材质 
M4
0.7
9
0.7
0.5
0.4
1.3
3.5
3.2
7
6.64
M5
0.8
12
0.9
0.7
0.6
1.5
4.2
3.9
9
8.64
M6
1
13
0.9
0.7
0.7
1.8
5
4.7
10
9.64
M8
1|1.25
18
1.1
0.9
1.1
2
6.5
6.14
14
13.57
M10
1|1.25|1.5
22
1.3
1.1
1.25
2.2
8
7.64
17
16.57
M12
1.25|1.5|1.75
25
1.5
1.3
1.75
3
9.5
9.14
19
18.48
M14
1.5|2
28
1.5
1.3
1.75
3.2
11.4
10.97
22
21.48
M16
1.5|2
32
1.7
1.5
2
4
13
12.57
24
23.48