Abstract: A composite molded plastic article includes a metal nut insert adapted to be molded in place within the body of plastic material. The nut insert is adapted to be mounted on a pin projecting into a mold cavity of the mold used in forming the article. The nut insert includes a central bore extending between a pair of parallel, planar faces of polygonal outline and defining along the edges thereof a first pair of substantially planar, opposite side edges which angularly intersect a second pair of opposite side edges having a longitudinally extending groove therein and/or a parallel rib between the parallel, planar faces of the nut insert.