| UNC kierre | ||||
| Kierre | Nousu kierrettä tuumalla | Nousu mm | Porakoko mm | Porakoko manglaavalle kierretapille mm |
| 1/4 | 20 | 1,270 | 5,2 | 5,8 |
| 5/16 | 18 | 1,411 | 6,6 | 7,3 |
| 3/8 | 16 | 1,588 | 8 | 8,8 |
| 7/16 | 14 | 1,814 | 9,4 | 10,3 |
| 1/2 | 13 | 1,954 | 10,75 | 11,8 |
| 9/16 | 12 | 2,117 | 12,25 | |
| 5/8 | 11 | 2,309 | 13,5 | 14,8 |
| 3/4 | 10 | 2,540 | 16,5 | |
| 7/8 | 9 | 2,822 | 19,5 | |
| 1 | 8 | 3,175 | 22,25 | |
| 1 1/8 | 7 | 3,629 | 25 | |
| 1 1/4 | 7 | 3,629 | 28,25 | |
| 1 3/8 | 6 | 4,234 | 30,75 | |
| 1 1/2 | 6 | 4,234 | 34 | |
| 1 3/4 | 5 | 5,080 | 39,5 | |
| 2 | 4,5 | 5,645 | 45,25 | |
