Tabella Filettatura UNF
| DIA | PASSO | DIAM PUNTA |
|---|---|---|
| 0 | 80 | 1.2 |
| 1 | 72 | 1.5 |
| 2 | 64 | 1.8 |
| 3 | 56 | 2.1 |
| 4 | 48 | 2.4 |
| 5 | 44 | 2.6 |
| 6 | 40 | 2.9 |
| 8 | 36 | 3.5 |
| 10 | 32 | 4 |
| 12 | 28 | 4.6 |
| 1/4 | 28 | 5.4 |
| 5/16 | 24 | 6.9 |
| 3/8 | 24 | 8.4 |
| 7/16 | 20 | 9.9 |
| 1/2 | 20 | 11.5 |
| 9/16 | 18 | 13 |
| 5/8 | 18 | 14.5 |
| 3/4 | 16 | 17.4 |
| 7/8 | 14 | 20.4 |
| 1′ | 12 | 23.25 |
| 1’1/8 | 12 | 26.5 |
| 1’1/4 | 12 | 29.75 |
| 1’3/8 | 12 | 33 |
| 1’1/2 | 12 | 36 |