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QC/T 340-2017
Hexagon bolts with serrated flange for automobile
Nom
P
da max
dc max
k max
r
e min
s max
s min
M6
1
7.4
13.6
6.8
3.4
8.56
8
7.64
M8
1|1.25
10
17
8.5
4.3
10.8
10
9.64
M10
1|1.25|1.5
12.6
20.8
9.7
4.3
14.08
13
12.57
M12
1.25|1.5|1.75
16.2
24.7
11.9
6.4
16.32
15
14.57
M14
1.5|2
17.7
28.6
12.9
6.4
19.68
18
17.57
M16
1.5|2
20.7
32.8
15.1
6.4
22.94
21
20.16
M18
1.5|2.5
22.7
36.8
16.6
8
26.5
24
23.16
M20
1.5|2|2.5
24.7
40.9
18.2
8
29.8
27
26.16
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