Freer Tool & Supply’s NAAMS socket head cap screws collection supports strong, repeatable fastening for welding fixtures, assembly tooling, and automation builds. Socket head cap screws (SHCS) are a go-to fastener for fixture construction because they deliver high clamping force, fit well in counterbored holes, and are easy to install with standard hex keys—helping keep bases, risers, brackets, and mounting components rigid and aligned through high-cycle production.
NAAMS socket head cap screws are available in sizes from M3 to M24 and lengths ranging from 5 mm to 200 mm. They are manufactured to ANSI B18.3.1M dimensional standards and ASTM A574M material specifications. With our ISO 9001:2015 certification, you can count on top-quality NAAMS components at competitive prices.
Dimensions
Thread Size Nom.
Pitch
A Max.
B Max.
H Max.
W Nom.
E Min.
F Min.
M3
0.5
5.5
3.6
3
2.5
1.02
1.5
M4
0.7
7
4.7
4
3
1.52
2
M5
0.8
8.5
5.7
5
4
1.9
2.5
M6
1
10
6.8
6
5
2.28
3
M8
1.25
13
9.2
8
6
3.2
4
M10
1.5
16
11.2
10
8
4
5
M12
1.75
18
14.2
12
10
4.8
6
M16
2
24
18.2
16
14
6.4
8
M20
2.5
30
22.4
20
17
8
10
M24
3
36
26.4
24
19
9.6
12
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