Name: Heavy hex thin height lock nuts
Description: An all-metal, one-piece, hex-shaped lock nut with a round collar at its back end. The collar is segmented with opposed slots cut into it above each corner of the nut. When the screw or bolt reaches the collar, the slotted portion expands which creates the prevailing torque locking action. The heavy hex, thin height variety is approximately 25% shorter than the full height nut.
Applications: The thin height heavy hex Lock nut is used when an insufficient number of projecting threads are present to use a full height nut, or when a lighterweight nut is required. The nut has a greater wrenching area than the thin height light hex nuts. HexLock nuts maintain their locking strength through 15 removals and re-applications, and at temperatures up to 550°F (450°F if zinc or cadmium plated). They have superior resistance to vibration compared to all other lock nut varieties and do not gall threads.