Hex Head Cap Screw Head Type Hex Diameter M20 Grade 5 Material Carbon Steel Finish Zinc Plated Thread Size 2.50mm Thread Type Coarse Length under Head 45mm Thread Length 45mm Head Height 12.5mm Head Width 30mm Thread Style Fully Threaded Thread Direction Right Hand Proof Load 87 000 psi Tensile Strength 120 350 psi Rockwell Hardness C22 to C34 Meets/Exceeds DIN 933 Package Quantity 10