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| Drill Size | Inch | mm |
| 107 | 0.0019 | 0.0483 |
| 106 | 0.0023 | 0.0584 |
| 105 | 0.0027 | 0.0686 |
| 104 | 0.0031 | 0.0787 |
| 103 | 0.0035 | 0.0889 |
| 102 | 0.0039 | 0.0991 |
| 101 | 0.0043 | 0.1092 |
| 100 | 0.0047 | 0.1194 |
| 99 | 0.0051 | 0.1295 |
| 98 | 0.0055 | 0.1397 |
| 97 | 0.0059 | 0.1499 |
| 96 | 0.0063 | 0.1600 |
| 95 | 0.0067 | 0.1702 |
| 94 | 0.0071 | 0.1803 |
| 93 | 0.0075 | 0.1905 |
| 92 | 0.0079 | 0.2007 |
| 91 | 0.0083 | 0.2108 |
| 90 | 0.0087 | 0.2210 |
| 89 | 0.0091 | 0.2311 |
| 88 | 0.0095 | 0.2413 |
| 87 | 0.0100 | 0.2540 |
| 86 | 0.0105 | 0.2667 |
| 85 | 0.0110 | 0.2794 |
| 84 | 0.0115 | 0.2921 |
| 83 | 0.0120 | 0.3048 |
| 82 | 0.0125 | 0.3175 |
| 81 | 0.0130 | 0.3302 |
| 80 | 0.0135 | 0.3429 |
| 79 | 0.0145 | 0.3683 |
| 1/64 | 0.0156 | 0.3962 |
| 78 | 0.0160 | 0.4064 |
| 77 | 0.0180 | 0.4572 |
| 76 | 0.0200 | 0.5080 |
| 75 | 0.0210 | 0.5334 |
| 74 | 0.0225 | 0.5715 |
| 73 | 0.0240 | 0.6096 |
| 72 | 0.0250 | 0.6350 |
| 71 | 0.0260 | 0.6604 |
| 70 | 0.0280 | 0.7112 |
| 69 | 0.0292 | 0.7417 |
| 68 | 0.0310 | 0.7874 |
| 1/32 | 0.0312 | 0.7925 |
| 67 | 0.0320 | 0.8128 |
| 66 | 0.0330 | 0.8382 |
| 65 | 0.0350 | 0.8890 |
| 64 | 0.0360 | 0.9144 |
| 63 | 0.0370 | 0.9398 |
| 62 | 0.0380 | 0.9652 |
| 61 | 0.0390 | 0.9906 |
| 60 | 0.0400 | 1.0160 |
| 59 | 0.0410 | 1.0414 |
| 58 | 0.0420 | 1.0668 |
| 57 | 0.0430 | 1.0922 |
| 56 | 0.0465 | 1.1811 |
| 3/64 | 0.0469 | 1.1913 |
| 55 | 0.0520 | 1.3208 |
| 54 | 0.0550 | 1.3970 |
| 53 | 0.0595 | 1.5113 |
| 1/16 | 0.0625 | 1.5875 |
| 52 | 0.0635 | 1.6129 |
| 51 | 0.0670 | 1.7018 |
| 50 | 0.0700 | 1.7780 |
| 49 | 0.0730 | 1.8542 |
| 48 | 0.0760 | 1.9304 |
| 5/64 | 0.0781 | 1.9837 |
| 47 | 0.0785 | 1.9939 |
| Drill Size | Inch | mm |
| 46 | 0.0810 | 2.0574 |
| 45 | 0.0820 | 2.0828 |
| 44 | 0.0860 | 2.1844 |
| 43 | 0.0890 | 2.2606 |
| 42 | 0.0935 | 2.3749 |
| 3/32 | 0.0938 | 2.3825 |
| 41 | 0.0960 | 2.4384 |
| 40 | 0.0980 | 2.4892 |
| 39 | 0.0995 | 2.5273 |
| 38 | 0.1015 | 2.5781 |
| 37 | 0.1040 | 2.6416 |
| 36 | 0.1065 | 2.7051 |
| 7/64 | 0.1094 | 2.7788 |
| 35 | 0.1100 | 2.7940 |
| 34 | 0.1110 | 2.8194 |
| 33 | 0.1130 | 2.8702 |
| 32 | 0.1160 | 2.9464 |
| 31 | 0.1200 | 3.0480 |
| 1/8 | 0.1250 | 3.1750 |
| 30 | 0.1285 | 3.2639 |
| 29 | 0.1360 | 3.4544 |
| 28 | 0.1405 | 3.5687 |
| 9/64 | 0.1406 | 3.5712 |
| 27 | 0.1440 | 3.6576 |
| 26 | 0.1470 | 3.7338 |
| 25 | 0.1495 | 3.7973 |
| 24 | 0.1520 | 3.8608 |
| 23 | 0.1540 | 3.9116 |
| 5/32 | 0.1562 | 3.9675 |
| 22 | 0.1570 | 3.9878 |
| 21 | 0.1590 | 4.0386 |
| 20 | 0.1610 | 4.0894 |
| 19 | 0.1660 | 4.2164 |
