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ASME/ANSI B18.2.3.9M-2001
Metric heavy hexagon head flange screws with reduced shank-Type F
Nom
P
ds max
ds min
d1 max
d1 min
L1 max
L1 min
s max
s min
e max
e min
dc max
k max
da max
Lf max
r min
M5
0.8
5
4.82
4.54
4.36
3.5
2.5
8
7.64
9.24
8.56
11.8
5.8
5.7
1.4
0.2
M6
1
6
5.82
5.39
5.21
4
3
10
9.64
11.55
10.8
14.2
6.6
6.8
1.6
0.25
M8
1.25
8
7.78
7.26
7.04
5
4
13
12.57
15.01
14.08
18
8.1
9.2
2.1
0.4
M10
1.5
10
9.78
9.08
8.86
6
5
15
14.57
17.32
16.32
22.3
10.4
11.2
2.1
0.4
M12
1.75
12
11.73
10.95
10.68
7
6
18
17.57
20.78
19.68
26.6
11.8
13.7
2.1
0.6
M14
2
14
13.73
12.77
12.5
8
7
21
20.16
24.25
22.58
30.5
13.7
15.7
2.1
0.6
M16
2
16
15.73
14.77
14.5
9
8
24
23.16
27.71
25.94
35
15.4
17.7
3.2
0.6
M20
2.5
20
19.67
18.49
18.16
11
10
30
29.16
34.64
32.66
43
18.9
22.4
4.2
0.8
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