ISO 7042 hexagon nut with clamping part, M6, Article number 7042806ZN5. Property class / material: steel class 8, surface finish zinc plated. Hexagon Nut with Clamping Part manufactured to ISO 7042 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.