ISO 7380 Titanium button head screw 1) Size:M3~32 2) Grade:Gr5 3) Color:Gold, ... .9 4) Technique: Forged, Rolled.4. Head Styles: Hex socket head ,Taper head ,Hex flange head ,Torx head ,Button head ,Cup head ,Flange head5.Surface Treatment: Polishing, Anodizing ...