Abstract: A combination wedge-lock type circuit card retainer and guide slot for use in an electronic chassis. The combination including an elongated base member having a circuit card guide wall formed along one side. One end of the base member has a fixed wedge formed thereon spaced from and facing the guide wall. A support aligned with the fixed wedge is formed adjacent the other end of the base member and it also is spaced from the guide wall. The combination retainer also includes a shaft having a head end and a thread end. The shaft extends through the fixed wedge with its thread end engaged in the support. An end wedge is threaded onto the shaft adjacent the thread end with a center wedge mounted on the shaft between the fixed and end wedges. The center wedge is provided with a spring that is grounded on the base member for biasing the center wedge into engagement and alignment with the fixed and the end wedges. The aligned wedges together with the guide wall forming a circuit card channel or slot.