UNC Die Nuts are designed for cleaning, repairing and restoring Unified National Coarse (UNC) external threads on bolts, studs and threaded rods. Commonly used for thread maintenance and rethreading, die nuts help restore damaged or worn threads rather than cutting new ones. Manufactured from high-quality HSS for durability and long service life, UNC die nuts are suitable for engineering, automotive, manufacturing, maintenance and general workshop applications. Available in a wide range of UNC thread sizes, they provide accurate thread restoration and reliable performance for professional trades and industrial use.