Version:
DIN 2174 (≈ DIN 371 ≤ M10; ≈ DIN 376 ≥ M12). With oil grooves; optimum lubrication effect even in deeper threads.
Tolerance class: ISO 2X/6HX.
Form E (lead-in: 1.5 − 2 turns) for deep threads with short run-out. The thread is tapped almost to the bottom of the hole.
The innovative polygon form permits a wide application spectrum. The multi-function layer structure achieves maximum service life even in high-tensile materials.