Patent ID: 7008158

Claim:
A fastener comprising; a) a plate having i) a substantially planar lower surface, ii) an upper surface opposing said lower surface, b) a polygonal shaped cavity of uniform lateral cross-section along its axial length extending downward from the upper surface toward the lower surface of said plate for receiving in mated engagement a non-circular portion of a bolt selected from the group consisting of a bolt head and a nut, c) a circular bore extending upward from said lower surface to penetrate a portion of said central cavity, being co-axially disposed thereto such that the non-circular portion of a bolt is retained in said cavity with the shaft of the bolt extending through said circular bore, d) a peripheral region disposed between the edge of the fastener and the central bore wherein said peripheral region of the fastener is thinner than the portion of the fastener adjacent said cavity, e) two or more holes disposed in said peripheral region extending between the upper and lower surface to secure the fastener to an object in contact with the lower surface thereby preventing rotation about said circular bore f) wherein the fastener is thinner in regions circumscribing each of said holes than in the region adjacent said cavity, and each of said holes is separated from an adjacent hole by a rib.