A fastening resin structure includes a preformed resin member, a fastener-receiving part of metal configured to be fastened to another structure, the fastener-receiving part having a portion joined to the preformed resin member, a foam portion provided on and formed integrally with the portion of the fastener-receiving part which is joined to the preformed resin member, and a joining resin interposed between the preformed resin member and the foam portion and impregnated with the foam portion to thereby join the preformed resin member and the fastener-receiving part via the resin-impregnated foam portion.

Disclosed is a plug connector housing, which is formed from an at least partially open-pore, electrically conductive housing body, through at least part of which a non-conductive plastic material passes, and a plug connector that uses such a plug connector housing. Also disclosed is a method for producing a plug connector, wherein an open-pore, metal housing body is produced in a casting method or a sintering process, wherein the housing body is inserted in an injection molding tool, wherein in the injection molding process the outside of the housing body is encased with a plastic material at least in some regions, wherein plastic material also enters the open pores and the interior of the housing body.