Jam Nut, Finish Black Oxide, Material Grade/Class Grade 2, Material Alloy Steel, Hex Width 1 7/16 in, Hex Height 27/64 in, Manufacturer Location Globally Sourced, Material Quality Standards TCMA, System of Measurement Inch, Thread Direction Right Hand, Color Black, RoHS Compliant Yes, Thread Type Coarse, Package Quantity 5.