The LOCK NUT NYLON UNC ZINC 5/8"-11 GR 2 features a hex design with a nylon-filled collar that provides enhanced locking capability to prevent loosening due to vibration. Manufactured from Grade 2 zinc-plated steel, this nut is suitable for a range of industrial and automotive applications where reliable fastening is critical. Its 5/8"-11 UNC threading ensures compatibility with standard screws, making it an essential component for your assembly needs. Perfect for use in machinery, equipment, and structural applications.