Abstract: A nut retaining socket wrench with a replaceable, resilient nut bore retainer. The nut bore retainer consists of a recessed, cylindrical piece containing an offset looped spring within the socket. A set screw and support plate confine the retainer to the socket without infringing on its mobility. A helical spring provides the moving force for the retainer. The offset spring applies pressure to the side of the nut bore to position and retain the nut until displaced by the bolt. The nut is therefore held within the socket both while it is being screwed onto and off of the bolt.