DIN 6330-B hexagon nut (form B), M6, Article number 6330B1006. Property class / material: steel class 10, surface finish plain. Hexagon Nut manufactured to DIN 6330 with ISO metric (M) thread, coarse pitch, fully threaded. Standard parts to the same standard, property class, dimensions and surface finish are interchangeable between manufacturers; confirm the controlling standard revision, any class-society or application approval, and the mating thread before substitution.