Square washers are a type of washer typically used in construction and woodworking applications. Unlike traditional round washers, square washers have flat sides, which provide a larger surface area for distributing the load. This design helps to prevent materials from being damaged or slipping under pressure, making them ideal for use with square or rectangular bolts. Square washers are often made of durable materials like steel or stainless steel to ensure longevity and strength. They are commonly used in structural applications where stability and support are crucial.