Hex Nut, Nut Style Hex Nut, System of Measurement Inch, Steel, Material Grade Grade 5, Fastener Finish Zinc Plated, Fastener Thread Direction Right Hand, Dia. /Thread Size 5/16 In. -24, Fastener Thread Type UNF (Fine), Width Across Flats 1/2 in, Nut Height 17/64 in, Nut Standards ASME B 18.2. 2, Package Quantity 100. This item has been restricted from sale in the following state (s): []