Socket Head Cap Screw Size Chart
This chart contains information on number, metric and fractional number socket head cap screws, along with tap drill information. If all else fails, you may want to use our Drill Size Conversion Table or our Tap Drill Size Calculator. The information available from our sources is usually sufficient for all computer related drill or screw requirements world wide.
|
|
| Number Cap Screws |
| Screw Size | Decimal
Equiv. |
|
Hex Key | Screw Head |
|
Counterbore | Countersink
Diam, 60° (in) |
|
Clearance Drills |
| Diam. (in) |
Height (in) |
Diam. (in) |
Depth (in) |
Norm. Fit |
Close Fit |
|
| No. 0 |
0.060 |
0.050 |
0.096 |
0.060 |
1/8 |
0.060 |
0.074 |
#49 |
#51 |
| No. 1 |
0.073 |
1/16 |
0.118 |
0.073 |
5/32 |
0.073 |
0.087 |
#43 |
#46 |
| No. 2 |
0.086 |
5/64 |
0.140 |
0.086 |
3/16 |
0.086 |
0.102 |
#36 |
3/32" |
| No. 3 |
0.099 |
5/64 |
0.161 |
0.099 |
7/32 |
0.099 |
0.115 |
#31 |
#36 |
| No. 4 |
0.112 |
3/32 |
0.183 |
0.112 |
7/32 |
0.112 |
0.130 |
#29 |
1/8" |
| No. 5 |
0.125 |
3/32 |
0.205 |
0.125 |
1/4 |
0.125 |
0.145 |
#23 |
9/64" |
| No. 6 |
0.138 |
7/64 |
0.226 |
0.138 |
9/32 |
0.138 |
0.158 |
#18 |
#23 |
| No. 8 |
0.164 |
9/64 |
0.270 |
0.164 |
5/16 |
0.164 |
0.188 |
#10 |
#15 |
| No. 10 |
0.190 |
5/32 |
0.312 |
0.190 |
3/8 |
0.190 |
0.218 |
#2 |
#5 |
| No. 12 |
0.216 |
5/32 |
0.345 |
0.216 |
13/32 |
0.216 |
|
1/4" |
15/64" |
| Fractional Cap Screws |
| Screw Size | Decimal
Equiv. |
|
Hex Key | Screw Head |
|
Counterbore | Countersink
Diam, 60° (in) |
|
Clearance Drills |
| Diam. (in) |
Height (in) |
Diam. (in) |
Depth (in) |
Norm. Fit |
Close Fit |
|
| 1/4" |
0.250 |
3/16 |
0.375 |
0.250 |
7/16 |
0.250 |
0.278 |
9/32" |
17/64" |
| 5/16" |
0.313 |
1/4 |
0.469 |
0.313 |
17/32 |
0.313 |
0.346 |
11/32" |
21/64" |
| 3/8" |
0.375 |
5/16 |
0.563 |
0.375 |
5/8 |
0.375 |
0.415 |
13/32" |
25/64" |
| 7/16" |
0.438 |
3/8 |
0.656 |
0.438 |
23/32 |
0.438 |
0.483 |
15/32" |
29/64" |
| 1/2" |
0.500 |
3/8 |
0.750 |
0.500 |
13/16 |
0.500 |
0.552 |
17/32" |
33/64" |
| 9/16" |
0.563 |
7/16 |
0.844 |
0.563 |
29/32 |
0.563 |
|
39/64" |
37/64" |
| 5/8" |
0.625 |
1/2 |
0.938 |
0.625 |
1 |
0.625 |
0.689 |
21/32" |
41/64" |
| 3/4" |
0.750 |
5/8 |
1.125 |
0.750 |
1-3/16 |
0.750 |
0.828 |
25/32" |
49/64" |
