DIN 439, steel 04/05, galvanised, blue passivated (A2K)
NoticeDIN 439 shape B has been withdrawn and replaced by ISO 4035. There is some similarity (strength classes for stainless steels changed from 50 to 025 and from 70 to 035) | Widths across flats changed for M10, M12, M14, M22 | Nominal diameter M1.8 removed | Only standard thread is included in ISO 4035.| Fine thread was moved to ISO 8675.
