材质 
M3
0.5
10
5
17
15
7
6
2
4
1.7
1.1
0.8
M4
0.7
12
6
20
18
9
8
2.5
5
1.9
1.3
0.8
M5
0.8
13
7
23
21
9.5
8.5
3
5.5
2.1
1.5
0.8
M6
1
15
9
26
24
10.3
8.7
3.5
6
2.8
2
1
M8
1.25
17
10
29
27
11.8
10.2
5
7
3.6
2.6
1.2
M10
1.5
20
12
36.5
33.5
13
11
6
8
4.3
3.3
1.2