John Deere ET16678 Concave Washer is a versatile concave washer designed to provide secure fastening and effective load distribution. It features an inside dimension of 16.18 mm (0.64 in) and an outside dimension of 34.92 mm (1 3/8 in) to ensure an optimal fit for various applications. Constructed with a thickness of 1.24 mm (0.05 in), this washer durability and stability for long-lasting performance. Made from high-quality general steel, it s reliable strength and endurance. The mechanical zinc coating enhances corrosion resistance, extending the washer's lifespan even in challenging environments. Model Number: ET16678