Drill bit sizes
DRILL BIT SIZES
| DRILL
BIT SIZES |
| FRACTION
SIZE |
#
SIZE |
LETTER
SIZE |
METRIC
SIZE |
DECIMAL
INCHES |
| |
80 |
|
|
0.0135 |
| |
79 |
|
|
0.0145 |
| 1/64 |
|
|
|
0.0156 |
| |
78 |
|
|
0.0160 |
| |
77 |
|
|
0.0180 |
| |
|
|
0.50 |
0.0197 |
| |
76 |
|
|
0.0200 |
| |
75 |
|
|
0.0210 |
| |
74 |
|
|
0.0225 |
| |
73 |
|
|
0.0240 |
| |
72 |
|
|
0.0250 |
| |
71 |
|
|
0.0260 |
| |
70 |
|
|
0.0280 |
| |
69 |
|
|
0.0292 |
| |
|
|
0.75 |
0.0295 |
| |
68 |
|
|
0.0310 |
| 1/32 |
|
|
|
0.0312 |
| |
67 |
|
|
0.0320 |
| |
66 |
|
|
0.0330 |
| |
65 |
|
|
0.0350 |
| |
64 |
|
|
0.0360 |
| |
63 |
|
|
0.0370 |
| |
62 |
|
|
0.0380 |
| |
61 |
|
|
0.0390 |
| |
|
|
1.00 |
0.0394 |
| |
60 |
|
|
0.0400 |
| |
59 |
|
|
0.0410 |
| |
58 |
|
|
0.0420 |
| |
57 |
|
|
0.0430 |
| |
56 |
|
|
0.0465 |
| 3/64 |
|
|
|
0.0469 |
| |
|
|
1.25 |
0.0492 |
| |
55 |
|
|
0.0520 |
| |
54 |
|
|
0.0550 |
| |
|
|
1.50 |
0.0591 |
| |
53 |
|
|
0.0595 |
| 1/16 |
|
|
|
0.0625 |
| |
52 |
|
|
0.0635 |
| |
51 |
|
|
0.0670 |
| |
|
|
1.75 |
0.0689 |
| |
50 |
|
|
0.0700 |
| |
49 |
|
|
0.0730 |
| |
48 |
|
|
0.0760 |
| 5/64 |
|
|
|
0.0781 |
| |
47 |
|
|
0.0785 |
| |
|
|
2.00 |
0.0787 |
| |
46 |
|
|
0.0810 |
| |
45 |
|
|
0.0820 |
| |
44 |
|
|
0.0860 |
| |
|
|
2.25 |
0.0886 |
| |
43 |
|
|
0.0890 |
| |
42 |
|
|
0.0935 |
| 3/32 |
|
|
|
0.0938 |
| |
41 |
|
|
0.0960 |
| |
40 |
|
|
0.0980 |
| |
|
|
2.50 |
0.0984 |
| |
39 |
|
|
0.0995 |
| |
38 |
|
|
0.1015 |
| |
37 |
|
|
0.1040 |
| |
36 |
|
|
0.1065 |
| |
|
|
2.75 |
0.1083 |
| 7/64 |
|
|
|
0.1094 |
| |
35 |
|
|
0.1100 |
| |
34 |
|
|
0.1110 |
| |
33 |
|
|
0.1130 |
| |
32 |
|
|
0.1160 |
| |
|
|
3.00 |
0.1181 |
| |
31 |
|
|
0.1200 |
| 1/8 |
|
|
|
0.1250 |
| |
|
|
3.25 |
0.1280 |
| |
30 |
|
|
0.1285 |
| |
29 |
|
|
0.1360 |
| |
|
|
3.50 |
0.1378 |
| |
28 |
|
|
0.1405 |
| 9/64 |
|
|
|
0.1406 |
| |
27 |
|
|
0.1440 |
| |
26 |
|
|
0.1470 |
| |
|
|
3.75 |
0.1476 |
| |
25 |
|
|
0.1495 |
| |
24 |
|
|
0.1520 |
| |
23 |
|
|
0.1540 |
| 5/32 |
|
|
|
0.1562 |
| |
22 |
|
|
0.1570 |
| |
|
|
4.00 |
0.1575 |
| |
21 |
|
|
0.1590 |
| |
20 |
|
|
0.1610 |
| |
19 |
|
|
0.1660 |
| |
|
|
4.25 |
0.1673 |
| |
18 |
|
|
0.1695 |
| 11/64 |
|
|
|
0.1719 |
| |
17 |
|
|
0.1730 |
| |
16 |
|
|
0.1770 |
| |
|
|
4.50 |
0.1772 |
| |
15 |
|
|
0.1800 |
| |
14 |
|
|
0.1820 |
| |
13 |
|
|
0.1850 |
| |
|
|
4.75 |
0.1870 |
| 3/16 |
|
|
|
0.1875 |
| |
12 |
|
|
