'Hex Head Cap Screw, System of Measurement Inch, Basic Material Steel, Material Grade Grade 8, Fastener Finish Zinc Yellow, Dia./Thread Size 1/2 In.-20, Fastener Length 6 In., Fastener Thread Direction Right Hand, Fastener Thread Type UNF (Fine), Fastener Thread Style Partially Threaded, Fastener Industry Standards ASME B18.2.1, Head Type Hex, Min. Thread Length 1-1/4 In., Head Height 5/16 In., Head Width 3/4 In., Package Quantity 5'