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GB/T 14-1998
Cup head square neck bolts with large head
Nom
P
dk max
dk min
ds max
ds min
e min
k1 max
k1 min
k max
k min
r max
s max
s min
M5
0.8
13
11.9
5
4.48
5.9
4.1
2.9
3.1
2.5
0.4
5.48
4.52
M6
1
16
14.9
6
5.35
7.2
4.6
3.4
3.6
3
0.5
6.48
5.52
M8
1.25
20
18.7
8
7.19
9.6
5.6
4.4
4.8
4
0.8
8.58
7.42
M10
1.5
24
22.7
10
9.03
12.2
6.6
5.4
5.8
5
0.8
10.58
9.42
M12
1.75
30
28.7
12
10.86
14.7
8.8
7.2
6.8
6
1.2
12.7
11.3
M16
2
38
36.4
16
14.70
19.9
12.9
11.1
8.9
8
1.2
16.7
15.3
M20
2.5
46
44.4
20
18.38
24.9
15.9
14.1
10.9
10
1.6
20.84
19.16
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