John Deere 12H303 Lock Washer, 5-Pack is a high-quality lock washer designed to prevent loosening of fasteners in various applications. This washer features an outer diameter of 14.81 mm (0.58 in) and a nominal size of 7.94 mm (5/16 in), ensuring a secure fit and reliable performance. Constructed with a thickness of 1.98 mm (0.08 in), it provides durability and stability under pressure. Made from high-quality general steel, it enhanced strength and longevity. Additionally, it is coated with a zinc finish to resist corrosion and extend the lifespan of the washer. Model Number: 12H303