-6, Hex Width 2 1/4 in, Hex Height 1 9/32 in, Manufacturer Location Globally Sourced, Dimensional Standards ASME B18.2, System of Measurement Inch, Thread Direction Right Hand, Color Black, Pack Size Small Pack, Removable Yes, Rockwell Hardness HRC 32, Thread Type Coarse.Hex Nut, Hex Type Standard Hex, Finish Black Oxide, Material Grade/Class Grade 5, Material Steel, Thread Size 1 1/2 In.