Abstract: The present invention relates to an apparatus and method for securing a box cover to a watt-hour meter socket box. In certain embodiments, the apparatus has a clamping member that fits over a wall of a meter box, and a lock housing that locks to the clamping member after a box cover has been installed, thereby securing the cover to the box in a manner such that the box cover cannot be installed unless the clamping member has been installed correctly. In various other embodiments, the clamping member includes a clamp disposed between a clamp actuating member and a fastening shelf. In various other embodiments, the clamp includes a stopping member for indicating when the clamp actuating member is actuated into a fully secured position.