Drill Number / Decimal Cross Reference
| drill number |
decimal (inch) |
decimal (mm) |
| 97 |
.0059 |
.150 |
| 96 |
.0063 |
.160 |
| 95 |
.0067 |
.170 |
| 94 |
.0071 |
.180 |
| 93 |
.0075 |
.190 |
| 92 |
.0079 |
.200 |
| 91 |
.0083 |
.211 |
| 90 |
.0087 |
.221 |
| 89 |
.0091 |
.231 |
| 88 |
.0095 |
.241 |
| 87 |
.0100 |
.254 |
| 86 |
.0105 |
.267 |
| 85 |
.0110 |
.280 |
| 84 |
.0115 |
.292 |
| 83 |
.0120 |
.305 |
| 82 |
.0125 |
.318 |
| 81 |
.0130 |
.330 |
| 80 |
.0135 |
.343 |
| 79 |
.0145 |
.368 |
| 78 |
.0160 |
.406 |
| 77 |
.0180 |
.457 |
| 76 |
.0200 |
.508 |
| 75 |
.0210 |
.533 |
| 74 |
.0225 |
.572 |
| 73 |
.0240 |
.610 |
| 72 |
.0250 |
.635 |
| 71 |
.0260 |
.660 |
| 70 |
.0280 |
.711 |
| 69 |
.0292 |
.742 |
| 68 |
.0310 |
.787 |
| 67 |
.0320 |
.813 |
| 66 |
.0330 |
.838 |
| 65 |
.0350 |
.889 |
| 64 |
.0360 |
.914 |
| 63 |
.0370 |
.940 |
| 62 |
.0380 |
.965 |
| 61 |
.0390 |
.991 |
| 60 |
.0400 |
1.016 |
| 59 |
.0410 |
1.041 |
| 58 |
.0420 |
1.067 |
| 57 |
.0430 |
1.092 |
| 56 |
.0465 |
1.181 |
| 55 |
.0520 |
1.321 |
| 54 |
.0550 |
1.397 |
| 53 |
.0595 |
1.511 |
| 52 |
.0635 |
1.613 |
| 51 |
.0670 |
1.702 |
| 50 |
.0700 |
1.778 |
| 49 |
.0730 |
1.854 |
| 48 |
.0760 |
1.930 |
| 47 |
.0785 |
1.994 |
| 46 |
.0810 |
2.057 |
| 45 |
.0820 |
2.083 |
| 44 |
.0860 |
2.184 |
| 43 |
.0890 |
2.261 |
| 42 |
.0935 |
2.375 |
| 41 |
.0960 |
2.438 |
| 40 |
.0980 |
2.489 |
| 39 |
.0995 |
2.527 |
| 38 |
.1015 |
2.578 |
| 37 |
.1040 |
2.642 |
| 36 |
.1065 |
2.705 |
| 35 |
.1100 |
2.794 |
| 34 |
.1110 |
2.819 |
| 33 |
.1130 |
2.870 |
| 32 |
.1160 |
2.946 |
| 31 |
.1200 |
3.048 |
| 30 |
.1285 |
3.264 |
| 29 |
.1360 |
3.454 |
| 28 |
.1405 |
3.569 |
| 27 |
.1440 |
3.658 |
| 26 |
.1470 |
3.734 |
| 25 |
.1495 |
3.797 |
| 24 |
.1520 |
3.861 |
| 23 |
.1540 |
3.912 |
| 22 |
.1570 |
3.988 |
| 21 |
.1590 |
4.039 |
| 20 |
.1610 |
4.089 |
| 19 |
.1660 |
4.216 |
| 18 |
.1695 |
4.305 |
| 17 |
.1730 |
4.394 |
| 16 |
.1770 |
4.496 |
| 15 |
.1800 |
4.572 |
| 14 |
.1820 |
4.623 |
| 13 |
.1850 |
4.700 |
| 12 |
.1890 |
4.800 |
| 11 |
.1910 |
4.851 |
| 10 |
.1935 |
4.915 |
| 9 |
.1960 |
4.978 |
| 8 |
.1990 |
5.054 |
| 7 |
.2010 |
5.105 |
| 6 |
.2040 |
5.182 |
| 5 |
.2055 |
5.220 |
| 4 |
.2090 |
5.309 |
| 3 |
.2130 |
5.410 |
| 2 |
.2210 |
5.613 |
| 1 |
.2280 |
5.791 |
|
Drill Letter / Decimal Cross Reference
| drill letter |
decimal (inch) |
decimal (mm) |
| A |
.2340 |
5.944 |
| B |
.2380 |
6.045 |
| C |
.242 |
6.147 |
| D |
.2460 |
6.248 |
| E |
.2500 |
6.350 |
| F |
.2570 |
6.528 |
| G |
.2610 |
6.629 |
| H |
.2660 |
6.756 |
| I |
.2720 |
6.909 |
| J |
.2770 |
7.036 |
| K |
.2810 |
7.137 |
| L |
.2900 |
7.366 |
| M |
.2950 |
7.493 |
| N |
.3020 |
7.671 |
| O |
.3160 |
8.026 |
| P |
.3230 |
8.204 |
| Q |
.3320 |
8.433 |
| R |
.3390 |
8.611 |
| S |
.3480 |
8.839 |
| T |
.3580 |
9.093 |
| U |
.3680 |
9.347 |
| V |
.3770 |
9.576 |
| W |
.3860 |
9.804 |
| X |
.3970 |
10.084 |
| Y |
.4040 |
10.262 |
| Z |
.4130 |
10.490 |
|
