ALUMINUM SLEEVE NUT 1.ISO,ANSI,JIS,DIN,BS& non-standard fastener ... .Grade:4.8 ,6.8,8.8,9.8.......... ALUMINUM SLEEVE NUT,ALUMINUM WELD NUT,NUT A good non-standard fastenerS ... head,Button head...Socket typesPhillip type,Pozi type,Eleven type,hexagonal type,Torx type,trangle type,slotted point type,square type ...