Specifications
Surface Treatments
Certifications
- ISO 9001 - 2015 Certified
- PED 2014/68/EC
- NACE MR0175/ISO 15156-2
- NORSOK M-650
- DFAR
- MERKBLATT AD 2000 W2/W7/W10
21CrMoV5-7 Bolt Dimensions (EN 10269 / 1.7709)
The 21CrMoV5-7 bolt dimensions reference consolidates thread profile, head profile and stud-length conventions for the standard bolt and stud sizes supplied in 21CrMoV5-7 (Werkstoff 1.7709) to EN 10269. Use as the bench reference for procurement drawings and quality-check templates.
Request Custom-Drawing Bolt Dimensions for Your Project
Thread Profile
| Thread system | Standard | Profile angle |
|---|---|---|
| Metric M-thread coarse | ISO 261 / DIN 13 | 60 degrees |
| Metric M-thread fine | ISO 261 / DIN 13 | 60 degrees |
| Unified UN, UNC, UNF | ASME B1.1 | 60 degrees |
| BSW, BSF (legacy) | BS 84 | 55 degrees |
Metric M-Thread Coarse Dimensions
| Nominal | Pitch (mm) | Stress area (mm2) | Tensile area (mm2) |
|---|---|---|---|
| M12 | 1.75 | 84.3 | 113.1 |
| M16 | 2.0 | 157 | 201.1 |
| M20 | 2.5 | 245 | 314.2 |
| M24 | 3.0 | 353 | 452.4 |
| M30 | 3.5 | 561 | 706.9 |
| M36 | 4.0 | 817 | 1018 |
| M42 | 4.5 | 1121 | 1385 |
| M48 | 5.0 | 1473 | 1810 |
| M56 | 5.5 | 2030 | 2463 |
| M64 | 6.0 | 2676 | 3217 |
Head Profile (DIN 931 / ISO 4014)
| Thread | Across flats (mm) | Head height (mm) |
|---|---|---|
| M12 | 19 | 7.5 |
| M16 | 24 | 10 |
| M20 | 30 | 12.5 |
| M24 | 36 | 15 |
| M30 | 46 | 18.7 |
| M36 | 55 | 22.5 |
| M42 | 65 | 26 |
| M48 | 75 | 30 |
Stud-Length Conventions
Overall stud length is measured tap-end-to-nut-end including both thread runs. For DIN 938 tap studs the tap-end thread is 1.0 x diameter; for DIN 939 the tap-end is 1.25 x diameter. The nut-end thread length conventionally equals the maximum nut height plus a thread engagement allowance of 1.5 x diameter for the nut to seat fully.
Related Reference Pages
More reference materials: Datasheet · Torque Chart · Stress-Rupture Tables · FAQ. Back to the 21CrMoV5-7 Alloy Hub.
Satisfaction Survey
