Square washers are flat, square-shaped pieces of material, typically made from metal or plastic, that are used in various applications to distribute the load of a threaded fastener, such as a bolt or screw. Their design allows for a larger surface area compared to round washers, which can enhance stability and prevent damage to the surface being fastened. Square washers are particularly beneficial in situations where the fastener is subjected to lateral forces, as they provide better resistance against loosening. They are commonly utilized in construction, machinery, and automotive industries, where securing components is critical for safety and performance. The choice of material and size for square washers is essential, as it directly impacts their effectiveness and durability in specific applications.