Metric Socket Head Cap Screw Head Type Standard Material A4 Stainless Steel Plain Finish Thread Size 0.50mm Drive Type Hex Socket Drive Size 17mm Thread Type Fine Thread Style Partially Threaded Thread Direction Right Hand Length under Head 80mm Thread Length 75mm Head Height 20mm Thread Dia M20 Head Dia 30mm Rockwell Hardness C39 to C44 Min Tensile Strength 700 N/mm2 Meets/Exceeds DIN912 Package Quantity 5