Hex Nut, Hex Type Standard Hex, Finish Zinc Plated, Material Grade/Class Not Graded, Material Steel, Thread Size 9/16 In.-12, Hex Width 7/8 in, Hex Height 31/64 in, Dimensional Standards ASME B18.2.2, System of Measurement Inch, Thread Direction Right Hand, Pack Size Bulk Pack, Removable Yes, Rockwell Hardness C24 to C32, Thread Type Coarse, Package Quantity 1000