| 7/8" |
0.875 |
3/4 |
1.313 |
0.875 |
1-3/8 |
0.875 |
0.963 |
29/32" |
57/64" |
| 1" |
1.000 |
3/4 |
1.500 |
1.000 |
1-5/8 |
1.000 |
1.100 |
1-1/32" |
1-1/64" |
| 1-1/8" |
1.125 |
7/8 |
1.688 |
1.125 |
1-13/16 |
1.125 |
|
1-11/64" |
#26 |
| 1-1/4" |
1.250 |
7/8 |
1.875 |
1.250 |
2 |
1.250 |
1.370 |
1-5/16" |
1-9/32" |
| 1-1/2" |
1.500 |
1 |
2.250 |
1.500 |
2-3/8 |
1.500 |
1.640 |
1-9/16" |
1-17/32" |
| 1-3/4" |
1.750 |
1-1/4 |
2.625 |
1.750 |
2-3/4 |
1.750 |
1.910 |
1-13/16" |
1-25/32" |
| 2" |
2.000 |
1-1/2 |
3.000 |
2.000 |
3-1/8 |
2.000 |
2.180 |
2-1/16" |
2-1/32" |
| Metric Cap Screws |
| Screw Size | Decimal
Equiv. |
|
Hex Key | Screw Head |
|
Counterbore | Countersink
Diam, 60° (mm) |
|
Clearance Drills |
| Diam. (mm) |
Height (mm) |
Diam. (mm) |
Depth (mm) |
Norm. Fit |
Close Fit |
|
| M1.6 |
0.062 |
1.5 |
3.0 |
1.6 |
3.50 |
1.6 |
2.0 |
1.95 |
1.80 |
| M2 |
0.078 |
1.5 |
3.8 |
2.0 |
4.40 |
2.0 |
2.6 |
2.40 |
2.20 |
| M2.5 |
0.098 |
2 |
4.5 |
2.5 |
5.40 |
2.5 |
3.1 |
3.00 |
2.70 |
| M2.6 |
0.102 |
2 |
5.0 |
2.6 |
6.00 |
2.6 |
|
3.20 |
3.00 |
| M3 |
0.118 |
2.5 |
5.5 |
3.0 |
6.50 |
3.0 |
3.6 |
3.70 |
3.40 |
| M4 |
0.157 |
3 |
7.0 |
4.0 |
8.25 |
4.0 |
4.7 |
4.80 |
4.40 |
| M5 |
0.196 |
4 |
8.5 |
5.0 |
9.75 |
5.0 |
5.7 |
5.80 |
5.40 |
| M6 |
0.236 |
5 |
10.0 |
6.0 |
11.20 |
6.0 |
6.8 |
6.80 |
6.40 |
| M8 |
0.315 |
6 |
13.0 |
8.0 |
14.50 |
8.0 |
9.2 |
8.80 |
8.40 |
| M10 |
0.393 |
8 |
16.0 |
10.0 |
17.50 |
10.0 |
11.2 |
10.80 |
10.50 |
| M12 |
0.472 |
10 |
18.0 |
12.0 |
19.50 |
12.0 |
14.2 |
13.00 |
12.50 |
| M14 |
0.551 |
12 |
21.0 |
14.0 |
22.50 |
14.0 |
16.2 |
15.00 |
14.50 |
| M16 |
0.629 |
14 |
24.0 |
16.0 |
25.50 |
16.0 |
18.2 |
17.00 |
16.50 |
| M18 |
0.708 |
14 |
27.0 |
18.0 |
28.50 |
18.0 |
|
19.00 |
18.50 |
| M20 |
0.787 |
17 |
30.0 |
20.0 |
31.50 |
20.0 |
22.4 |
21.00 |
20.50 |
| M24 |
0.944 |
19 |
36.0 |
24.0 |
37.50 |
24.0 |
26.4 |
25.00 |
24.50 |
| M30 |
1.181 |
22 |
45.0 |
30.0 |
47.50 |
30.0 |
33.4 |
31.50 |
31.00 |
| M36 |
1.417 |
27 |
54.0 |
36.0 |
56.50 |
36.0 |
39.4 |
37.50 |
37.00 |
| M42 |
1.653 |
|
63.0 |
42.0 |
66.00 |
42.0 |
45.6 |
44.00 |
43.00 |
| M48 |
1.889 |
|
72.0 |
48.0 |
75.00 |
48.0 |
52.6 |
50.00 |
49.00 |
|
|
Updated: 7/31/11
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