Abstract: A slidable door is fastened in a stationary relationship with respect to its door frame by a mounting plate rigidly attached to the frame, elongated socket connector pivotally mounted at one of its ends to the mounting plate and extending toward the door handle, and a locking element comprising a door handle engagement portion connected to the door handle and a tongue projecting therefrom and extending into the opening of the socket connector. The tongue and socket connector have interengaging lock elements that are biased into engagement with each other by a set screw and/or spring means.