DIN 6926 hexagon lock nut with flange, M20, Article number 6926201. Property class / material: steel class 8, surface finish zinc plated. Hexagon Lock Nut with Flange manufactured to DIN 6926 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.