ASME B.94.1-- Screw Machine Length Twist Drill Bits
 Manufacturing process: rolled, milled, fully ground
 Point angle: 118 or 135 split point
 Flute type: N
 Material: HSS or HSS-Co
 Finish: White,TIN Coated,Rainbow Color,Bright,Black & Bright,Zirconium Coating,Black,Coffee Color, etc.
 Diameter: 1-20mm

Fractional
Dia. Dec. Eq. Flute  Length OAL
       
3/64 .0469 1/2 1-3/8
1/16 .0625 5/8 1-5/8
5/64 .0781 11/16 1-11/16
3/32 .0938 3/4 1-3/4
7/64 .1094 13/16 1-13/16
1/8 .1250 7/8 1-7/8
9/64 .1406 15/16 1-15/16
5/32 .1562 1 2-1/16
11/64 .1719 1-1/16 2-1/8
3/16 .1875 1-1/8 2-3/16
13/64 .2031 1-3/16 2-1/4
7/32 .2188 1-1/4 2-3/8
15/64 .2344 1-5/16 2-7/16
1/4 .2500 1-3/8 2-1/2
17/64 .2656 1-7/16 2-5/8
9/32 .2812 1-1/2 2-11/16
19/64 .2969 1-9/16 2-3/4
5/16 .3125 1-5/8 2-13/16
21/64 .3281 1-11/16 2-15/16
11/32 .3438 1-11/16 3
23/64 .3594 1-3/4 3-1/16
3/8 .3750 1-13/16 3-1/8
25/64 .3906 1-7/8 3-1/4
13/32 .4062 1-15/16 3-5/16
27/64 .4219 2 3-3/8
7/16 .4375 2-1/16 3-7/16
29/64 .4531 2-1/8 3-9/16
15/32 .4688 2-1/8 3-5/8
31/64 .4844 2-3/16 3-11/16
1/2 .5000 2-1/4 3-3/4
33/64 .5156 2-3/8 3-7/8
17/32 .5312 2-3/8 3-7/8
35/64 .5469 2-1/2 4
9/16 .5625 2-1/2 4
37/64 .5781 2-5/8 4-1/8
19/32 .5938 2-5/8 4-1/8
39/64 .6094 2-3/4 4-1/4
5/8 .6250 2-3/4 4-1/4
41/64 .6406 2-7/8 4-1/2
21/32 .6562 2-7/8 4-1/2
43/64 .6719 2-7/8 4-5/8
11/16 .6875 2-7/8 4-5/8
45/64 .7031 3 4-3/4
23/32 .7188 3 4-3/4
47/64 .7344 3-1/8 5
3/4 .7500 3-1/8 5
49/64 .7656 3-1/4 5-1/8
25/32 .7812 3-1/4 5-1/8
51/64 .7969 3-3/8 5-1/4
13/16 .8125 3-3/8 5-1/4
53/64 .8281 3-1/2 5-3/8
27/32 .8438 3-1/2 5-3/8
55/64 .8594 3-1/2 5-1/2
7/8 .8750 3-1/2 5-1/2
57/64 .8906 3-5/8 5-5/8
29/32 .9062 3-5/8 5-5/8
59/64 .9219 3-3/4 5-3/4
15/16 .9375 3-3/4 5-3/4
61/64 .9531 3-7/8 5-7/8
31/32 .9688 3-7/8 5-7/8
63/64 .9844 4 6
1 1.0000 4 6
1-1/16 1.0625 4 6-1/4
1-1/8 1.1250 4 6-3/8
1-3/16 1.1875 4-1/4 6-5/8
1-1/4 1.2500 4-3/8 6-3/4
1-5/16 1.3125 4-3/8 7
1-3/8 1.3750 4-1/2 7-1/8
1-7/16 1.4375 4-3/4 7-3/8
1-1/2 1.5000 4-7/8 7-1/2
1-9/16 1.5625 4-7/8 7-3/4
1-5/8 1.6250 4-7/8 7-3/4
1-11/16 1.6875 5-1/8 8
1-3/4 1.7500 5-1/8 8
1-13/16 1.8125 5-3/8 8-1/4
1-7/8 1.8750 5-3/8 8-1/4
1-15/16 1.9375 5-5/8 8-1/2
2 2.0000 5-5/8 8-1/2
Wire
Dia. Dec.
