| Screw Size |
|
Tap Drill |
Close Fit |
Loose Fit |
| |
Inches |
TPI |
Size |
Inches |
Size |
Inches |
Size |
Inches |
| 0 |
0.0600 |
80 |
3/64 |
0.0469 |
52 |
0.0635 |
50 |
0.0700 |
| 1 |
0.0730 |
64 |
53 |
0.0595 |
48 |
0.0760 |
46 |
0.0810 |
| 1 |
0.0730 |
72 |
53 |
0.0595 |
48 |
0.0760 |
46 |
0.0810 |
| 2 |
0.0860 |
56 |
50 |
0.0700 |
43 |
0.0890 |
41 |
0.0960 |
| 2 |
0.0860 |
64 |
50 |
0.0700 |
43 |
0.0890 |
41 |
0.0960 |
| 3 |
0.0990 |
48 |
47 |
0.0785 |
37 |
0.1040 |
35 |
0.1100 |
| 3 |
0.0990 |
56 |
45 |
0.0820 |
37 |
0.1040 |
35 |
0.1100 |
| 4 |
0.1120 |
36 |
44 |
0.0860 |
32 |
0.1160 |
30 |
0.1285 |
| 4 |
0.1120 |
40 |
43 |
0.0890 |
32 |
0.1160 |
30 |
0.1285 |
| 4 |
0.1120 |
48 |
42 |
0.0935 |
32 |
0.1160 |
30 |
0.1285 |
| 5 |
0.1250 |
40 |
38 |
0.1015 |
30 |
0.1285 |
29 |
0.1360 |
| 5 |
0.1250 |
44 |
37 |
0.1040 |
30 |
0.1285 |
29 |
0.1360 |
| 6 |
0.1380 |
32 |
36 |
0.1065 |
27 |
0.1440 |
25 |
0.1495 |
| 6 |
0.1380 |
40 |
33 |
0.1130 |
27 |
0.1440 |
25 |
0.1495 |
| 8 |
0.1640 |
32 |
29 |
0.1360 |
18 |
0.1695 |
16 |
0.1770 |
| 8 |
0.1640 |
36 |
29 |
0.1360 |
18 |
0.1695 |
16 |
0.1770 |
| 10 |
0.1900 |
24 |
25 |
0.1495 |
9 |
0.1960 |
7 |
0.2010 |
| 10 |
0.1900 |
32 |
21 |
0.1590 |
9 |
0.1960 |
7 |
0.2010 |
| 12 |
0.2160 |
24 |
16 |
0.1770 |
2 |
0.2210 |
I |
0.2280 |
| 12 |
0.2160 |
28 |
14 |
0.1820 |
2 |
0.2210 |
I |
0.2280 |
| 14 |
0.2420 |
20 |
10 |
0.1935 |
D |
0.2460 |
F |
0.2570 |
| 14 |
0.2420 |
24 |
7 |
0.2010 |
D |
0.2460 |
F |
0.2570 |
| 1/4 |
0.2500 |
20 |
7 |
0.2010 |
F |
0.2570 |
H |
0.2660 |
| 1/4 |
0.2500 |
28 |
3 |
0.2130 |
F |
0.2570 |
H |
0.2660 |
| 5/16 |
0.3125 |
18 |
F |
0.2570 |
P |
0.3230 |
Q |
0.3320 |
| 5/16 |
0.3125 |
24 |
I |
0.2720 |
P |
0.3230 |
Q |
0.3320 |
| 3/8 |
0.3750 |
16 |
5/16 |
0.3125 |
W |
0.3860 |
X |
0.3970 |
| 3/8 |
0.3750 |
24 |
Q |
0.3320 |
W |
0.3860 |
X |
0.3970 |
| 7/16 |
0.4375 |
14 |
U |
0.3680 |
29/64 |
0.4531 |
15/32 |
0.4687 |
| 7/16 |
0.4375 |
20 |
25/64 |
0.3906 |
29/64 |
0.4531 |
15/32 |
0.4687 |
| 1/2 |
0.5000 |
13 |
27/64 |
0.4219 |
33/64 |
0.5156 |
17/32 |
0.5312 |
| 1/2 |
0.5000 |
20 |
29/64 |
0.4531 |
33/64 |
0.5156 |
17/32 |
0.5312 |
|