'Hex Head Cap Screw, System of Measurement Inch, Head Type Hex, Dia./Thread Size 7/8 In.-9, Thread Type UNC (Coarse), Fastener Length 4 In., Min. Thread Length 2 In., Basic Material Steel, Screw Grade/Class Grade 5, Fastener Finish Zinc Plated, Thread Style Partially Threaded, Thread Direction Right Hand, Head Height 35/64 In., Head Width 1-5/16 In., Proof Load 74,000 to 85,000 psi, Screw Industry Standards ASME B18.2.1, Package Quantity 5'