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NF E27-711-1982
High-strength structural bolting assemblies for preloading-system HR-Hex bolt
Nom
P
da max
ds max
ds min
e min
k max
k min
r min
s max
s min
M12
1.75
15.2
12.7
11.3
23.91
7.95
7.05
1.2
22
21.16
M14
2
17.2
14.7
13.3
26.17
9.25
8.35
1.2
24
23.16
M16
2
19.2
16.7
15.3
29.56
10.75
9.25
1.2
27
26.16
M18
2.5
21.7
18.7
17.3
32.95
12.4
10.6
1.5
30
29.16
M20
2.5
24.4
20.84
19.16
35.03
13.4
11.6
1.5
32
31
M22
2.5
26.4
22.84
21.16
39.55
14.9
13.1
1.5
36
35
M24
3
28.4
24.84
23.16
45.2
15.9
14.1
1.5
41
40
M27
3
32.4
27.84
26.16
50.85
17.9
16.1
2
46
45
M30
3.5
35.4
30.84
29.16
55.37
19.75
17.65
2
50
49
M36
4
42.4
37
35
66.44
23.55
21.45
2
60
58.8
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