| APPROXIMATE THREADS per INCH |
PITCH mm |
APPROXIMATE THREADS per cm |
| 338 1/2 |
0.075 |
133.33 |
| 317 1/2 |
0.08 |
125.00 |
| 282 1/4 |
0.09 |
111.11 |
| 254 |
0.1 |
100.00 |
| 203 1/4 |
0.125 |
80.00 |
| 169 1/4 |
0.15 |
66.67 |
| 145 1/4 |
0.175 |
57.14 |
| 127 |
0.2 |
50.00 |
| 101 1/2 |
0.25 |
40.00 |
| 84 3/4 |
0.3 |
33.33 |
| 72 1/2 |
0.35 |
28.57 |
| 63 1/2 |
0.4 |
25.00 |
| 56 1/2 |
0.45 |
22.22 |
| 50 3/4 |
0.5 |
20.00 |
| 42 1/4 |
0.6 |
16.67 |
| 36 1/4 |
0.7 |
14.29 |
| 33 3/4 |
0.75 |
13.33 |
| 31 3/4 |
0.8 |
12.50 |
| 28 1/4 |
0.9 |
11.11 |
| 25 1/2 |
1 |
10.00 |
| 20 1/4 |
1.25 |
8.00 |
| 17 |
1.5 |
6.67 |
| 14 1/2 |
1.75 |
5.71 |
| 12 3/4 |
2 |
5.00 |
| 10 1/4 |
2.5 |
4.00 |
| 8 1/2 |
3 |
3.33 |
| 7 1/4 |
3.5 |
2.86 |
| 6 1/4 |
4 |
2.50 |
| 5 3/4 |
4.5 |
2.22 |
| 5 |
5 |
2.00 |
| 4 1/2 |
5.5 |
1.82 |
| 4 1/4 |
6 |
1.67 |
