... , DIN127, DIN9021, DIN6926 2.Material :Gr1,Gr2,Gr5 1.Standard : DIN912, DIN931, DIN933, DIN985, DIN125, DIN127, DIN9021, DIN69262.Material :Gr1,Gr2 ... : the first cylindrical titanium screw ,titanium head screw , hexagon titanium screw , pan head screw titanium ,titanium & semi—head screws , square head screw titanium , titanium screw slot ...