Eq.		 Flute
Length		 OAL
1 .2280 1-5/16 2-7/16
2 .2210 1-5/16 2-7/16
3 .2130 1-1/4 2-3/8
4 .2090 1-1/4 2-3/8
5 .2055 1-1/4 2-3/8
6 .2040 1-1/4 2-3/8
7 .2010 1-3/16 2-1/4
8 .1990 1-3/16 2-1/4
9 .1960 1-3/16 2-1/4
10 .1935 1-3/16 2-1/4
11 .1910 1-3/16 2-1/4
12 .1890 1-3/16 2-1/4
13 .1850 1-1/8 2-3/16
14 .1820 1-1/8 2-3/16
15 .1800 1-1/8 2-3/16
16 .1770 1-1/8 2-3/16
17 .1730 1-1/8 2-3/16
18 .1695 1-1/16 2-1/8
19 .1660 1-1/16 2-1/8
20 .1610 1-1/16 2-1/8
21 .1590 1-1/16 2-1/8
22 .1570 1-1/16 2-1/8
23 .1540 1 2-1/16
24 .1520 1 2-1/16
25 .1495 1 2-1/16
26 .1470 1 2-1/16
27 .1440 1 2-1/16
28 .1405 15/16 1-15/16
29 .1360 15/16 1-15/16
30 .1285 15/16 1-15/16
31 .1200 7/8 1-7/8
32 .1160 7/8 1-7/8
33 .1130 7/8 1-7/8
34 .1110 7/8 1-7/8
35 .1100 7/8 1-7/8
36 .1065 13/16 1-13/16
37 .1040 13/16 1-13/16
38 .1015 13/16 1-13/16
39 .0995 13/16 1-13/16
40 .0980 13/16 1-13/16
41 .0960 13/16 1-13/16
42 .0935 3/4 1-3/4
43 .0890 3/4 1-3/4
44 .0860 3/4 1-3/4
45 .0820 3/4 1-3/4
46 .0810 3/4 1-3/4
47 .0785 11/16 1-11/16
48 .0760 11/16 1-11/16
49 .0730 11/16 1-11/16
50 .0700 11/16 1-11/16
51 .0670 11/16 1-11/16
52 .0635 11/16 1-11/16
53 .0595 5/8 1-5/8
54 .0550 5/8 1-5/8
55 .0520 5/8 1-5/8
56 .0465 1/2 1-3/8
57 .0430 1/2 1-3/8
58 .0420 1/2 1-3/8
59 .0410 1/2 1-3/8
60 .0400 1/2 1-3/8
Letter
Dia. Dec.
Eq.		 Flute
Length		 OAL
A .2340 1-5/16 2-7/16
B .2380 1-3/8 2-1/2
C .2420 1-3/8 2-1/2
D .2460 1-3/8 2-1/2
E .2500 1-3/8 2-1/2
F .2570 1-7/16 2-5/8
G .2610 1-7/16 2-5/8
H .2660 1-1/2 2-11/16
I .2720 1-1/2 2-11/16
J .2770 1-1/2 2-11/16
K .2810 1-1/2 2-11/16
L .2900 1-9/16 2-3/4
M .2950 1-9/16 2-3/4
N .3020 1-5/8 2-13/16
O .3160 1-11/16 2-15/16
P .3230 1-11/16 2-15/16
Q .3320 1-11/16 3
R .3390 1-11/16 3
S .3480 1-3/4 3-1/16
T .3580 1-3/4 3-1/16
U .3680 1-13/16 3-1/8
V .3770 1-7/8 3-1/4
W .3860 1-7/8 3-1/4
X .3970 1-15/16 3-5/16
Y .4040 1-15/16 3-5/16
Z .4130 2 3-3/8