Square Washer: Case Hardened, Black Oxide, Steel, 1/2 in Screw Sz, 0.562 in In Dia, 2 in Washer Lg

Square and rectangular flat washers have larger surface areas than round washers for better torque distribution. They are thick and broad to protect against the damage of wood fibers used in wood construction. With flat sides, these washers can be used in tight areas where round washers would not fit. They limit sound levels, vibration, and electrical current in seismic applications.