Drill Size Number | Decimal Equivalent | Drill Size Number | Decimal Equivalent | Drill Size Letter | Decimal Equivalent | Drill Size Fraction | Decimal Equivalent |
60 | 0.0400 | 30 | 0.1285 | A | 0.2340 | 1/16 | 0.0625 |
59 | 0.0410 | 29 | 0.1360 | B | 0.2380 | 5/64 | 0.0781 |
58 | 0.0420 | 28 | 0.1405 | C | 0.2420 | 3/32 | 0.0938 |
57 | 0.0430 | 27 | 0.1440 | D | 0.2460 | 7/64 | 0.1094 |
56 | 0.0465 | 26 | 0.1470 | E | 0.2500 | 1/8 | 0.1250 |
55 | 0.0520 | 25 | 0.1495 | F | 0.2570 | 9/64 | 0.1406 |
54 | 0.0550 | 24 | 0.1520 | G | 0.2610 | 5/32 | 0.1563 |
53 | 0.0595 | 23 | 0.1540 | H | 0.2660 | 11/64 | 0.1719 |
52 | 0.0635 | 22 | 0.1570 | I | 0.2720 | 3/16 | 0.1875 |
51 | 0.0670 | 21 | 0.1590 | J | 0.2770 | 13/64 | 0.2031 |
50 | 0.0700 | 20 | 0.1610 | K | 0.2810 | 7/32 | 0.2188 |
49 | 0.0730 | 19 | 0.1660 | L | 0.2900 | 15/64 | 0.2344 |
48 | 0.0760 | 18 | 0.1695 | M | 0.2950 | 1/4 | 0.2500 |
47 | 0.0785 | 17 | 0.1730 | N | 0.3020 | 17/64 | 0.2656 |
46 | 0.0810 | 16 | 0.1770 | O | 0.3160 | 9/32 | 0.2813 |
45 | 0.0820 | 15 | 0.1800 | P | 0.3230 | 19/64 | 0.2969 |
44 | 0.0860 | 14 | 0.1820 | Q | 0.3320 | 5/16 | 0.3125 |
43 | 0.0890 | 13 | 0.1850 | R | 0.3390 | 21/64 | 0.3281 |
42 | 0.0935 | 12 | 0.1890 | S | 0.3480 | 11/32 | 0.3438 |
41 | 0.0960 | 11 | 0.1910 | T | 0.3580 | 23/64 | 0.3594 |
40 | 0.0980 | 10 | 0.1935 | U | 0.3680 | 3/8 | 0.3750 |
39 | 0.0995 | 9 | 0.1960 | V | 0.3770 | 25/64 | 0.3906 |
38 | 0.1015 | 8 | 0.1990 | W | 0.3860 | 13/32 | 0.4063 |
37 | 0.1040 | 7 | 0.2010 | X | 0.3970 | 27/64 | 0.4219 |
36 | 0.1065 | 6 | 0.2040 | Y | 0.4040 | 7/16 | 0.4375 |
35 | 0.1100 | 5 | 0.2055 | Z | 0.4130 | 29/64 | 0.4531 |
34 | 0.1110 | 4 | 0.2090 | 15/32 | 0.4688 | ||
33 | 0.1130 | 3 | 0.2130 | 31/64 | 0.4844 | ||
32 | 0.1160 | 2 | 0.2210 | 1/2 | 0.5000 | ||
31 | 0.1200 | 1 | 0.2280 |