Self-tapping screwsMETERIAL:1.Stainless Steel:SS201,SS303,SS304,SS316,SS410,SS4202.Steel:C45(K1045),C46(K1046),C203.Brass:C36000(C26800),C37700(HPb59),C38500(HPb58),C27200CuZn37),C28000(CuZn40)4.Bronze:C51000,C52100,C54400,etc5.Iron:1213,12L14,12156.Aluminum/Aluminum Alloy:Al6061,Al6063 etc7.Carbon steel:C1006,C1010,C1018,C1022,C1035K,C1045,C435#,40CrMo,42CrMo8.Alloy steel:SCM435,10B219.Titanium ...