NUT PLATES AND THREADED INSERTS AND METHODS OF ASSEMBLING AND INSTALLNG THE SAME

摘要

This disclosure relates to a pre-assembled fastener assembly (10) having a retainer (14), a nut member (18), and a cold expansion mandrel (12) that is forcibly removable after the assembly is installed into an opening (20) of a structural workpiece (22) . The mandrel is captured between a portion (39) of a retainer and a portion (60) of a nut member. The forced removal of the mandrel expands the retainer into the opening, securing the fastener assembly therein. The assembly may also include a cap (16) coupled to the retainer to seal the opening in the structural workpiece. The nut member can be fixed or free-floating with respect to the retainer. In addition, the nut member can be threaded to receive a fastener. The mandrel is recyclable or disposable.