BS EN 14399 Part 3: Basic bolt dimensions (HR Bolts)
| Size (d) |
M12 | M16 | M20 | M22 | M24 | M27 | M30 | M36 |
|---|---|---|---|---|---|---|---|---|
| Pitch | 1.75 | 2 | 2.5 | 2.5 | 3 | 3 | 3.5 | 4 |
| b (l <=125) |
30 | 38 | 46 | 50 | 54 | 60 | 66 | 78 |
| b (125< l <=200 |
– | 44 | 52 | 56 | 60 | 66 | 72 | 84 |
| b (l >200) |
– | – | 65 | 69 | 73 | 79 | 85 | 97 |
| ds | 11.30-12.70 | 15.30-16.70 | 19.16-20.84 | 21.16-22.84 | 23.16-24.84 | 26.16-27.84 | 29.16-30.84 | 35.00-37.00 |
| e (min) |
23.91 | 29.56 | 35.03 | 39.55 | 45.20 | 50.85 | 55.37 | 66.44 |
| k (nom) |
7.5 | 10 | 12.5 | 14 | 15 | 17 | 18.7 | 22.5 |
| k | 7.05-7.95 | 9.25-10.75 | 11.60-13.40 | 13.10-14.90 | 14.10-15.90 | 16.10-17.90 | 17.65-19.75 | 21.45-23.55 |
| s | 21.16-22 | 26.16-27 | 31.00-32 | 35.0-36 | 40.0-41 | 45.0-46 | 59.0-50 | 58.8-60 |
Dimensions in millimetres
↫ Go backWhilst the information is provided in good faith, Andrews Fasteners Ltd are not under any responsibility or liability in respect of errors or information that was found to be incorrect or for any reliance the user may place on it.