DIN 2174 (≈ DIN 371 ≤ M10; ≈ DIN 376 ≥ M12). With oil grooves; optimum lubrication effect even in deeper threads. Tolerance class: ISO 3X / 6GX = Oversize 0.02 − 0.04 mm.
Application:
For components which are galvanised after threading or which shrink slightly when hardened.