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ANSI Standard Straight Shank Twist Drill Sizes .0135 to 1.000
| Drill |
Decimal |
Drill |
Decimal |
Drill |
Decimal |
| 80 |
0.0135 |
1/8 |
0.1250 |
O |
0.3160 |
| 79 |
0.0145 |
30 |
0.1285 |
P |
0.3230 |
| 1/64 |
0.0156 |
29 |
0.1360 |
21/64 |
0.3281 |
| 78 |
0.0160 |
28 |
0.1405 |
Q |
0.3320 |
| 77 |
0.0180 |
9/64 |
0.1406 |
R |
0.3390 |
| 76 |
0.0200 |
27 |
0.1440 |
11/32 |
0.3437 |
| 75 |
0.0210 |
26 |
0.1470 |
S |
0.3480 |
| 74 |
0.0225 |
25 |
0.1495 |
T |
0.3580 |
| 73 |
0.0240 |
24 |
0.1520 |
23/64 |
0.3594 |
| 72 |
0.0250 |
23 |
0.1540 |
U |
0.3680 |
| 71 |
0.0260 |
5/32 |
0.1562 |
3/8 |
0.3750 |
| 70 |
0.0280 |
22 |
0.1570 |
V |
0.3770 |
| 69 |
0.0292 |
21 |
0.1590 |
W |
0.3860 |
| 68 |
0.0310 |
20 |
0.1610 |
25/64 |
0.3906 |
| 1/32 |
0.0312 |
19 |
0.1660 |
X |
0.3970 |
| 67 |
0.0320 |
18 |
0.1695 |
Y |
0.4040 |
| 66 |
0.0330 |
11/64 |
0.1719 |
13/32 |
0.4062 |
| 65 |
0.0350 |
17 |
0.1730 |
Z |
0.4130 |
| 64 |
0.0360 |
16 |
0.1770 |
27/64 |
0.4219 |
| 63 |
0.0370 |
15 |
0.1800 |
7/16 |
0.4375 |
| 62 |
0.0380 |
14 |
0.1820 |
29/64 |
0.4531 |
| 61 |
0.0390 |
13 |
0.1850 |
15/32 |
0.4687 |
| 60 |
0.0400 |
3/16 |
0.1875 |
31/64 |
0.4844 |
| 59 |
0.0410 |
12 |
0.1890 |
1/2 |
0.5000 |
| 58 |
0.0420 |
11 |
0.1910 |
33/64 |
0.5156 |
| 57 |
0.0430 |
10 |
0.1935 |
17/32 |
0.5312 |
| 56 |
0.0465 |
9 |
0.1960 |
35/64 |
0.5469 |
| 3/64 |
0.0469 |
8 |
0.1990 |
9/16 |
0.5625 |
| 55 |
0.0520 |
7 |
0.2010 |
37/64 |
0.5781 |
| 54 |
0.0550 |
13/64 |
0.2031 |
19/32 |
0.5937 |
| 53 |
0.0595 |
6 |
0.2040 |
39/64 |
0.6094 |
| 1/16 |
0.0625 |
5 |
0.2055 |
5/8 |
0.6250 |
| 52 |
0.0635 |
4 |
0.2090 |
41/64 |
0.6406 |
| 51 |
0.0670 |
3 |
0.2130 |
21/32 |
0.6562 |
| 50 |
0.0700 |
7/32 |
0.2187 |
43/64 |
0.6719 |
| 49 |
0.0730 |
2 |
0.2210 |
11/16 |
0.6875 |
| 48 |
0.0760 |
1 |
0.2280 |
45/64 |
0.7031 |
| 5/64 |
0.0781 |
A |
0.2340 |
23/32 |
0.7187 |
| 47 |
0.0785 |
15/64 |
0.2344 |
47/64 |
0.7344 |
| 46 |
0.0810 |
B |
0.2380 |
3/4 |
0.7500 |
| 45 |
0.0820 |
C |
0.2420 |
49/64 |
0.7656 |
| 44 |
0.0860 |
D |
0.2460 |
25/32 |
0.7812 |
| 43 |
0.0890 |
E |
0.2500 |
51/64 |
0.7969 |
| 42 |
0.0935 |
1/4 |
0.2500 |
13/16 |
0.8125 |
| 3/32 |
0.0937 |
F |
0.2570 |
53/64 |
0.8281 |
| 41 |
0.0960 |
G |
0.2610 |
27/32 |
0.8437 |
| 40 |
0.0980 |
17/64 |
0.2656 |
55/64 |
0.8594 |
| 39 |
0.0995 |
H |
0.2660 |
7/8 |
0.8750 |
| 38 |
0.1015 |
I |
0.2720 |
57/64 |
0.8906 |
| 37 |
0.1040 |
J |
0.2770 |
29/32 |
0.9062 |
| 36 |
0.1065 |
K |
0.2810 |
59/64 |
0.9219 |
| 7/64 |
0.1094 |
9/32 |
0.2812 |
15/16 |
0.9375 |
| 35 |
0.1100 |
L |
0.2900 |
61/64 |
0.9531 |
| 34 |
0.1110 |
M |
0.2950 |
31/32 |
0.9687 |
| 33 |
0.1130 |
19/64 |
0.2969 |
63/64 |
0.9844 |
| 32 |
0.1160 |
N |
0.3020 |
1 |
1.0000 |
| 31 |
0.1200 |
5/16 |
0.3125 |
|
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AutoDrill
1221 US Hwy 22
Lebanon, NJ 08833
Ph. 800-871-5022
Intl. 01-908-542-0244
Fax: 908-542-0242
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