Wire Gauge Standard Drill Bit Sizes Drill Bit# inch Diameter Drill Bit # In¢h Diameter 1 2280 31 1200 2 2210 32 1160 3 2130 33 1130 4 2080 a4 110 5 2085 a8 100 8 2040 a8 1065 7 2010 a7 1040 8 1890 a8 1015 g 1960 a0 0995 10 1935 40 0980 i1 1910 A1 0960 12 1890 472 0935 13 1850 43 0880 14 1820 44 0880 15 1800 45 0820 16 770 46 0810 17 1730 47 0788 18 16095 48 0760 18 1660 48 0730 28 1610 50 Q700 21 1580 51 0670 22 570 £2 0835 23 1540 a2 0585 24 1520 &4 0550 25 14858 Eg 05820 26 1470 5B 0465 27 1440 E7 0430 28