| 18 | 0.1695 | 4.3053 |
| 11/64 | 0.1719 | 4.3663 |
| 17 | 0.1730 | 4.3942 |
| 16 | 0.1770 | 4.4958 |
| 15 | 0.1800 | 4.5720 |
| 14 | 0.1820 | 4.6228 |
| 13 | 0.1850 | 4.6990 |
| 3/16 | 0.1875 | 4.7625 |
| 12 | 0.1890 | 4.8006 |
| 11 | 0.1910 | 4.8514 |
| 10 | 0.1935 | 4.9149 |
| 9 | 0.1960 | 4.9784 |
| 8 | 0.1990 | 5.0546 |
| 7 | 0.2010 | 5.1054 |
| 13/64 | 0.2031 | 5.1587 |
| 6 | 0.2040 | 5.1816 |
| 5 | 0.2055 | 5.2197 |
| 4 | 0.2090 | 5.3086 |
| 3 | 0.2130 | 5.4102 |
| 7/32 | 0.2188 | 5.5575 |
| 2 | 0.2211 | 5.6159 |
| 1 | 0.2280 | 5.7912 |
| A | 0.2340 | 5.9436 |
| 15/64 | 0.2344 | 5.9538 |
| B | 0.2380 | 6.0452 |
| C | 0.2420 | 6.1468 |
| D | 0.2460 | 6.2484 |
| 1/4 | 0.2500 | 6.3500 |
| E | 0.2500 | 6.3500 |
| F | 0.2570 | 6.5278 |
| G | 0.2610 | 6.6294 |
| 17/64 | 0.2656 | 6.7462 |
| H | 0.2660 | 6.7564 |
| Drill Size | Inch | mm |
| I | 0.2720 | 6.9088 |
| J | 0.2770 | 7.0358 |
| K | 0.2810 | 7.1374 |
| 9/32 | 0.2812 | 7.1425 |
| L | 0.2900 | 7.3660 |
| M | 0.2950 | 7.4930 |
| 19/64 | 0.2969 | 7.5413 |
| N | 0.3020 | 7.6708 |
| 5/16 | 0.3125 | 7.9375 |
| O | 0.3160 | 8.0264 |
| P | 0.3230 | 8.2042 |
| 21/64 | 0.3281 | 8.3337 |
| Q | 0.3320 | 8.4328 |
| R | 0.3390 | 8.6106 |
| 11/32 | 0.3438 | 8.7325 |
| S | 0.3480 | 8.8392 |
| T | 0.3580 | 9.0932 |
| 23/64 | 0.3594 | 9.1288 |
| U | 0.3680 | 9.3472 |
| 3/8 | 0.3750 | 9.5250 |
| V | 0.3770 | 9.5758 |
| W | 0.3860 | 9.8044 |
| 25/64 | 0.3906 | 9.9212 |
| X | 0.3970 | 10.0838 |
| Y | 0.4040 | 10.2616 |
| 13/32 | 0.4062 | 10.3175 |
| Z | 0.4130 | 10.4902 |
| 27/64 | 0.4219 | 10.7163 |
| 7/16 | 0.4375 | 11.1125 |
| 29/64 | 0.4531 | 11.5087 |
| 15/32 | 0.4688 | 11.9075 |
| 31/64 | 0.4844 | 12.3038 |
| 1/2 | 0.5000 | 12.7000 |
| 33/64 | 0.5156 | 13.0962 |
| 17/32 | 0.5312 | 13.4925 |
| 35/64 | 0.5469 | 13.8913 |
| 9/16 | 0.5625 | 14.2875 |
| 37/64 | 0.5781 | 14.6837 |
| 19/32 | 0.5938 | 15.0825 |
| 39/64 | 0.6094 | 15.4788 |
| 5/8 | 0.6250 | 15.8750 |
| 41/64 | 0.6406 | 16.2712 |
| 21/32 | 0.6562 | 16.6675 |
| 43/64 | 0.6719 | 17.0663 |
| 11/16 | 0.6875 | 17.4625 |
| 45/64 | 0.7031 | 17.8587 |
| 23/32 | 0.7188 | 18.2575 |
| 47/64 | 0.7344 | 18.6538 |
| 3/4 | 0.7500 | 19.0500 |
| 49/64 | 0.7656 | 19.4462 |
| 25/32 | 0.7812 | 19.8425 |
| 51/64 | 0.7969 | 20.2413 |
| 13/16 | 0.8125 | 20.6375 |
| 53/64 | 0.8281 | 21.0337 |
| 27/32 | 0.8438 | 21.4325 |
| 55/64 | 0.8594 | 21.8288 |
| 7/8 | 0.8750 | 22.2250 |
| 57/64 | 0.8906 | 22.6212 |
| 29/32 | 0.9062 | 23.0175 |
| 59/64 | 0.9219 | 23.4163 |
| 15/16 | 0.9375 | 23.8125 |
| 61/64 | 0.9531 | 24.2087 |
| 31/32 | 0.9688 | 24.6075 |
| 63/64 | 0.9844 | 25.0038 |
| 1 | 1.0000 | 25.4000 |