Three Eighths Inch Internal And External Tooth Lock Washers Pack Of 25 For Screws And Bolts Grip Strength To Fight Vibration Zinc Plated Steel Great For Automotive And Machinery Or DIY Projects At Home Or In The Shop

3/8 in Tooth Lock Washers, Internal & External, 25-Pack
✔️ 25-piece pack; fits 3/8 in bolts; zinc-plated steel for grip

These high-quality washers combine internal and external teeth to grip bolts and screws strongly, helping resist loosening from vibration. Common in automotive, machinery, and DIY projects at home or in the shop.

✅ Fits 3/8 inch diameter bolts and screws
✅ High-quality internal/external tooth lock washers provide extra bite and reduce vibration
✅ Zinc-plated steel resists corrosion for long life
✅ Pack of 25, made in USA

💡 What is a lock washer used for in mechanical assemblies?

- Handy for preventing fastener loosening in vibration-prone setups
- Works with internal and external tooth designs to grip tightly
- Common in automotive, machinery, and DIY projects
- Helps maintain preload and reduce maintenance over time