0.1890 |
| |
11 |
|
|
0.1910 |
| |
10 |
|
|
0.1935 |
| |
9 |
|
|
0.1960 |
| |
|
|
5.00 |
0.1969 |
| |
8 |
|
|
0.1990 |
| |
7 |
|
|
0.2010 |
| 13/64 |
|
|
|
0.2031 |
| |
6 |
|
|
0.2040 |
| |
5 |
|
|
0.2055 |
| |
|
|
5.25 |
0.2067 |
| |
4 |
|
|
0.2090 |
| |
3 |
|
|
0.2130 |
| |
|
|
5.50 |
0.2165 |
| 7/32 |
|
|
|
0.2188 |
| |
2 |
|
|
0.2210 |
| |
|
|
5.75 |
0.2264 |
| |
1 |
|
|
0.2280 |
| |
|
A |
|
0.2340 |
| 15/64 |
|
|
|
0.2344 |
| |
|
|
6.00 |
0.2362 |
| |
|
B |
|
0.2380 |
| |
|
C |
|
0.2420 |
| |
|
D |
|
0.2460 |
| |
|
|
6.25 |
0.2461 |
| 1/4 |
|
E |
|
0.2500 |
| |
|
|
6.50 |
0.2559 |
| |
|
F |
|
0.2570 |
| |
|
G |
|
0.2610 |
| 17/64 |
|
|
|
0.2656 |
| |
|
|
6.75 |
0.2657 |
| |
|
H |
|
0.2660 |
| |
|
I |
|
0.2720 |
| |
|
|
7.00 |
0.2756 |
| |
|
J |
|
0.2770 |
| |
|
K |
|
0.2810 |
| 9/32 |
|
|
|
0.2812 |
| |
|
|
7.25 |
0.2854 |
| |
|
L |
|
0.2900 |
| |
|
M |
|
0.2950 |
| |
|
|
7.50 |
0.2953 |
| 19/64 |
|
|
|
0.2969 |
| |
|
N |
|
0.3020 |
| |
|
|
7.75 |
0.3051 |
| 5/16 |
|
|
|
0.3125 |
| |
|
|
8.00 |
0.3150 |
| |
|
O |
|
0.3160 |
| |
|
P |
|
0.3230 |
| |
|
|
8.25 |
0.3248 |
| 21/64 |
|
|
|
0.3281 |
| |
|
Q |
|
0.3320 |
| |
|
|
8.50 |
0.3346 |
| |
|
R |
|
0.3390 |
| 11/32 |
|
|
|
0.3438 |
| |
|
|
8.75 |
0.3445 |
| |
|
S |
|
0.3480 |
| |
|
|
9.00 |
0.3543 |
| |
|
T |
|
0.3580 |
| 23/64 |
|
|
|
0.3594 |
| |
|
|
9.25 |
0.3642 |
| |
|
U |
|
0.3680 |
| |
|
|
9.50 |
0.3740 |
| 3/8 |
|
|
|
0.3750 |
| |
|
V |
|
0.3770 |
| |
|
|
9.75 |
0.3839 |
| |
|
W |
|
0.3860 |
| 25/64 |
|
|
|
0.3906 |
| |
|
|
10.00 |
0.3937 |
| |
|
X |
|
0.3970 |
| |
|
Y |
|
0.4040 |
| 13/32 |
|
|
|
0.4063 |
| |
|
Z |
|
0.4130 |
| |
|
|
10.50 |
0.4134 |
| 27/64 |
|
|
|
0.4219 |
| |
|
|
11.00 |
0.4331 |
| 7/16 |
|
|
|
0.4375 |
| |
|
|
11.50 |
0.4528 |
| 29/64 |
|
|
|
0.4531 |
| 15/32 |
|
|
|
0.4688 |
| |
|
|
12.00 |
0.4724 |
| 31/64 |
|
|
|
0.4844 |
| |
|
|
12.50 |
0.4921 |
| 1/2 |
|
|
|
0.5000 |
| |
|
|
13.00 |
0.5118 |
| 33/64 |
|
|
|
0.5156 |
| 17/32 |
|
|
|
0.5312 |
| |
|
|
13.50 |
0.5315 |
| 35/64 |
|
|
|
0.5469 |
| |
|
|
14.00 |
0.5512 |
| 9/16 |
|
|
|
0.5625 |
| |
|
|
14.50 |
0.5709 |
| 37/64 |
|
|
|
0.5781 |
| |
|
|
15.00 |
0.5906 |
| 19/32 |
|
|
|
0.5938 |
| 39/64 |
|
|
|
0.6094 |
| |
|
|
15.50 |
0.6102 |
| 5/8 |
|
|
|
0.6250 |
| |
|
|
16.00 |
0.6299 |
| 41/64 |
|
|
|
0.6406 |
| |
|
|
16.50 |
0.6496 |
| 21/32 |
|
|
|
0.6562 |
| |
|
|
17.00 |
