Self-tapping screwsMETERIAL:1.Stainless Steel:SS201,SS303,SS304,SS316,SS410,SS4202.Steel:C45(K1045),C46(K1046),C203.Brass:C36000(C26800),C37700 ... 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 and Titanium Alloy:TAD,TA1-TA8, ...