The Castle Hex Lock Nut is a Hex shape and a slot cut through one end, mounted on a threaded fastener after it's tightened in its designated location. The slot aligns with a drilled hole through the threaded fastener. A cotter pin is then inserted through the hole and the slot, preventing the nut from rotating and loosening. Castle nuts are used with threaded fasteners on axles, shafts, and other rotating components within a machine.Attributes:• Ensures a tight and secure connection between components, reducing the risk of failure in the machine• Has high strength and wear resistanceApplications: The Castle Hex Lock Nut utilizes its shape and a precisely machined hole to secure a threaded fastener (bolt, screw) in place, preventing loosening due to vibration or torque.