Hex Nut, Nut Style Hex Nut, System of Measurement Inch, Steel, Material Grade Grade 8, Fastener Finish Plain, Fastener Thread Direction Right Hand, Dia. /Thread Size 9/16 In. -18, Fastener Thread Type UNF (Fine), Width Across Flats 7/8 in, Nut Height 31/64 in, Nut Standards ASME B 18.2. 2, Package Quantity 25. This item has been restricted from sale in the following state (s): []