Hex Head Cap Screw Head Type Hex Diameter M8 Grade 5 Material Carbon Steel Finish Zinc Plated Thread Size 1.25mm Thread Type Coarse Length under Head 20mm Thread Length 20mm Head Height 5.3mm Head Width 13mm Thread Style Fully Threaded Thread Direction Right Hand Proof Load 87 000 psi Tensile Strength 116 000 psi Rockwell Hardness C22 to C34 Meets/Exceeds DIN 933 Package Quantity 100