ALUMINUM SLEEVE NUT 1.ISO,ANSI,JIS,DIN,BS& non- ... :4.8 ,6.8,8.8,9.8.......... ALUMINUM SLEEVE NUT,ALUMINUM WELD NUT,NUT A good non-standard fastenerS manufacturer ... , pure copper,such as H62,H65,H68...Aluminum is good Aluminum,R200...Meanwhile,we can use other materials accordingto ... ,Oval head,Hex flange head,Round head,Ball head,Button head...Socket typesPhillip type,Pozi type,Eleven type,hexagonal ...