Il s’agit des filetages UNC les plus utilisés pour les assemblages mécaniques.
| UNC | Diamètre extérieur (mm) | Pas (mm) | Diamètre de perçage (mm) |
|---|---|---|---|
| Nr. 4-40 UNC | 2.845 | 0.635 | 2.3 |
| Nr. 5-40 UNC | 3.175 | 0.635 | 2.6 |
| Nr. 6-32 UNC | 3.505 | 0.794 | 2.7 |
| Nr. 8-32 UNC | 4.166 | 0.794 | 3.5 |
| Nr. 10-24 UNC | 4.826 | 1.058 | 3.8 |
| Nr. 12-24 UNC | 5.486 | 1.058 | 4.5 |
| 1/4 -20 UNC | 6.350 | 1.270 | 5.1 |
| 5/16 -18 UNC | 7.938 | 1.411 | 6.5 |
| 3/8 -16 UNC | 9.525 | 1.588 | 7.9 |
| 7/16 -14 UNC | 11.112 | 1.814 | 9.3 |
| 1/2 -13 UNC | 12.700 | 1.954 | 10.7 |
| 9/16 -12 UNC | 14.288 | 2.117 | 12.3 |
| 5/8 -11 UNC | 15.875 | 2.309 | 13.5 |
| 3/4 -10 UNC | 19.050 | 2.540 | 16.5 |
| 7/8 -9 UNC | 22.225 | 2.822 | 19.3 |
| 1 -8 UNC | 25.400 | 3.175 | 22.25 |
EREM usinage 