The CASTLE NUT ZINC 1/2"-20 is engineered for reliability and strength, featuring a corrosion-resistant zinc plating that enhances longevity in demanding environments. With a thread size of 1/2"-20, this castle nut is ideal for securing components in various automotive and industrial applications. Its design allows for easy installation with a cotter pin, ensuring a stable connection even under vibration and load. Trust this high-quality nut to maintain performance and safety in your projects.