Clearance Drill |
Tap Drill |
|||||||
Screw Size |
Thread Dia. |
No. |
Dec. |
Fraction |
TPI |
No. |
Dec. |
Fraction |
0 |
0.060 |
50 |
0.0700 |
5/64 |
80 |
0.0460 |
3/64 |
|
1 |
0.073 |
46 |
0.0810 |
5/64 |
64 |
53 |
0.0590 |
1/16 |
72 |
53 |
0.0590 |
1/16 |
|||||
2 |
0.086 |
41 |
0.0960 |
3/32 |
56 |
50 |
0.0700 |
5/64 |
64 |
50 |
0.0700 |
5/64 |
|||||
3 |
0.099 |
35 |
0.1100 |
7/64 |
48 |
47 |
0.0785 |
5/64 |
56 |
45 |
0.0820 |
5/64 |
|||||
4 |
0.112 |
30 |
0.1285 |
1/8 |
40 |
43 |
0.0890 |
3/32 |
48 |
42 |
0.0930 |
3/32 |
|||||
5 |
0.125 |
29 |
0.1360 |
9/64 |
40 |
38 |
0.1015 |
7/64 |
44 |
37 |
0.1040 |
7/64 |
|||||
6 |
0.138 |
25 |
0.1495 |
5/32 |
32 |
36 |
0.1060 |
7/64 |
40 |
33 |
0.1130 |
7/64 |
|||||
8 |
0.164 |
16 |
0.1770 |
11/64 |
32 |
29 |
0.1360 |
9/64 |
36 |
29 |
0.1360 |
9/64 |
|||||
10 |
0.190 |
7 |
0.2010 |
13/64 |
24 |
25 |
0.1490 |
5/32 |
32 |
21 |
0.1590 |
5/32 |
|||||
12 |
0.216 |
1 |
0.2280 |
15/64 |
24 |
16 |
0.1770 |
11/64 |
28 |
14 |
0.1820 |
3/16 |
|||||
32 |
13 |
0.1850 |
3/16 |
|||||
1/4" |
0.250 |
H |
0.2660 |
17/64 |
20 |
7 |
0.2010 |
13/64 |
28 |
3 |
0.2130 |
7/32 |
|||||
32 |
0.2188 |
7/32 |
||||||
5/16" |
0.312 |
Q |
0.3320 |
21/64 |
18 |
F |
0.2570 |
1/4 |
24 |
I |
0.2720 |
17/64 |
|||||
32 |
0.2812 |
9/32 |
||||||
3/8" |
0.375 |
X |
0.3970 |
25/64 |
16 |
0.3125 |
5/16 |
|
24 |
Q |
0.3320 |
21/64 |
|||||
32 |
0.3438 |
11/32 |
||||||
(Screw Number * 0.0130) + 0.0600 = Diameter
Drill No. |
Size |
~Fraction |
Drill No. |
Size |
~Fraction |
Drill No. |
Size |
~Fraction |
Drill No. |
Size |
~Fraction |
Z |
0.413 |
1 |
0.2280 |
|
28 |
0.1405 |
9/64 |
55 |
0.0520 |
|
|
Y |
0.404 |
13/32 |
2 |
0.2210 |
7/32 |
29 |
0.1360 |
|
56 |
0.0465 |
3/64 |
X |
0.397 |
3 |
0.2130 |
|
30 |
0.1285 |
1/8 |
57 |
0.0430 |
|
|
W |
0.386 |
25/64 |
4 |
0.2090 |
|
31 |
0.1200 |
|
58 |
0.0420 |
|
V |
0.377 |
3/8 |
5 |
0.2055 |
|
32 |
0.1160 |
|
59 |
0.0410 |
|
U |
0.368 |
6 |
0.2040 |
13/64 |
33 |
0.1130 |
|
60 |
0.0400 |
|
|
T |
0.358 |
23/64 |
7 |
0.2010 |
|
34 |
0.1110 |
|
61 |
0.0390 |
|
S |
0.348 |
11/32 |
8 |
0.1990 |
|
35 |
0.1100 |
7/64 |
62 |
0.0380 |
|
R |
0.339 |
9 |
0.1960 |
|
36 |
0.1065 |
|
63 |
0.0370 |
||
Q |
0.332 |
21/64 |
10 |
0.1935 |
|
37 |
0.1040 |
|
64 |
0.0360 |
|
P |
0.323 |
11 |
0.1910 |
|
38 |
0.1015 |
|
65 |
0.0350 |
||
O |
0.316 |
5/16 |
12 |
0.1890 |
3/16 |
39 |
0.0995 |
|
66 |
0.0330 |
|
N |
0.302 |
13 |
0.1850 |
|
40 |
0.0980 |
|
67 |
0.0320 |
||
M |
0.295 |
19/64 |
14 |
0.1820 |
|
41 |
0.0960 |
|
68 |
0.0310 |
1/32 |
K |
0.281 |
9/32 |
15 |
0.1800 |
|
42 |
0.0935 |
3/32 |
69 |
0.0292 |
|
L |
0.290 |
16 |
0.1770 |
|
43 |
0.0890 |
|
70 |
0.0280 |
||
J |
0.277 |
|
17 |
0.1730 |
11/64 |
44 |
0.0860 |
|
71 |
0.0260 |
|
I |
0.272 |
|
18 |
0.1695 |
|
45 |
0.0820 |
|
72 |
0.0250 |
|
H |
0.266 |
17/64 |
19 |
0.1660 |
|
46 |
0.0810 |
|
73 |
0.0240 |
|
G |
0.261 |
|
20 |
0.1610 |
|
47 |
0.0785 |
5/64 |
74 |
0.0225 |
|
F |
0.257 |
|
21 |
0.1590 |
|
48 |
0.0760 |
|
75 |
0.0210 |
|
E |
0.250 |
1/4 |
22 |
0.1570 |
5/32 |
49 |
0.0730 |
|
76 |
0.0200 |
|
D |
0.246 |
|
23 |
0.1540 |
|
50 |
0.0700 |
|
77 |
0.0180 |
|
C |
0.242 |
|
24 |
0.1520 |
|
51 |
0.0670 |
|
78 |
0.0160 |
1/64 |
B |
0.238 |
|
25 |
0.1495 |
|
52 |
0.0635 |
1/16 |
79 |
0.0145 |
|
A |
0.234 |
15/64 |
26 |
0.1470 |
|
53 |
0.0595 |
|
80 |
0.0135 |
|
27 |
0.1440 |
|
54 |
0.0550 |
|