The LOCK WASHER INTERNAL ZINC 1/2" INTERNAL TOOTHED (SKU: ILW50) is designed for optimal grip and stability in fastening applications. Made from high-quality spring steel, this hardened washer features inward-extending teeth that securely lock into place when used under a screw head, ensuring a tight fit. Its zinc finish provides corrosion resistance, making it suitable for both indoor and outdoor environments. This washer is an excellent choice for applications where aesthetics matter and a clean, finished look is essential.