材质 
M5
0.8
3.5
3.32
6.5
5.92
4.85
5.15
0.2
5
4.82
1.25
1.5
M6
1
4
3.82
8
7.42
5.85
6.15
0.25
6
5.82
1.5
1.75
M8
1.25
5.5
5.32
10
9.42
7.82
8.18
0.4
8
7.78
2
2.25
M10
1.5
7
6.78
13
12.3
9.82
10.18
0.4
10
9.78
2.5
2.75
M12
1.75
8.5
8.28
17
16.3
11.79
12.21
0.6
13
12.73
3
3.25
M16
2
12
11.73
21
20.16
15.79
16.21
0.6
16
15.73
4
4.3
M20
2.5
15
14.73
27
26.16
19.74
20.26
0.8
21
20.67
5
5.3
M24
3
18
17.73
32
31
21.74
22.26
0.8
24
23.67
6
6.3