材质 
M5
0.8
0.9
0.7
15.5
14.5
8.2
1.95
1.45
4.1
3.9
4.7
5
8
7.64
M6
1
0.9
0.7
18.5
17.5
10.6
2.25
1.75
5.1
4.9
6.64
7
10
9.64
M8
1.25
1.1
0.9
22.5
21.5
13.6
2.75
2.25
6.1
5.9
9.64
10
13
12.57
M10
1.5
1.3
1.1
26.5
25.5
16.9
3.25
2.75
7.1
6.9
12.57
13
16
15.57
M12
1.75
1.3
1.1
30.5
29.5
19.4
3.25
2.75
8.1
7.9
14.57
15
18
17.57
M14
2
1.3
1.1
33.5
32.5
22.4
4.25
3.75
8.1
7.9
16.16
17
21
20.16
M16
2
1.3
1.1
36.5
35.5
25
4.25
3.75
8.1
7.9
18.66
19.5
24
23.16