Il s’agit des filetages UNF les plus utilisés pour les assemblages mécaniques.
| UNF | Diamètre extérieur (mm) | Pas (mm) | Diamètre de perçage (mm) |
|---|---|---|---|
| Nr. 4-48 UNF | 2.845 | 0.529 | 2.4 |
| Nr. 5-44 UNF | 3.175 | 0.577 | 2.6 |
| Nr. 6-40 UNF | 3.505 | 0.635 | 2.9 |
| Nr. 8-36 UNF | 4.166 | 0.705 | 3.5 |
| Nr. 10-32 UNF | 4.826 | 0.794 | 4 |
| Nr. 12-28 UNF | 5.486 | 0.907 | 4.6 |
| 1/4 -28 UNF | 6.350 | 0.907 | 5.4 |
| 5/16 -24 UNF | 7.938 | 1.058 | 6.9 |
| 3/8 -24 UNF | 9.525 | 1.058 | 8.4 |
| 7/16 -20 UNF | 11.112 | 1.270 | 9.9 |
| 1/2 -20 UNF | 12.700 | 1.270 | 11.5 |
| 9/16 -18 UNF | 14.288 | 1.411 | 13 |
| 5/8 -18 UNF | 15.875 | 1.411 | 14.5 |
| 3/4 -16 UNF | 19.050 | 1.588 | 17.4 |
| 7/8 -14 UNF | 22.225 | 1.814 | 20.4 |
| 1 -12 UNF | 25.400 | 2.117 | 23.25 |
EREM usinage 