Interchangeable core cabinet and drawer deadlatch locks can be rekeyed without removing the whole lock to save time and costs. A control key removes and replaces the interchangeable core (IC) while keeping the lock body in place. Interchangeable core locks take LFIC or SFIC standard cores and are compatible across brands. The deadlatch automatically locks as soon as the drawer or cabinet door is closed, so users don't need to remember to manually lock it. These locks secure cabinets and drawers to prevent theft and unauthorized use of the contents.