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GOST R52644-2006
Hexagon bolts for high-strength structural bolting
Nom
P
ds
s max
s min
k max
k min
e min
da max
r min
M16
2
16
27
26.16
12.35
11.65
29.9
19
0.6
M18
2.5
18
30
29
13.35
12.65
33.3
21
1.2
M20
2.5
20
34
33
14.35
13.65
35
24
1.2
M22
2.5
22
36
35
15.35
14.65
39.6
26
1.6
M24
3
24
41
40
17.35
16.65
45.2
28
1.6
M27
3
27
46
45
19.42
18.58
50.9
31
1.6
M30
3.5
30
50
49
19.42
18.58
50.9
35
2
M36
4
36
60
58.8
23.42
22.58
60.8
41
2
M42
4.5
42
65
63.1
26.42
25.58
72.1
47
2
M48
5
48
75
73.1
30.42
29.58
83.4
53
2
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