Hex Head Cap Screw, System of Measurement Inch, Basic Material Steel, Material Grade Grade 8, Fastener Finish Plain, Dia. /Thread Size 5/8 In. -18, Fastener Length 6 in, Fastener Thread Direction Right Hand, Fastener Thread Type UNF (Fine), Fastener Thread Style Partially Threaded, Fastener Industry Standards ASME B 18.2. 1, Head Type Hex, Min. Thread Length 1 1/2 in, Head Height 25/64 in, Head Width 0.9375 in, Package Quantity 35. This item has been restricted from sale in the following state (s): []