Composite molded plastic article

A composite molded plastic article with a metal nut insert molded in place, comprising:

• a body of molded plastic material, adapted to be formed in a mold having a pin projecting into a mold cavity used for making said article;
• and
• a nut insert having a central threaded bore adapted to be mounted on said pin within said cavity while said body is molded around surfaces thereof,
• said bore extending between a pair of opposite, parallel planar faces having a polygonal outline and including a first pair of opposite side edges normal to said planar faces comprising substantially planar surfaces, and a second pair of opposite side edges normal to said faces and angularly intersecting said first pair of edges said second side edges having a longitudinally extending, groove receiving said molded plastic material and positioned between planar faces,
• recess means in said body aligned axially of said threaded bore of said nut insert adjacent a planar face thereof spaced inwardly of an outer surface of said body for accommodating an overdriven threaded element engaged in said bore of said nut insert,
• said recess means comprising a nut holding insert molded in place in said body and having means for engaging and holding said nut insert in place in said mold cavity,
• said nut holding insert comprising a cup shaped member made of plastic material and said holding means thereof including wall portions engaging said opposite side edges of said nut insert, said cup shaped member further including an end wall and a stop wall spaced parallel thereof and adjacent said wall portions for engaging said adjacent planar face of said nut insert,
• said cup shaped member having a circular transverse cross-section with an inner diameter greater than that of said threaded bore of said nut insert, said end wall of said cup shaped member being spaced inwardly of an adjacent outside surface of said body of said article, and
• said end wall of said cup shaped member including a central spacer having an outer surface aligned with said outside surface of said body of said article.