The LOCK WASHER EXTERNAL ZINC #10 EXTERNAL TOOTHED is crafted from high-quality spring steel, featuring twisted prongs that extend from the outer edge. This design provides superior locking efficiency by maximizing surface engagement, making it the most common choice for securing bolts and screws in automotive and industrial applications. Its zinc finish offers added corrosion resistance, ensuring longevity in various environments. Ideal for high-vibration applications where reliability is crucial.