Castle Nut, Finish Zinc Plated, Material Steel, Material Grade/Class Grade 2, Thread Size 1 1/4 In.-7, Hex Width 1 7/8 in, Hex Height 1 1/16 in, Hex Type Standard Hex, Lock Type Slotted Castle, Material Quality Standards ASTM 563, System of Measurement Inch, Thread Direction Right Hand, For Pin Diameter 1/4 in, Maximum Slot Width 0.4 in, Pack Size Small Pack, Package Quantity 10