Tapping screw 1) Dimensions:M3-32Xlength 2) Color:Blue,green,yellow,black, ... .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, Black ...