ISO 2901 - Metric Trapezoidal Screw Threads
Dimensions of ISO metric trapezoidal screw threads.
Dimensions of ISO metric trapezoidal screw threads are indicated in the table below.
| Outside Diameter Screw (mm) | Pitch (mm) | Inside Diameter Nut (mm) | Crest Nut (mm) | Outside Clearance (mm) | Inside Clearance (mm) |
|---|---|---|---|---|---|
| 8 | 1.5 | 6.5 | 0.55 | 0.15 | 0.15 |
| 10 | 1.5 | 8.5 | 0.55 | 0.15 | 0.15 |
| 10 | 2 | 8.0 | 0.73 | 0.25 | 0.25 |
| 12 | 2 | 10.0 | 0.73 | 0.25 | 0.25 |
| 12 | 3 | 9.0 | 1.10 | 0.25 | 0.25 |
| 16 | 2 | 14.0 | 0.723 | 0.25 | 0.25 |
| 16 | 4 | 12.0 | 1.46 | 0.25 | 0.25 |
| 20 | 2 | 18.0 | 0.73 | 0.25 | 0.25 |
| 20 | 4 | 16.0 | 1.46 | 0.25 | 0.25 |
| 24 | 3 | 21.0 | 1.10 | 0.25 | 0.25 |
| 24 | 5 | 19.0 | 1.83 | 0.25 | 0.25 |
