Abstract: A plastic composite fastener capable of cutting its own hole in a resin composite panel and friction welding itself to be flush with the outer surface of the resin panel is provided. An inner metal core member can be provided with at least one cutting edge member extending from the core member. An outer plastic sheath member having an annular flange is fastened to and extends about the inner metal core member. The cutting edge member is exterior of the plastic sheath member at one end of the fastener insert unit and is configured to cut a hole in the resin panel, while the annular flange is configured to friction weld to a resin panel surface.

Abstract: An improved clip nut has a long flat spring steel body which is bent back upon itself such that the two end portions of the spring steel body lie essentially parallel to each other with one portion forming the top arm and other portion forming the bottom arm. The top arm has a hole through its surface and a small flange projecting off of each of the respective sides. Each of the flanges has a slot near the edge where the flange joins the top arm. The nut portion of the clip nut comprises a nut member having tabs fitting into the slots. The threaded bore of the nut is in alignment with the hole in the upper arm. The bottom arm has two fingers integrally formed with and parallel with the side edges of the arm. The end of each finger is provided with a dog. A plastic sleeve is formed of a molded structure having a channel along each respective side edge of the plastic sleeve. A hole passes through an annular boss in the sleeve.