... 316/A4) 2.size:M3-m45 3.other material :(low)carbon steel 4.finish:ZP,YZP,Plain,Black,Pla 1.stainless ... ,316/A4)2.size:M3-m45 3.other material :(low)carbon steel 4.finish:ZP,YZP,Plain,Black,Plain304,316 M8 stainless ... -standard plain washerOur washers:Size : standard or non-standardMaterial : carbon steel / low carbon steel / mild carbon steel / stainless steel (A2/304 , A4/316)Finish : Zinc Plated (CR3 ...