Detailed Product Description titanium screw ,titanium fasteners.titanium bolts.titanium nail,titanium fasteners:size:M3-M22standard:DIN,ASTM,GB,BSW.DIN912,DIN931,DIN933,DIN934,DIN7991,DIN965,DIN963,DIN966,DIN985,DIN125,DIN9021,DIN551,DIN7984Grade:Gr1,Gr2,Gr3,Gr5,