Plastic screw grommet

Details Plastic screw grommet Plastic screw grommet

1976-04-05

1978-03-07

Frazier, Roy D.

F16B 1304

Patent

active

040773000

ABSTRACT:
This invention provides a plastic screw grommet which comprises in combination a flange head, a leg having a polygonal (tetragonal) section and perpendicularly extending downwardly from the underside of the said flange head, depressions formed centrally on the sides of the said leg in the surface layer thereof, rigid engaging projections are joined throughout their length and formed to rise from the bottoms of the said depressions, a screw aperture extends inwardly from the topside of the flange head along the axis of the leg and grooves extend radially from the inner wall of the said screw aperture to a point adjacent the corners of said leg.

REFERENCES:
patent: 2927497 (1960-03-01), Rapata
patent: 3593612 (1971-07-01), Schulze
patent: 3701373 (1972-10-01), Wronke et al.
patent: 3756116 (1973-09-01), Schuplin

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