Trim cover clip

Claim 1

A trim cover clip of a plastic formed in a mold comprising a hollow tube, containing in the wall of said hollow tube at least one slit having the shape of three sides of a rectangle and thereby enclosing therein an engaging piece possessing an attached end and a free end, and having the inner wall of said engaging piece corrugated to form teeth at least some of which are axially spaced from said free end toward adjacency with the attached end, said teeth being capable of engaging with a thread on a bolt being passed through the inner hole of said hollow tube from adjacent the attached end to the free end thereof, said teeth on the inner wall of said engaging piece being helically formed at the same pitch as said thread on said bolt, said engaging piece being formed inwardly aslant relative to the outer wall of said hollow tube so as to have the free end thereof positioned deeply into the inner hole of said tube and substantially completely inwardly of said outer wall for bolt engagement substantially throughout the extent of said engaging piece; and a forming tool accommodating aperture means in the wall of said tube diametrically opposite said engaging piece and at least coextensive with the toothed face of the engaging piece for enabling removal of a part of a tool for forming said engaging piece during molding.