General description These flat washers are made of galvanized zinc alloy steel, known for its corrosion resistance and durability, making them suitable for both indoor and outdoor applications. They are designed to provide a secure hold and distribute weight effectively, ensuring a reliable grip for various projects. Technical specifications Material: Galvanized zinc alloy steel Size: M20 (20 mm x 35 mm) Quantity: Pack of 10 Usage Ideal for sealing screws and as sealing rings Suitable for use in wood and wet environments