M3 x 28mm Alloy Steel Hex Bolt Socket Head Cap Screws Black 50 Pcs Product Name : Socket Head Cap Screws;Material : 12.9 Grade Alloy Steel;Color : Black Screw Standard : M3 x 28mm;Thread Dia. : 3mm Thread Pitch : 0.5mm;Thread Length : 28mm / 1.1" Head Diameter : 5.5mm;Head Height : 3mm Weight : 78g;Package Content : 50(+/-2%) x Socket Head Cap Screws