... process hexagon nuts made of different materials. white-zinc plated 2.prompt delivery 3.ISO9001 ... : white zinc-platingMaterialBrass, Carton steel, Stainless steel, Alloy steelSurface TreatmentChrome plating, Silver plating, Zinc plating, Nickel plating, Tin-plating, Passivate ... Heading, Threading, Angle-cutting/Slotting, Heat treatment, Plating, Anti-slipping patchCategory we can process1. by ...