材质 
M2
0.4
2.6
2.8
2
2.9
2.65
M2.5
0.45
3.3
3.5
2.5
3.5
3.25
M3
0.5
3.8
4
3
3.9
3.65
M3.5
0.6
4.55
4.75
3.5
3.7
3.45
M4
0.7
5.15
5.35
4
3.7
3.45
M5
0.8
6.35
6.6
5
4.3
4.05
M6
1
7.6
7.85
6
4.2
3.95
M7
1
8.65
8.9
7
5.3
5.05
M8
1.25
9.85
10.1
8
4.7
4.45
M10
1.5
12.1
12.5
10
5
4.75
M12
1.75
14.4
14.8
12
5.2
4.95
M14
2
16.8
17.2
14
5.6
5.35
M16
2
19
19.4
16
6.5
6.25
M18
2.5
21.5
22
18
5.6
5.35
M20
2.5
23.7
24.2
20
6.2
5.95
M22
2.5
26.3
26.8
22
6.9
6.65
M24
3
28.6
29.1
24
6.2
5.95
M27
3
32.2
32.7
27
7.1
6.85
M30
3.5
35.2
35.7
30
7
6.75
M33
3.5
38.3
38.8
33
7.8
7.55
M36
4
42.1
42.6
36
7
6.75
M39
4
45.1
45.6
39
7.7
7.45