1"-8, THK=55/64", A/F=1-1/2" Slotted Hex Nuts, Finished Nut Pattern, Steel, Zinc Plated

Also known as castellated nuts.Designed to use a cotter pin that fits through the slots to prevent the nut from loosening.Diameter (Nominal): 1"Thread Pitch: 8Thickness (Nominal): 55/64"Across Flats (Basic): 1-1/2"Product Class: Internally Threaded...