Metric Socket Head Cap Screw Head Type Flat Material Carbon Steel Black Oxide Finish Thread Size 1mm Drive Type Hex Socket Drive Size 4mm Thread Type Coarse Thread Style Fully Threaded Thread Direction Right Hand Length under Head 25mm Thread Length 25mm Head Height 3.72mm Thread Dia M6 Head Dia 13.44mm Rockwell Hardness C32 to C39 Min Tensile Strength 1000 N/mm2 Meets/Exceeds DIN7991 Package Quantity 100