Abstract: A threaded fastener for use with bolt comprises a housing having a central bore that includes a bolt insertion aperture and a plurality of cylindrical and frustoconical steps. A plurality of insert segments are placed within the central bore. Each insert segment includes an inwardly facing threaded portion and a front projection extending outwardly from the threaded portion. The front projection has a beveled edge arranged for sliding contact with a corresponding beveled portion of the housing. The front projection also has outwardly extending portion that cooperates with a ledge in the housing bore to limit longitudinal movement of the insert segment in the housing. A rear projection extends inwardly from the threaded portion and is arranged for sliding contact with a second beveled surface of the housing. An end cap retains the insert segments in the housing.

Abstract: A quick locking fastener has a base defining an interior chamber and forward and rearward portions. Plural generally contiguous internally threaded insert nut segments are in the interior chamber of the base, having a tail remote from the forward portion of the base. The nut segments have a first bevel exterior surface adjacent the forward portion of the base, a cylindrical surface adjacent the first bevel surface, and a second exterior bevel disposed on the tail, spaced apart and coaxial with the first bevel surface. A rearward disposed end cap having a bevel and a circular compresssion spring circumferentially disposed about a third bevel surface engages and biases the nut segments towards the front of the base. A retainer ring having a band surrounding the end cap has inwardly directed tangs preventing rotation of the insert segments.