1.stainless steel (304/A2,316/A4) 2.size:M3- ... steel 4.finish:ZP,YZP,Plain,Black,Pla 1.stainless steel (304/A2,316/A4)2.size:M3-m45 ... steel 4.finish:ZP,YZP,Plain,Black,Plain304,316 M8 stainless steel washers material: 304 / A2 , 316 / A4size:M3-M45 ... standard plain washerOur washers:Size : standard or non-standardMaterial : carbon steel / low carbon steel / mild carbon steel / stainless steel (A2/304 ...