|
Clearance Hole
Drills |
Size of Screw |
|
Tap Drill |
Close Fit |
Free Fit |
No. or Dia. |
Decimal (inch) |
Threads Per Inch |
Drill Size |
Decimal (inch) |
Drill Size |
Decimal (inch) |
Drill Size |
Decimal (inch) |
0 |
0.06 |
80 |
3/64 |
0.0469 |
52 |
0.0635 |
50 |
0.07 |
1 |
0.073 |
64 |
53 |
0.0595 |
48 |
0.076 |
46 |
0.081 |
1 |
0.073 |
72 |
53 |
0.0595 |
48 |
0.076 |
46 |
0.081 |
2 |
0.086 |
56 |
50 |
0.07 |
43 |
0.089 |
41 |
0.096 |
2 |
0.086 |
64 |
50 |
0.07 |
43 |
0.089 |
41 |
0.096 |
3 |
0.099 |
48 |
47 |
0.0785 |
37 |
0.104 |
35 |
0.11 |
3 |
0.099 |
56 |
45 |
0.082 |
37 |
0.104 |
35 |
0.11 |
4 |
0.112 |
36 |
44 |
0.086 |
32 |
0.116 |
30 |
0.1285 |
4 |
0.112 |
40 |
43 |
0.089 |
32 |
0.116 |
30 |
0.1285 |
4 |
0.112 |
48 |
42 |
0.0935 |
32 |
0.116 |
30 |
0.1285 |
5 |
0.125 |
40 |
38 |
0.1015 |
30 |
0.1285 |
29 |
0.136 |
5 |
0.125 |
44 |
37 |
0.104 |
30 |
0.1285 |
29 |
0.136 |
6 |
0.138 |
32 |
36 |
0.1065 |
27 |
0.144 |
25 |
0.1495 |
6 |
0.138 |
40 |
33 |
0.113 |
27 |
0.144 |
25 |
0.1495 |
8 |
0.164 |
32 |
29 |
0.136 |
18 |
0.1695 |
16 |
0.177 |
8 |
0.164 |
36 |
29 |
0.136 |
18 |
0.1695 |
16 |
0.177 |
10 |
0.19 |
24 |
25 |
0.1495 |
9 |
0.196 |
7 |
0.201 |
10 |
0.19 |
32 |
21 |
0.159 |
9 |
0.196 |
7 |
0.201 |
12 |
0.216 |
24 |
16 |
0.177 |
2 |
0.221 |
I |
0.228 |
12 |
0.216 |
28 |
14 |
0.182 |
2 |
0.221 |
I |
0.228 |
14 |
0.242 |
20 |
10 |
0.1935 |
D |
0.246 |
F |
0.257 |
14 |
0.242 |
24 |
7 |
0.201 |
D |
0.246 |
F |
0.257 |
1/4 |
0.25 |
20 |
7 |
0.201 |
F |
0.257 |
H |
0.266 |
1/4 |
0.25 |
28 |
3 |
0.213 |
F |
0.257 |
H |
0.266 |
5/16 |
0.3125 |
18 |
F |
0.257 |
P |
0.323 |
Q |
0.332 |
5/16 |
0.3125 |
24 |
I |
0.272 |
P |
0.323 |
Q |
0.332 |
3/8 |
0.375 |
16 |
5/16 |
0.3125 |
W |
0.386 |
X |
0.397 |
3/8 |
0.375 |
24 |
Q |
0.332 |
W |
0.386 |
X |
0.397 |
7/16 |
0.4375 |
14 |
U |
0.368 |
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 |
0.5 |
13 |
27/64 |
0.4219 |
33/64 |
0.5156 |
17/32 |
0.5312 |
1/2 |
0.5 |
20 |
29/64 |
0.4531 |
33/64 |
0.5156 |
17/32 |
0.5312 |