| Coliai, ″ | Milimetrai, mm | Sriegio žingsnis coliais | ||
|---|---|---|---|---|
| UNC | UN8 | UNF | ||
| 1/8 | 3,175 | 40 | – | 44 |
| 3/16 | 4,762 | 24 | – | 32 |
| 1/4 | 6,35 | 20 | – | 28 |
| 5/16 | 7,937 | 18 | – | 24 |
| 3/8 | 9,525 | 16 | – | 24 |
| 7/16 | 11,112 | 14 | – | 20 |
| 1/2 | 12,7 | 13 | – | 20 |
| 9/16 | 14,288 | 12 | – | 18 |
| 5/8 | 15,875 | 11 | – | 18 |
| 3/4 | 19,05 | 10 | – | 16 |
| 7/8 | 22,225 | 9 | – | 14 |
| 1 | 25,4 | 8 | 8 | 12 (14) |
| 1 1/8 | 28,575 | 7 | 8 | 12 |
| 1 1/4 | 31,75 | 7 | 8 | 12 |
| 1 3/8 | 34,925 | 6 | 8 | 12 |
| 1 1/2 | 38,1 | 6 | 8 | 12 |
| 1 5/8 | 41,275 | – | 8 | – |
| 1 3/4 | 44,45 | – | 8 | – |
| 1 7/8 | 47,625 | – | 8 | – |
| 2 | 50,8 | 4,5 | 8 | – |
| 2 1/4 | 57,15 | 4,5 | 8 | – |
| 2 1/2 | 63,5 | 4 | 8 | – |
| 2 3/4 | 69,85 | 4 | 8 | – |
| 3 | 76,2 | 4 | 8 | – |
| 3 1/4 | 82,55 | 4 | 8 | – |
| 3 1/2 | 88,9 | 4 | 8 | – |
| 3 3/4 | 95,25 | 4 | 8 | – |
| 4 | 101,6 | 4 | 8 | – |
Pastaba: „–“ reiškia, kad atitinkamas žingsnis nenumatytas.