Copper Bolts,Brass 1.ISO,ANSI,CE,JIS,DIN,BS& non-standard fastener supply 2.ROHS is capable 3.Grade:4.8 ,6 ... .8,8.8,9.8.... Copper Bolts,Copper Bolt,Brass Bolts.1.What’s the specification ... of our Products ? MaterialsCarbon steel,Stainless steel,Alloy steel,Copper,Aluminum ...