Castle Nut Finish Black Oxide Material Steel Material Grade/Class Grade 5 Thread Size 1 In.-12 Hex Width 1 1/2 in Hex Height 47/64 in Hex Type Standard Hex Lock Type Slotted Castle Dimensional Standards ASME B18.2.2 Material Quality Standards ASME B18.2.2 SAE J995 System of Measurement Inch Thread Direction Right Hand For Pin Diameter 7/32 in Maximum Slot Width 0.3 in Minimum Slot Width 0.24 in Overall Height 1 1/64 in Pack Size Small Pack Package Quantity 5