Abstract: A cord connection system includes a male plug on an electrical cord having conventional blades projecting therefrom. A female receptacle has conventional blade terminals for connection with the plug, and includes a locking ring rotatably mounted on a receptacle body, the ring being interiorly threaded to engage exterior threads on the body of the male plug. A flange on the forward end of the receptacle retains the ring on the receptacle so that the plug and receptacle are locked together when the locking ring is engaged on the plug thread. A receptacle end piece is provided which maintains the locking ring in position on the end of an electrical cord, in one embodiment of the invention. In a second embodiment of the invention the receptacle end piece is mounted on the rearward surface of a wall plate such that the receptacle projects through the wall plate with the locking ring and blade terminals projecting forwardly of the wall plate.