Copper Bolts,Brass 1.ISO,ANSI,CE,JIS,DIN,BS& non-standard ... .8 ,6.8,8.8,9.8.... Copper Bolts,Copper Bolt,Brass Bolts.1.What’s the specification of our Products ? MaterialsCarbon ... ,Mushroom head,Pan head,Countersunk head,Bugle head,Oval head,Hex flange head,Round head,Ball head,Button head...Socket typesPhillip type ...