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GOST 7785-1981
90° flat countersunk head nib bolts with reduced shank
Nom
P
dk
k max
ds
s
k1 min
M5
0.8
10
3
4.48
2
2.3
M6
1
12
4
5.35
2.5
2.8
M8
1.25
16
5
7.19
3
3.5
M10
1.5
20
5.5
9.03
3.2
4.2
M12
1.75
24
7
10.86
3.6
5.7
M16
2
32
9
14.70
4.2
7.5
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