材质 
M4
0.7
6.5
9
7.66
7.5
7.14
4.5
4.2
7
6.78
0.5
M5
0.8
7.5
11.8
8.79
9
8.64
5
4.7
8
7.78
0.5
M6
1
9.5
14.2
11.05
11
10.57
6
5.7
10
9.78
0.8
M8
1.25
12.5
17.9
14.38
14
13.57
8
7.64
13
12.73
0.8
M10
1.5
15
21.8
17.77
18
17.57
10
9.64
16
15.73
0.8
M12
1.75
17
26
20.03
22
21.48
12
11.57
18
17.73
1
M14
2
20
29.9
23.35
26
25.48
14
13.3
21
20.67
1
M16
2
23
34.5
26.75
30
29.48
16
15.3
24
23.67
1
M20
2.5
28
42.8
32.95
32
31
20
18.7
30
29.16
1.2
M24
3
34
46
39.55
36
35
24
22.7
36
35
1.2