... Product Description1. Grade: GR1,Grade2,Grade5(Ti6AI4V)2. Standard: GB, DIN, IFI, UNC, JIS, BS, BSW, ISO3. Production Description: 1 ... Hex socket head ,Taper head ,Hex flange head ,Torx head ,Button head ,Cup head ,Flange head5.Surface Treatment: Polishing, Anodizing, ... corrosion, excellent mechanical strength etc.StandardDIN912/933/7991/7984/6921,ISO 7380,JIS,BSMOQ.50piecesTest and Quality1.ISO 9001: ...