Castle Nut, Finish Black Oxide, Material Steel, Material Grade/Class Grade 2, Thread Size 3/4 In.-10, Hex Width 1 1/4 in, Hex Height 47/64 in, Hex Type Heavy Hex, Lock Type Slotted Castle, Dimensional Standards ASME B18.2.2, Material Quality Standards SAE J995, System of Measurement Inch, Thread Direction Right Hand, Color Black, Includes Pin No, Made in North America No, Manufacturer Location Globally Sourced, Maximum Slot Width 0.24 in, Minimum Slot Width 0.18 in, Number of Slots 1