... Standard:DIN912,DIN9 best price gr2 M3 titanium allen screw for industrypure titanium and alloy titanium screw grade:Gr1,Gr2,Gr3,Gr4,Gr5( ... GB,DIN, IFI,UNC,UNC,JIS Item NameTitanium FastenerMaterialPure Titanium and Alloy TitaniumGradeGr1,Gr2,Gr3,Gr4,Gr5(Ti-6AL ... etc.ApplicationsEquipment accessories: airplane, ship, bicycle, motorcycle, auto, medical, chemical, wheelchair, sports, anchor, weapon, etc.