External Tooth Lock Washer 1/4 in, Zinc Plated, 100 Pack
✔️ Zinc-plated external tooth lock washer with serrated outer edge for strong grip

These washers bite into the surface with outer serrations to resist loosening from vibration, while keeping a clean, hidden-teeth appearance for a neat finish. They're widely used in DIY projects and pro hardware setups where a stable lock is essential.

✅ Outer diameter serrations bite into the surface for greater holding power.
✅ Zinc plating provides moderate corrosion resistance for everyday use.
✅ Designed for large head screws such as round, pan, binding, or washer head.
✅ Hidden teeth design preserves a clean finished appearance after installation.
✅ Pack size: 100 pieces; 1/4 inch size standard for DIY and pro work.

💡 What is an external tooth lock washer used for in handy DIY hardware projects?

It's a handy fastener accessory that helps keep fasteners tight under vibration.

- handy for vibration-prone assemblies that need a secure lock - helps maintain bolt tension with serrated outer teeth - pairs well with large-head screws for a clean finish - zinc plated for basic corrosion resistance in typical environments