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MASTER FINISH a saw screw, also known as a sawtooth screw or a sawtooth hanger, is a small hardware component used for hanging picture frames, mirrors, and other wall-mounted items. It consists of a metal plate with a series of jagged or saw-like teeth along one edge. These teeth are designed to grip into the back of a wooden frame or object, providing a secure and stable attachment point to hang the item on a wall. The saw screw is typically attached to the back of the object using screws or nails. The sawtooth teeth grip into the wood, preventing the object from easily slipping or falling off the wall. This design allows for easy adjustment of the object's position on the wall, as it can be lifted off and repositioned without the need to remove the hardware entirely. Saw screws are popular due to their simplicity and effectiveness. They are commonly used for lightweight to moderately heavy objects that are meant to be displayed on walls. Additionally, they provide a neat and inconspicuous hanging solution, as the hardware remains hidden behind the object being hung.