材质 
M5
0.8
6.2
11.4
5
4.82
7.44
5.6
1.4
0.25
0.1
7
6.64
M6
1
7.5
13.6
6
5.82
8.56
6.8
1.6
0.26
0.11
8
7.64
M8
1.25
10
17
8
7.78
10.8
8.5
2.1
0.36
0.16
10
9.64
M10
1.5
12.5
20.8
10
9.78
14.08
9.7
2.1
0.45
0.2
13
12.57
M12
1.75
15.2
24.7
12
11.73
16.32
11.9
2.1
0.54
0.24
15
14.57
M14
2
17.7
28.6
14
13.73
19.68
12.9
2.1
0.63
0.28
18
17.57
M16
2
20.5
32.8
16
15.73
22.58
15.1
3.2
0.72
0.32
21
20.16