'Hex Head Cap Screw, System of Measurement Inch, Head Type Hex, Dia./Thread Size 9/16 In.-12, Thread Type UNC (Coarse), Fastener Length 6 In., Min. Thread Length 1-3/8 In., Basic Material Steel, Screw Grade/Class Grade 8, Fastener Finish Plain, Thread Style Partially Threaded, Thread Direction Right Hand, Head Height 23/64 In., Head Width 13/16 In., Proof Load 120,000 psi, Screw Industry Standards ASME B18.2.1, Package Quantity 5'