M1.6 x 8mm Hex Bolt Socket Head Cap Machine Screws Black 50 Pcs Product Name : Socket Head Cap Screws;Material : 12.9 Grade Alloy Steel;Color : Black Screw Standard : M1.6x 8m;Thread Dia. : 1.6mm;Thread Pitch : 0.35mm Thread Length : 8mm / 0.3";Head Diameter : 3mm Head Height : 1.6mm;Hex KeySize : 1.5mm Weight : 10g;Package Content : 50(+/-2%) x Socket Head Cap Screws