Castle Nut, Plain, Material Steel, Material Grade/Class Grade 8, Thread Size 1 1/4 In.-7, Hex Width 1 7/8 in, Hex Height 45/64 in, Hex Type Standard Hex, Lock Type Slotted Castle, Dimensional Standards ASME B18.2.2, System of Measurement Inch, Thread Direction Right Hand, Overall Height 1 1/16 in, Pack Size Small Pack.