Длина | Калибр NO | |
Дюйм | мм | BWG |
3/8 | 9.5250 | 19/20 |
2/1 | 12.70 | 20/19/18 |
8/5 | 15.875 | 19/18/17 |
3/4 | 19.050 | 19/18/17 |
7/8 | 22.225 | 18/17 |
1 | 25.400 | 17/16/15/14 |
1-1/4 | 31.749 | 16/15/14 |
1-1/2 | 38.099 | 15/14/13 |
1-3/4 | 44.440 | 14/13/12 |
2 | 50.800 | 14/13/12/11 |
2-1/2 | 63.499 | 13/12/11/10 |
3 | 76.200 | 12/11/10/9/8 |
3-1/2 | 88.900 | 11/10/9/8/7 |
4 | 101.600 | 9/8/7/6/5 |
4-1/2 | 114.300 | 7/6/5 |
5 | 127.000 | 6/5/4 |
6 | 152.400 | 6/5/4 |
7 | 177.800 | 5/4 |