Standard Drill Chart

Drill   Decimal Drill   Decimal Drill   Decimal Drill   Decimal 80 = .0135 43 = .089 8 = .199 25/64 = .3906 79 = .0145 42 = .0935 7 = .201 X = .397 1/64 = .0156 3/32 = .0938 13/64 = .2031 Y = .404 78 = .016 41 = .096 6 = .204 13/32 = .4063 77 = .018 40 = .098 5 = .2055 Z = .413 76 = .020 39 = .0995 4 = .209 27/64 = .4219 75 = .021 38 = .1015 3 = .213 7/16 = .4375 74 = .0225 37 = .104 7/32 = .2188 29/64 = .4531 73 = .024 36 = .1065 2 = .221 15/32 = .4688 72 = .025 7/64 = .1094 1 = .228 31/64 = .4844 71 = .026 35 = .110 A = .234 1/2 = .500 70 = .028 34 = .111 15/64 = .2344 33/64 = .5156 69 = .0292 33 = .113 B = .238 17/32 = .5313 68 = .031 32 = .116 C = .242 35/64 = .5469 1/32 = .0313 31 = .120 D = .246 9/16 = .5625 67 = .032 1/8 = .1250 1/4 (E) = .250 37/64 = .5781 66 = .033 30 = .1285 F = .257 19/32 = .5938 65 = .035 29 = .136 G = .261 39/64 = .6094 64 = .036 28 = .1405 17/64 = .2656 5/8 = .625 63 = .037 9/64 = .1406 H = .266 41/64 = .6406 62 = .038 27 = .144 I = .272 21/32 = .6563 61 = .039 26 = .147 J = .277 43/64 = .6719 60 = .040 25 = .1495 K = .281 11/16 = .6875 59 = .041 24 = .152 9/32 = .2813 45/64 = .7031 58 = .042 23 = .154 L = .290 23/32 = .7188 57 = .043 5/32 = .1563 M = .295 47/64 = .7344 56 = .0465 22 = .157 19/64 = .2969 3/4 = .750 3/64 = .0469 21 = .159 N = .302 49/64 = .7656 55 = .052 20 = .161 5/16 = .3125 25/32 = .7813 54 = .055 19 = .166 O = .316 51/64 = .7969 53 = .0595 18 = .1695 P = .323 13/16 = .8125 1/16 = .0625 11/64 = .1719 21/64 = .3281 53/64 = .8281 52 = .0635 17 = .173 Q = .332 27/32 = .8438 51 = .067 16 = .177 R = .339 55/64 = .8594 50 = .070 15 = .180 11/32 = .3438 7/8 = .875 49 = .073 14 = .182 S = .348 57/64 = .8906 48 = .076 13 = .185 T = .358 29/32 = .9063 5/64 = .0781 3/16 = .1875 23/64 = .3594 59/64 = .9219 47 = .0785 12 = .189 U = .368 15/16 = .9375 46 = .081 11 = .191 3/8 = .375 61/64 = .9531 45 = .082 10 = .1935 V = .377 31/32 = .9688 44 = .086 9 = .196 W = .386 63/64 = .9844