Abstract: A rail clip for securing a strip heater to a rail that resists removal when subjected to intense vibration, such as when rail cars are passing overhead. The rail clip is configured with a U-shaped rail flange receiving area wherein the opposite sides of this receiving area are configured with at least one tooth each for securing the rail therebetween. For greater securement, multiple teeth on each side of this U-shaped receiving area would be employed and with at least one tooth on each side thereof being in alignment with the other. Furthermore, the teeth on at least one side of this receiving area would include multiple teeth, both pointed and elongated.