Abstract: A self-locking clip for mounting control lines such as wires, cables and the like on a flange, is formed of a single piece spring metal or of a resilient plastic material. The clip has an open-ended support channel that slightly overlaps the flange with a support and a holding section with upper and lower arms. The upper support arms hold the channel on the flange with a tab which extends over the corner defined between the plate and the flange. A biasing arm extends from the closed end of the support channel to contact the plate and cant the flange within the channel. A void area between the biasing arm and the plate beneath the flange is used to retain the control lines against the plate.