Hex Nut, Hex Type Heavy Hex, Finish Plain, Material Grade/Class Grade 2H, Material Steel, Thread Size 5/8 In. -11, Hex Width 1 1/16 in, Hex Height 39/64 in, Manufacturer Location Globally Sourced, Dimensional Standards ASME B 18.2. 2, Material Quality Standards ASTM A194, System of Measurement Inch, Thread Direction Right Hand, Industry Standards ASTM A194, Pack Size Small Pack, Removable Yes, Rockwell Hardness HRC 24/35, Tensile Strength Not Applicable, Thread Fit 2B, Thread Type Coarse. This item has been restricted from sale in the following state (s): []