... 2.Material:Low carbon steel,Stainless steel,etc 3.Finish:Zinc Plated,HDG,etc 4.Size:#6-3 1.What’s the ... Washer?1.Namecarbon steel zinc plated flat washer2.standardUSS or SAE flat washer3.Materialcarbon steel4.Finishzinc plated(Cr,3+);zinc plated(Cr,6+)5.Size ... ,etc.4.FinishPlain;black; zinc plated(Cr,3+);zinc plated(Cr,6+); hot dipped galvanized; dacromet;nickle plated;cadmium plated,etc.5.SizeM3-M80;1 ...