Aircraft Bit

Aircraft Bit

The flute length on these drills is the same as a standard Jobber. Single piece construction.

Size Decimal equivalent Flute Length Overall length
60 .0400 11/16 6
59 .0410 11/16 6
58 .0420 11/16 57
57 .0430 3/4 6
56 .0465 3/4 6
3/64 .0469 3/4 6
55 .0520 7/8 6
54 .0550 7/8 6
53 .0595 7/8 6
1/16 .0625 7/8 6
52 .0635 7/8 6
51 .0670 1 6
50 .0700 1 6
49 .0730 1 6
48 .0760 1 6
5/64 .0781 1 6
47 .0785 1 6
46 .0810 1-1/8 6
45 .0820 1-1/8 6
44 .0860 1-1/8 6
43 .0890 1-1/4 6
42 .0935 1-1/4 6
3/32 .0938 1-1/4 6
41 .0960 1-3/8 6
40 .0980 1-3/8 6
39 .0995 1-3/8 6
38 .1015 1-7/16 6
37 .1040 1-7/16 6
36 .1065 1-7/16 6
7/64 .1094 1-1/2 6
35 .1100 1-1/2 6
34 .1110 1-1/2 6
33 .1130 1-1/2 6
32 .1160 1-5/8 6
31 .1200 1-5/8 6
1/8 .1250 1-5/8 6
30 .1285 1-5/8 6
29 .1360 1-3/4 6
28 .1405 1-3/4 6
9/64 .1406 1-3/4 6
27 .1440 1-7/8 6
26 .1470 1-7/8 6
25 .1495 1-7/8 6
24 .1520 2 6
23 .1540 2 6
5/32 .1562 2 6
22 .1579 2 6
21 .1590 2-1/8 6
20 .1610 2-1/8 6
19 .1660 2-1/8 6
18 .1695 2-1/8 6
11/64 .1719 2-1/8 6
17 .1730 2-3/16 6
16 .1770 2-3/16 6
15 .1800 2-3/16 6
14 .1820 2-3/16 6
13 .1850 2-5/16 6
3/16 .1875 2-5/16 6
12 .1890 2-5/16 6
11 .1910 2-5/16 6
10 .1935 2-7/16 6
9 .1960 2-7/16 6
8 .1990 2-7/16 6
7 .2010 2-7/16 6
13/64 .2031 2-7/16 6
6 .2040 2-1/2 6
5 .2055 2-1/2 6
4 .2090 2-1/2 6
3 .2130 2-1/2 6
7/32 .2188 2-1/2 6
2 .2210 2-5/8 6
1 .2280 2-5/8 6
A .2340 2-5/8 6
15/64 .2344 2-5/8 6
B .2380 2-3/4 6
C .2420 2-3/4 6
D .2460 2-3/4 6
1/4 .2500 2-3/4 6
E .2500 2-3/4 6
F 2570 2-7/8 6
9/32 .2812 2-15/16 6
5/16 .3125 3-3/16 6
3/8 .3750 3-5/8 6
25/64 0.3906 3-3/4 6
13/32 0.4062 3-7/8 6
27/64 0.4218 3-15/16 6
7/16 0.4375 4 6
29/64 0.4531 4-1/8 6
15/32 0.4687 4-5/16 6
31/64 0.4843 4-7/16 6
1/2 0.5 4-1/2 6