Newport Fasteners

An all-metal, one-piece, hex-shaped lock nut with a round collar at its back end. The collar is segemented 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 light hex variety has a lesser across the flats dimension resulting in a lighter weight part with the same strength as a heavy hex variety. The full height light hex lock nut has the same locking capability as the heavy hex Flexloc lock nut.