A support washer is also commonly known as a backing plate or a load spreader. These devices are used to provide additional support and stability to bolts, screws, and other fasteners. Other synonyms for support washer include flange washer, reinforcement washer, and shim washer. Flange washers are used to distribute load and prevent damage to surfaces, while reinforcement washers are designed to improve the strength of fastened joints. Shim washers are used to adjust or level out surfaces during assembly. Regardless of the specific application, support washers are essential components in ensuring safe and reliable fastening of equipment and structures.