材质 
M4
0.7
2.1
8
6
7
5.5
20
18
1.9
1.1
2.3
1.7
10.5
8.5
4.6
3.2
M5
0.8
2.4
11
8
9
7.5
26
24
2.3
1.5
2.8
2.3
13
11
6.5
4
M6
1
3
13
10
11
9
33
30
2.3
1.5
3.3
2.7
17
15.00
8
5
M8
1.25
4
16
13
12.5
10.5
39
36
2.8
2
4.4
3.6
20
18
10
6.5
M10
1.5
4.5
20
17
16.5
14.5
51
48
4.4
3.6
5.4
4.6
25
23
12
8
M12
1.75
5.3
23
20
19.5
17.5
65
62
4.9
4.1
6.4
5.6
33.5
31
14
10
M16
2
6
29
26
23
21
73
70
6.4
5.6
7.5
6.5
37.5
35
17
13
M20
2.5
7.5
35
32
29
27
90
86
6.9
6.1
8
7
46.5
44
21
16
M24
3
9
44
41
37.5
35
110
106
9.4
8.6
10.5
9.5
56.5
53.5
25
20