Dimensions for ISO 8748 Spiral dowel pins, heavy duty
| d1 | d2 | a | s | Min. shear strength, double, kN | |||
|---|---|---|---|---|---|---|---|
| nom. | before mounting max | min | before mounting max. | = | a | b | |
| 1.5 | 1.71 | 1.61 | 1.4 | 0.5 | 0.17 | 1.9 | 1.45 |
| 2 | 2.21 | 2.11 | 1.9 | 0.7 | 0.22 | 3.5 | 2.5 |
| 2.5 | 2.73 | 2.62 | 2.4 | 0.7 | 0.28 | 5.5 | 3.8 |
| 3 | 3.25 | 3.12 | 2.9 | 0.9 | 0.33 | 7.6 | 5.7 |
| 3.5 | 3.79 | 3.64 | 3.4 | 1 | 0.39 | 10 | 7.6 |
| 4 | 4.3 | 4.15 | 3.9 | 1.1 | 0.45 | 13.5 | 10 |
| 5 | 5.35 | 5.15 | 4.85 | 1.3 | 0.56 | 20 | 15.5 |
| 6 | 6.4 | 6.18 | 5.85 | 1.5 | 0.67 | 30 | 23 |
| 8 | 8.55 | 8.25 | 7.8 | 2 | 0.9 | 53 | 41 |
| 10 | 10.65 | 10.3 | 9.75 | 2.5 | 1.1 | 84 | 64 |
| 12 | 12.75 | 12.35 | 11.7 | 3 | 1.3 | 120 | 91 |
| 14 | 14.85 | 14.4 | 13.6 | 3.5 | 1.6 | 165 | - |
| 16 | 16.9 | 16.4 | 15.6 | 4 | 1.8 | 210 | - |
| 20 | 21 | 20.4 | 19.6 | 4.5 | 2.2 | 340 | - |