材质 
M2
0.4
2.4
3.60
2
M2.5
0.45
2.9
4.10
2
M3
0.5
3.9
5.10
3
M4
0.7
5.4
6.60
4
M5
0.8
7.25
8.75
4
M6
1
9.25
10.75
5
M8
1.25
11.1
12.90
7
M10
1.5
14.1
15.90
9
M12
1.75
17.1
18.90
11
M14
2
19.95
22.05
13
M16
2
22.95
25.05
15
M18
2.5
22.05
25.95
16
M20
2.5
28.95
31.05
18
M22
2.5
32.75
34.25
20
M24
3
34.75
37.25
22
M27
3
38.75
41.25
25
M30
3.5
43.75
46.25
28
M33
3.5
47.75
50.25
31
M36
4
53.5
55.50
33
M39
4
56.5
59.50
36
M42
4.5
61.5
64.50
39
M48
5
70.5
73.50
45