Hex head screws NAAMS abide with ANSI B18.2.3.1M dimensional specifications and ASTM F568M, class 10.9 material specifications. Nominal size, pitch, and length start at M5-0.8 x 6 and go up to M36-4.0 x 200 and come with both blue-coated and uncoated.
Nom. Scr. & Thread Pitch
D
S
E
K
W
F
R
C
Dw
Max
Min
Max
Min
Max
Min
Max
Min
Min
Max
Min
Max
Min
Min
M12 x 1.75
12
11.73
18
17.73
20.78
20.03
7.76
7.24
5.2
13.7
0.6
0.6
0.3
16.6
M14 x 2
14
13.73
21
20.67
24.25
23.35
9.09
8.51
6.2
15.7
0.6
0.6
0.3
19.6
M16 x 2
16
15.73
24
23.67
27.71
26.75
10.32
9.68
7
17.7
0.6
0.8
0.4
22.5
M20 x 2.5
20
19.67
30
29.16
34.64
32.95
12.88
12.12
8.8
22.4
0.8
0.8
0.4
27.7
M24 x 3
24
23.67
36
35
41.57
39.55
15.44
14.56
10.5
26.4
0.8
0.8
0.4
33.2
M30 x 3.5
30
29.67
46
45
53.12
50.85
19.48
17.92
13.1
33.4
1
0.8
0.4
42.7
M36 x 4
36
35.61
55
53.8
63.51
60.79
23.38
21.62
15.8
39.4
1
0.8
0.4
51.1
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