0.6693 |
| 43/64 |
|
|
|
0.6719 |
| 11/16 |
|
|
|
0.6875 |
| |
|
|
17.50 |
0.6890 |
| 45/64 |
|
|
|
0.7031 |
| |
|
|
18.00 |
0.7087 |
| 23/32 |
|
|
|
0.7188 |
| |
|
|
18.50 |
0.7283 |
| 47/64 |
|
|
|
0.7344 |
| |
|
|
19.00 |
0.7480 |
| 3/4 |
|
|
|
0.7500 |
| 49/64 |
|
|
|
0.7656 |
| |
|
|
19.50 |
0.7677 |
| 25/32 |
|
|
|
0.7813 |
| |
|
|
20.00 |
0.7874 |
| 51/64 |
|
|
|
0.7969 |
| |
|
|
20.50 |
0.8071 |
| 13/16 |
|
|
|
0.8125 |
| |
|
|
21.00 |
0.8268 |
| 53/64 |
|
|
|
0.8281 |
| 27/32 |
|
|
|
0.8438 |
| |
|
|
21.50 |
0.8465 |
| 55/64 |
|
|
|
0.8594 |
| |
|
|
22.00 |
0.8661 |
| 7/8 |
|
|
|
0.8750 |
| |
|
|
22.50 |
0.8858 |
| 57/64 |
|
|
|
0.8906 |
| |
|
|
23.00 |
0.9055 |
| 29/32 |
|
|
|
0.9062 |
| 59/64 |
|
|
|
0.9219 |
| |
|
|
23.50 |
0.9252 |
| 15/16 |
|
|
|
0.9375 |
| |
|
|
24.00 |
0.9449 |
| 61/64 |
|
|
|
0.9531 |
| |
|
|
24.50 |
0.9646 |
| 31/32 |
|
|
|
0.9688 |
| |
|
|
25.00 |
0.9843 |
| 63/64 |
|
|
|
0.9844 |
| 1 |
|
|
|
1.0000 |
This
page last updated:
16-Apr-2008
Content
and Design © 2002-present WanderingTrail, Ronald Seegert
Common Sense and Safety should always be observed when working on your vehicle or doing modifications. Jackstands, wheel blocks, disconnecting the battery are a few of the basic safety precautions that should be used and may not be mentioned in the write ups on this site. You are responsible for your own installation, these write ups are a helpful guideline and should not be taken as an official installation instruction. My write up may be different from the kits currently out there, so alwasy double check the manufacturers installation instructions when installing anything. I try to keep the site up to date with changes that have occured as I discover them, but may not have the latest unless someone lets me know. If you feel that an install is above your capabilities after reading my write ups, I recommend getting together with a club and getting some help. Only a few times have I needed to employe some actual help from a shop to get something done. Usually welding or A/C work. While I have spent many years working on mechanical systems, I am not an expert, nor do I pretend to be one. I hope these write ups have been useful to you.
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This site is in no way associated with FCA.
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