Abstract: An injection molded fastener is provided for securing a preform to a foam substrate. The fastener includes a body having first and second ends with a head secured to the first end. A pilot section extends from the second end of the body, and includes a pointed end for penetrating and forming a hole in the preform and substrate. A plurality of angled barbs extend from the body for preventing removal of the fastener from the formed hole. The fastener is of sufficient strength to withstand a hammer blow and to penetrate the substrate when hammered. In a preferred embodiment, the fastener comprises a mineral filled nylon material.