Metric Socket Head Cap Screw Head Type Standard Material 12.9 Alloy Steel Black Finish Thread Size 0.50mm Drive Type Hex Socket Drive Size 2.5mm Thread Type Coarse Thread Style Fully Threaded Thread Direction Right Hand Length under Head 6mm Thread Length 6mm Head Height 3mm Thread Dia M3 Head Dia 5.5mm Rockwell Hardness C39 to C44 Min Tensile Strength 176 900 psi Meets/Exceeds DIN 912 ISO 4762 Package Quantity 100