材质 
M6
1
15.1
13.3
5.35
4.4
3.6
3
2.755
0.5
6.3
5.84
M8
1.25
19.1
17.3
7.19
5.4
4.6
4.48
3.6
0.5
8.36
7.8
M10
1.5
24.3
22.16
9.03
6.45
5.55
5.48
4.6
0.5
10.36
9.8
M12
1.75
29.3
27.16
10.86
8.45
7.55
6.348
5.6
0.8
12.43
11.76
M14
2
33.6
31
12.7
9.45
8.55
7.9
6.55
0.8
14.43
13.76