材质 
M4
0.7
8.63
0.7
0.5
3.5
3.2
7
6.64
0.8
0.5
M5
0.8
9.93
0.9
0.7
4.2
3.9
8
7.64
1
0.7
M6
1
12.53
0.9
0.7
5
4.7
10
9.64
1.2
0.9
M8
1.25
16.34
1.1
0.9
6.5
6.14
13
12.57
1.5
1.2
M10
1.5
20.24
1.3
1.1
8
7.64
16
15.57
1.8
1.4
M12
1.75
22.84
1.5
1.3
9.5
9.14
18
17.57
2.0
1.6
M14
2
26.21
1.5
1.3
11
10.3
21
20.16
2.5
2.1
M16
2
30.11
1.7
1.3
13
12.3
24
23.16
2.5
2.1