>I looked in the archives but could not find a listing of drill # size
>equivalents for a standard set of drill bits measured in 1/64th
>increments. I was able to find reference to a #12 bit being
>equivalent to a 3/16th bit. Does this mean that each number
>increment represents 1/64th of an inch since 12 x 1/64 = 3/16?
Size Inch Size Inch Size Inch Size Inch
---- ------ ---- ------ ---- ------ ----- -----
80 .0135 32 .1160 M .2950 15/16 .9375
79 .0145 31 .1200 19/64 .2969 61/64 .9531
1/64 .0156 1/8 .1250 N .3020 31/32 .9688
78 .0160 30 .1285 5/16 .3125 63/64 .9844
77 .0180 29 .1360 O .3160
76 .0200 28 .1405 P .3230
75 .0210 9/64 .1406 21/64 .3281
74 .0225 27 .1440 Q .3320
73 .0240 26 .1470 R .3390
72 .0250 25 .1495 11/32 .3438
71 .0260 24 .1520 S .3480
70 .0280 23 .1540 T .3580
69 .0292 5/32 .1563 23/64 .3594
68 .0310 22 .1570 U .3680
1/32 .0313 21 .1590 3/8 .3750
67 .0320 20 .1610 V .3770
66 .0330 19 .1660 W .3860
65 .0350 18 .1695 25/64 .3906
64 .0360 11/64 .1719 X .3970
63 .0370 17 .1730 Y .4040
62 .0380 16 .1770 13/32 .4063
61 .0390 15 .1800 Z .4130
60 .0400 14 .1820 27/64 .4219
59 .0410 13 .1850 7/16 .4375
58 .0420 3/16 .1875 29/64 .4531
57 .0430 12 .1890 15/32 .4688
56 .0465 11 .1910 31/64 .4844
3/64 .0469 10 .1935 1/2 .5000
55 .0520 9 .1960 33/64 .5156
54 .0550 8 .1990 17/32 .5313
53 .0595 7 .2010 35/64 .5469
1/16 .0625 13/64 .2031 9/16 .5625
52 .0635 6 .2040 37/64 .5781
51 .0670 5 .2055 19/32 .5938
50 .0700 4 .2090 39/64 .6094
49 .0730 3 .2130 5/8 .6250
48 .0760 7/32 .2188 41/64 .6406
5/64 .0781 2 .2210 21/32 .6563
47 .0785 1 .2280 43/64 .6719
46 .0810 A .2340 11/16 .6875
45 .0820 15/64 .2344 45/64 .7031
44 .0860 B .2380 23/32 .7188
43 .0890 C .2420 47/64 .7344
42 .0935 D .2460 3/4 .7500
3/32 .0938 1/4 .2500 49/64 .7656
41 .0960 E .2500 25/32 .7813
40 .0980 F .2570 51/64 .7969
39 .0995 G .2610 26/32 .8125
38 .1015 17/64 .2656 53/64 .8281
37 .1040 H .2660 27/32 .8438
36 .1065 I .2720 55/64 .8594
7/64 .1094 J .2770 7/8 .8750
35 .1100 K .2810 57/64 .8906
34 .1110 9/32 .2813 29/32 .9063
33 .1130 L .2900 59/64 .9219
Bob . . .
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