Drill Size Decimal Equiv. 80 = .0135 79 = .0145 1/64 = .0156 78 = .016 77 = .018 76 = .020 75 = .021 74 = .0225 73 = .024 72 = .025 71 = .026 70 = .028 69 = .0292 68 = .031 1/32 = .0313 67 = .032 66 = .033 65 = .035 64 = .036 63 = .037 62 = .038 61 = .039 60 = .040 59 = .041 58 = .042 57 = .043 56 = .0465 3/64 = .0469 55 = .052 54 = .055 53 = .0595 1/16 = .0625 52 = .0635 51 = .067 50 = .070 49 = .073 48 = .076 5/64 = .0781 47 = .0785 46 = .081 45 = .082 44 = .086

Drill Size Decimal Equiv. 43 = .089 42 = .0935 3/32 = .0938 41 = .096 40 = .098 39 = .0995 38 = .1015 37 = .104 36 = .1065 7/64 = .1094 35 = .110 34 = .111 33 = .113 32 = .116 31 = .120 1/8 = .125 30 = .1285 29 = .136 28 = .1405 9/64 = .1406 27 = .144 26 = .147 25 = .1495 24 = .152 23 = .154 5/32 = .1563 22 = .157 21 = .159 20 = .161 19 = .166 18 = .1695 11/64 = .1719 17 = .173 16 = .177 15 = .180 14 = .182 13 = .185 3/16 = .1875 12 = .189 11 = .191 10 = .1935 9 = .196

Drill Size Decimal Equiv. 8 = .199 7 = .201 13/64 = .2031 6 = .204 5 = .2055 4 = .209 3 = .213 7/32 = .2188 2 = .221 1 = .228 A = .234 15/64 = .2344 B = .238 C = .242 D = .246 1/4 (E) = .250 F = .257 G = .261 17/64 = .2656 H = .266 I = .272 J = .277 K = .281 9/32 = .2813 L = .290 M = .295 19/64 = .2969 N = .302 5/16 = .3125 O = .316 P = .323 21/64 = .3281 Q = .332 R = .339 11/32 = .3438 S = .348 T = .358 23/64 = .3594 U = .368 3/8 = .375 V = .377 W = .386

Drill Size Decimal Equiv. 25/64 = .3906 X = .397 Y = .404 13/32 = .4063 Z = .413 27/64 = .4219 7/16 = .4375 29/64 = .4531 15/32 = .4688 31/64 = .4844 1/2 = .500 33/64 = .5156 17/32 = .5313 35/64 = .5469 9/16 = .5625 37/64 = .5781 19/32 = .5938 39/64 = .6094 5/8 = .625 41/64 = .6406 21/32 = .6563 43/64 = .6719 11/16 = .6875 45/64 = .7031 23/32 = .7188 47/64 = .7344 3/4 = .750 49/64 = .7656 25/32 = .7813 51/64 = .7969 13/16 = .8125 53/64 = .8281 27/32 = .8438 55/64 = .8594 7/8 = .875 57/64 = .8906 29/32 = .9063 59/64 = .9219 15/16 = .9375 61/64 = .9531 31/32 = .9688 63/64 = .9844