ISO 8740 dimensions — Parallel grooved pins with chamfer point and full-length diamond grooves
2025 edition, current · 13 sizes, 1.5 – 25 see the cross-reference →
✓We supply to ISO 8740. Name it on your order.
ISO 8740 dimensions
| Thread size | cChamfer (mm) | cEnd Chamfer (max) (mm) | aGroove Allowance (mm) | d₂Groove Diameter (mm) |
|---|---|---|---|---|
| 1.5 | 0.12 | 0.6 | 0.2 | 1.6 |
| 2 | 0.18 | 0.8 | 0.25 | 2.15 |
| 2.5 | 0.25 | 1 | 0.3 | 2.65 |
| 3 | 0.3 | 1.2 | 0.4 | 3.2 |
| 4 | 0.4 | 1.4 | 0.5 | 4.25 |
| 5 | 0.5 | 1.7 | 0.63 | 5.25 |
| 6 | 0.6 | 2.1 | 0.8 | 6.3 |
| 8 | 0.8 | 2.6 | 1 | 8.3 |
| 10 | 1 | 3 | 1.2 | 10.35 |
| 12 | 1.2 | 3.8 | 1.6 | 12.35 |
| 16 | 1.6 | 4.6 | 2 | 16.4 |
| 20 | 2 | 6 | 2.5 | 20.5 |
| 25 | 2.5 | 7.5 | 3 | 25.5 |
13 of 13 sizes shown.