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High-quality lock washer designed to prevent loosening of fasteners due to vibration or torque. Features an outer diameter of 12.37 mm (1/2 in) and a nominal size of 6.35 mm (1/4 in) for versatile applications. Thickness of 1.57 mm (0.06 in) ensures durability and reliable performance. Made from high-quality general steel for strength and longevity. Coated with a zinc finish to resist corrosion and enhance durability.