product name: spring washer color:white,black zinc plated,RoHS size:M3-M10 1,Products DetailesMaterial1.Stainless ... steel: SCM435,10B21Specification& gaugeM0.8-M10Surface FinishingZn- Plated,Ni-plated,Passivated,Tin-plated,Sandblast and Anodize,Chromate, Polish,Electro Painting,Black ... Anodize,Plain,Chrome plated,Hot Deep Galvanize(H. D. G. ) etc. ...