'Coupling Nut, Nut Style Coupling Nut, System of Measurement Inch, Basic Material Steel, Material Grade Grade 2, Fastener Finish Zinc Chromate, Fastener Thread Direction Right Hand, Dia./Thread Size 9/16 In.-12, Length 2-1/8 In., Fastener Thread Type UNC, Width Across Flats 13/16 In., Package Quantity 5'