Patent ID: 8342787

Claim:
A threaded fastener comprising: an outer body defining an axis; an inner body at least partially positioned within the outer body, the inner body being movable along the axis relative to the outer body; a plurality of male threaded segments coupled to the outer body and radially supported by the inner body, the plurality of male threaded segments defining a nominal diameter; and at least one biasing member biasing the plurality of male threaded segments inward toward the axis, the plurality of male threaded segments being movable inward toward the axis by the at least one biasing member when the inner body is moved axially from a first position to a second position so that the plurality of male threaded segments define a reduced diameter that is smaller than the nominal diameter, wherein the inner body includes an exterior surface having a first abutment surface portion that is substantially parallel to the axis and that supports the plurality of male threaded segments when the plurality of male threaded segments are arranged to define the nominal diameter, and wherein the exterior surface of the inner body includes a first frusto-conical surface portion axially adjacent the first abutment surface portion and tapering radially inwardly from the first abutment surface portion, the first frusto-conical surface portion supporting the plurality of male threaded segments when the plurality of male threaded segments are arranged to define the reduced diameter.