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GOST 29293-1992
90° Flat countersunk head square neck bolts
Nom
P
s max
s min
dk max
dk min
k max
k min
k1
M12
1.75
12.7
12
23.65
22.35
10.45
9.55
6.5
M16
2
16.7
16
28.65
27.35
12.55
11.45
7.5
M20
2.5
20.84
20
35.8
34.2
12.55
11.45
9
M24
3
24.84
24
42.8
41.2
18.65
17.35
11
M36
4
36.84
36
61
59
22.7
19.3
15
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