DIN 985 hexagon lock nut, M10, sst 600 h, Article number 985810ZNTSST600. Property class / material: steel class 8, surface finish zinc-nickel, silver. Hexagon Lock Nut manufactured to DIN 985 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.