Check the listing for details. 4 Pcs M12 Beveled Square Washers Thickness 2 to 6.1mm Wedge Washers Silver. Condition: New. Listed at 13.02 USD. Our beveled square washers are widely used in various industries, such as construction. They are often used in mechanical equipment and wood structures. For example, they are used with carriage bolts to secure roof trusses. The flat design creates additional friction when tightening wood, allowing them to effectively secure bolts, screws and other fasteners. They are also used to embed in grooves and channels, and their flat sides prevent them from rotating.SpecificationColor: SilverMaterial: 304 Stainless SteelScrew/Bolt Thread Diameter: M12Inner Diameter: 13.5 mm / 0.53 inchThickness: 2 to 6.1 mm / 0.08 to 0.24 inchDimension: 28 x 28 mm / 1.1 x 1.1 inches (L*W)Package List: 4 Pcs x Beveled Square WashersAdvantage:1.