Metric Socket Head Cap Screw Head Type Flat Material Carbon Steel Black Oxide Finish Thread Size 1.75mm Drive Type Hex Socket Drive Size 8mm Thread Type Coarse Thread Style Fully Threaded Thread Direction Right Hand Length under Head 30mm Thread Length 30mm Head Height 7.4mm Thread Dia M12 Head Dia 26.88mm Rockwell Hardness C32 to C39 Min Tensile Strength 1000 N/mm2 Meets/Exceeds DIN7991 Package Quantity 50