Castle Nut, Finish Zinc Plated, Material Steel, Material Grade/Class Grade 2, Thread Size 3/4 In.-10, Hex Width 1 1/8 in, Hex Height 41/64 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 5/32 in, Maximum Slot Width 0.24 in, Pack Size Small Pack, Package Quantity 20