||
| 15.00 |
0.5906 |
|||
| 19/32 |
0.5938 |
|||
| 39/64 |
0.6094 |
|||
| 15.50 |
0.6102 |
|||
| 5/8 |
0.6250 |
|||
| 16.00 |
0.6299 |
|||
| 41/64 |
0.6406 |
|||
| 16.50 |
0.6496 |
|||
| 21/32 |
0.6562 |
|||
| 17.00 |
0.6693 |
|||
| 43/64 |
0.6719 |
|||
| 11/16 |
0.6875 |
|||
| 17.50 |
0.6890 |
|||
| 45/64 |
0.7031 |
|||
| 18.00 |
0.7087 |
|||
| 23/32 |
0.7188 |
|||
| 18.50 |
0.7283 |
|||
| 47/64 |
0.7344 |
|||
| 19.00 |
0.7480 |
|||
| 3/4 |
0.7500 |
|||
| 49/64 |
0.7656 |
|||
| 19.50 |
0.7677 |
|||
| 25/32 |
0.7813 |
|||
| 20.00 |
0.7874 |
|||
| 51/64 |
0.7969 |
|||
| 20.50 |
0.8071 |
|||
| 13/16 |
0.8125 |
|||
| 21.00 |
0.8268 |
|||
| 53/64 |
0.8281 |
|||
| 27/32 |
0.8438 |
|||
| 21.50 |
0.8465 |
|||
| 55/64 |
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