ISO 8740 dimensions — Parallel grooved pins with chamfer point and full-length diamond grooves
- Edition
- dimensions from the 1997 edition · current edition ISO 8740:2025
| Size | c1Chamfer | c2End chamfer | aGroove allowance | d2Expanded diameter |
|---|---|---|---|---|
| max | ||||
| 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 |
Dimensions from ISO 8740:1997. The current edition is ISO 8740:2025.
Load values — Table 1 · Minimum shear strength, double
kN · ISO 8740:1997 Table 1| Size | St (steel only, footnote 1) · Minimum shear strength, double |
|---|---|
| 1,5 | 1.6 |
| 2 | 2.84 |
| 2,5 | 4.4 |
| 3 | 6.4 |
| 4 | 11.3 |
| 5 | 17.6 |
| 6 | 25.4 |
| 8 | 45.2 |
| 10 | 70.4 |
| 12 | 101.8 |
| 16 | 181 |
| 20 | 283 |
| 25 | 444 |