Hexagonal nuts with collar (1.5 d high)
DIN 6331
Rolled thread. M 6-M12 tempered to strength class 10.9, M14-M42 tempered to strength class 8.8.
* Size not included in DIN, dimensions similar to DIN
Benefits of thread rolling:
- no interrupted fibre orientation
- reduced notch sensitivity
- very good roughness values on the thread flanks and in the base radius