Abstract: A locking device for a storage container such as a tool box in which a hinged lid includes a pair of spaced detents depending to a latching configuration at their distal ends. Cooperating with the detents is a tubular conduit slidably displaceable and including slots in an upper surface in which to receive and secure the distal ends of the detents. A padlock for unlocking the box is received within a recess of the tool box providing exterior exposure to only the key end of the lock. Opening the padlock causes the lock body to eject partially outward of the tool box while forming a gap between the latching end of the lock shackle and the lock body. Secured to the conduit in the plane of the gap is a manually displaceable wing which when the lock is opened can be displaced into the gap to in turn displace the conduit and enable release of the detents.