... Titanium Screw and Fastener1.Grade: Gr1,Gr2,Gr3,Gr4,Gr5(Ti-6AL-4V),Gr7,Gr9,Gr12, etc.2.Standard: GB,DIN, IFI,UNC ... NameTitanium FastenerMaterialPure Titanium and Alloy TitaniumGradeGr1,Gr2,Gr3,Gr4,Gr5(Ti-6AL-4V),Gr7,Gr9,Gr12, etc.StandardGB,DIN, IFI,UNC,UNC,JIS ...