3HDY4 Hex Nut, Hex Type Standard Hex, Finish Black Oxide, Material Grade/Class Grade 8, Material Steel, Thread Size 1 3/8 In.-6, Hex Width 2 1/32 in, Hex Height 1 11/64 in, Manufacturer Location Globally Sourced, Dimensional Standards ASME B18.2.2, System of Measurement Inch, Thread Direction Right Hand, Pack Size Small Pack, Removable Yes, Rockwell Hardness C26 to C36, Thread Type Coarse