Castle Nut, Finish Black Oxide, Material Steel, Material Grade/Class Grade 5, Thread Size 1 In.-14, Hex Width 1 1/2 in, Hex Height 55/64 in, Hex Type Standard Hex, Lock Type Slotted Castle, Dimensional Standards ASME B18.2.2, System of Measurement Inch, Thread Direction Right Hand, For Pin Diameter 7/32 in, Maximum Slot Width 0.3 in, Pack Size Small Pack, Package Quantity 5