PLASTIC OVERMOLDED SCREW
A two-piece fastener, for example a bumper screw, includes a fastener and an overmolded resilient portion configured to avoid contact with a fastening tool.
1 . A method for molding plastic bumper on a screw body having an enlarged screw head periphery comprises
providing recesses in the screw head periphery intermediate tool engaging points of a fastener insert, and
insert molding plastic material adjacent a top surface, the recesses and a bottom of the screw head.
2 . The invention as described in claim 1 wherein said enlarged head includes chamfers and wherein said insert molding includes overmolding said chamfers.
3 . The invention as described in claim 2 and further comprising limiting exposure of said head through said plastic material.
4 . The invention as described in claim 3 wherein said limiting is adjacent working surfaces of said head.
5 . The invention as described in claim 4 wherein said working surfaces are corners of said head.
6 . A bumper screw comprising
a screw body with a head having a peripheral wall with a plurality of tool engaging surfaces,
a notch formed intermediate adjacent tool engaging surfaces, and
a resilient material molded over the top, in the notch and under the head, and at least one surface portion of said tool engaging surfaces exposed through said resilient material.
7 . The invention as described in claim 5 wherein said tool engaging surface is surrounded by said resilient material.
8 . The invention as described in claim 5 wherein said tool engaging surfaces are corners.