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Drill Sizes
Standard Drill Sizes – Inches
|
Drill Size |
. |
Decimal Equiv. |
. |
Drill Size |
. |
Decimal Equiv. |
. |
Drill Size |
. |
Decimal Equiv. |
. |
Drill Size |
. |
Decimal Equiv. |
|
80 |
= |
.0135 |
|
43 |
= |
.089 |
|
8 |
= |
.199 |
|
25/64 |
= |
.3906 |
|
79 |
= |
.0145 |
|
42 |
= |
.0935 |
|
7 |
= |
.201 |
|
X |
= |
.397 |
|
1/64 |
= |
.0156 |
|
3/32 |
= |
.0938 |
|
13/64 |
= |
.2031 |
|
Y |
= |
.404 |
|
78 |
= |
.016 |
|
41 |
= |
.096 |
|
6 |
= |
.204 |
|
13/32 |
= |
.4063 |
|
77 |
= |
.018 |
|
40 |
= |
.098 |
|
5 |
= |
.2055 |
|
Z |
= |
.413 |
|
76 |
= |
.020 |
|
39 |
= |
.0995 |
|
4 |
= |
.209 |
|
27/64 |
= |
.4219 |
|
75 |
= |
.021 |
|
38 |
= |
.1015 |
|
3 |
= |
.213 |
|
7/16 |
= |
.4375 |
|
74 |
= |
.0225 |
|
37 |
= |
.104 |
|
7/32 |
= |
.2188 |
|
29/64 |
= |
.4531 |
|
73 |
= |
.024 |
|
36 |
= |
.1065 |
|
2 |
= |
.221 |
|
15/32 |
= |
.4688 |
|
72 |
= |
.025 |
|
7/64 |
= |
.1094 |
|
1 |
= |
.228 |
|
31/64 |
= |
.4844 |
|
71 |
= |
.026 |
|
35 |
= |
.110 |
|
A |
= |
.234 |
|
1/2 |
= |
.500 |
|
70 |
= |
.028 |
|
34 |
= |
.111 |
|
15/64 |
= |
.2344 |
|
33/64 |
= |
.5156 |
|
69 |
= |
.0292 |
|
33 |
= |
.113 |
|
B |
= |
.238 |
|
17/32 |
= |
.5313 |
|
68 |
= | .031 |
32 |
= | .116 |
C |
= | .242 |
35/64 |
= | .5469 | |||
|
1/32 |
= | .0313 |
31 |
= | .120 |
D |
= | .246 |
9/16 |
= | .5625 | |||
|
67 |
= | .032 |
1/8 |
= | .1250 |
1/4 (E) |
= | .250 |
37/64 |
= | .5781 | |||
|
66 |
= | .033 |
30 |
= | .1285 |
F |
= | .257 |
19/32 |
= | .5938 | |||
|
65 |
= | .035 |
29 |
= | .136 |
G |
= | .261 |
39/64 |
= | .6094 | |||
|
64 |
= | .036 |
28 |
= | .1405 |
17/64 |
= | .2656 |
5/8 |
= | .625 | |||
|
63 |
= | .037 |
9/64 |
= | .1406 |
H |
= | .266 |
41/64 |
= | .6406 | |||
|
62 |
= | .038 |
27 |
= | .144 |
I |
= | .272 |
21/32 |
= | .6563 | |||
|
61 |
= | .039 |
26 |
= | .147 |
J |
= | .277 |
43/64 |
= | .6719 | |||
|
60 |
= | .040 |
25 |
= | .1495 |
K |
= | .281 |
11/16 |
= | .6875 | |||
|
59 |
= | .041 |
24 |
= | .152 |
9/32 |
= | .2813 |
45/64 |
= | .7031 | |||
|
58 |
= | .042 |
23 |
= | .154 |
L |
= | .290 |
23/32 |
= | .7188 | |||
|
57 |
= | .043 |
5/32 |
= | .1563 |
M |
= | .295 |
47/64 |
= | .7344 | |||
|
56 |
= | .0465 |
22 |
= | .157 |
19/64 |
= | .2969 |
3/4 |
= | .750 | |||
|
3/64 |
= | .0469 |
21 |
= | .159 |
N |
= | .302 |
49/64 |
= | .7656 | |||
|
55 |
= | .052 |
20 |
= | .161 |
5/16 |
= | .3125 |
25/32 |
= | .7813 | |||
|
54 |
= | .055 |
19 |
= | .166 |
O |
= | .316 |
51/64 |
= | .7969 | |||
|
53 |
= | .0595 |
18 |
= | .1695 |
P |
= | .323 |
13/16 |
= | .8125 | |||
|
1/16 |
= | .0625 |
11/64 |
= | .1719 |
21/64 |
= | .3281 |
53/64 |
= | .8281 | |||
|
52 |
= | .0635 |
17 |
= | .173 |
Q |
= | .332 |
27/32 |
= | .8438 | |||
|
51 |
= | .067 |
16 |
= | .177 |
R |
= | .339 |
55/64 |
= | .8594 | |||
|
50 |
= | .070 |
15 |
= | .180 |
11/32 |
= | .3438 |
7/8 |
= | .875 | |||
|
49 |
= | .073 |
14 |
= | .182 |
S |
= | .348 |
57/64 |
= | .8906 | |||
|
48 |
= | .076 |
13 |
= | .185 |
T |
= | .358 |
29/32 |
= | .9063 | |||
|
5/64 |
= | .0781 |
3/16 |
= | .1875 |
23/64 |
= | .3594 |
59/64 |
= | .9219 | |||
|
47 |
= | .0785 |
12 |
= | .189 |
U |
= | .368 |
15/16 |
= | .9375 | |||
|
46 |
= | .081 |
11 |
= | .191 |
3/8 |
= | .375 |
61/64 |
= | .9531 | |||
|
45 |
= | .082 |
10 |
= | .1935 |
V |
= | .377 |
31/32 |
= | .9688 | |||
|
44 |
= | .086 |
9 |
= | .196 |
W |
= | .386 |
63/64 |
= | .9844 |
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