Hex Head Cap Screw, System of Measurement Inch, Basic Material Stainless Steel, Material Grade 316, Fastener Finish NL-19 (SM), Dia. /Thread Size 1/2 In. -13, Fastener Length 1 in, Fastener Thread Direction Right Hand, Fastener Thread Type UNC (Coarse), Fastener Thread Style Fully Threaded, Fastener Industry Standards ASME B 18.2. 1, Head Type Hex, Min. Thread Length 1 in, Head Height 5/16 in, Head Width 3/4 in, Package Quantity 5