| P |
Pitch（Coarse thread） |
| Pitch（Fine thread） |
| a |
max |
| da |
max |
| dp |
max=nominal size |
| min |
| e |
min |
| k |
max |
| min |
| kw |
min |
| r |
min |
| s |
max=nominal size |
| min |
| z |
min=nominal size |
| max |
| z1 |
≈ |
|
| 1 |
1.25 |
1.5 |
1.75 |
2 |
2.5 |
3 |
3.5 |
4 |
| - |
- |
- |
- |
- |
2 |
2 |
2 |
3 |
| 3 |
3.75 |
4.5 |
5.25 |
6 |
7.5 |
9 |
10.5 |
12 |
| 6.8 |
9.2 |
11.2 |
13.7 |
17.7 |
22.4 |
26.4 |
33.4 |
39.4 |
| 4 |
5.5 |
7 |
8.5 |
12 |
15 |
18 |
23 |
28 |
| 3.82 |
5.32 |
6.78 |
8.28 |
11.73 |
14.73 |
17.73 |
22.67 |
27.67 |
| 8.79 |
11.05 |
14.38 |
17.77 |
19.92 |
26.75 |
33.53 |
39.98 |
51.28 |
| 5.15 |
6.15 |
7.18 |
9.18 |
11.21 |
14.21 |
17.21 |
21.26 |
25.26 |
| 4.85 |
5.85 |
6.82 |
8.82 |
10.79 |
13.79 |
16.79 |
20.74 |
24.74 |
| 3.4 |
4.1 |
4.8 |
6.2 |
7.6 |
9.7 |
11.8 |
14.5 |
17.3 |
| 0.25 |
0.4 |
0.4 |
0.6 |
0.6 |
0.8 |
0.8 |
1 |
1 |
| 8 |
10 |
13 |
16 |
18 |
24 |
30 |
36 |
46 |
| 7.78 |
9.78 |
12.73 |
15.73 |
17.73 |
23.67 |
29.67 |
35.38 |
45.38 |
| 3 |
4 |
5 |
6 |
8 |
10 |
12 |
15 |
18 |
| 3.25 |
4.3 |
5.3 |
6.3 |
8.36 |
10.36 |
12.43 |
15.43 |
18.43 |
| 1.75 |
2.5 |
3 |
3.5 |
4.5 |
5 |
6 |
8 |
10 |
|
