self clinching nut 1.material:metal,aluminum,stainless steel 2.over 10 years manufacturer 3.free sample ... pem nut Size:As standard Material:: Carbon steel,stainless steel,aluminum Finish: zinc,black,chrome,nickel Quality: High-quality raw material, strict ... )4.Bronze: C51000, C52100, C54400, etc5.Iron: 1213, 12L14,12156.Aluminum: Al6061, Al6063 etc7,.Carbon steel:C1006,C1010,C1018,C1022,C1035K ...