1.Material:titanium Gr2,Gr3,Gr5,6AL4V ELI. 2.High tensile strength 3.Size:M3--64 4.Surface:Polishing 5.OEM Titanium Torx Head Screws1>Titanium bolt and screw: Item NameTitanium FastenerMaterialPure Titanium and Alloy TitaniumGradeGr1,Gr2,Gr3,Gr4,Gr5(Ti-6AL-4V),Gr7,Gr9,Gr12, etc.StandardGB,DIN, IFI,UNC,UNC,JIS, BS,BSW ,ISODIN912,913,914,915,916,931,933,7991,7984,6921,ISO 7380,JIS,BS etc. ...