材质 
M5
0.8
8.63
7.6
6.1
2
1.4
8
7.64
5.6
4.4
M6
1
10.89
8.9
7.4
2.6
2
10
9.64
6.4
4.9
M8
1.25
14.2
10.94
9.14
3.1
2.5
13
12.57
7.94
6.44
M10
1.5
17.59
13.54
11.74
3.4
2.8
16
15.57
9.54
8.04
M12
1.75
19.85
17.17
15.37
4.25
3.5
18
17.57
12.17
10.37
M14
2
22.78
18.9
16.8
4.25
3.5
21
20.16
13.9
12.1
M16
2
26.17
21.9
19.8
5.7
4.5
24
23.16
15.9
14.1
M20
2.5
32.95
25
22.9
5.7
4.5
30
29.16
19
16.9
M24
3
39.55
30.3
27.8
6.7
5.5
36
35
22.3
20.2
M30
3.5
50.85
35.4
32.4
8.5
7
46
45
26.4
24.3
M36
4
60.79
40.9
38.4
8.5
7
55
53.8
31.9
29.4