ISO 7380 Titanium button head bolt 1) Dimensions:M3-32Xlength 2) Color:Blue,green,yellow, ... 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 ...