M3 x 16mm Hex Socket Head Cap Machine Screw Bolt Black 100 Pcs Product Name : Socket Head Cap Bolt;Material : 12.9 Grade Alloy Steel;Color : Black Screw Standard : M3 x 16mm;Thread Dia. : 3mm;Thread Pitch : 0.5mm Thread Length : 16mm / 0.6";Head Diameter : 5.5mm Head Height : 3mm;Hex KeySize : 2.5mm Weight : 100g;Package Content : 100(+/-2%) x Socket Head Cap Bolt