Internal Tooth Lock Washers Set 9 Sizes M2 To M12, 260 Pcs Black 65Mn Steel

Internal Tooth Lock Washer Set: 9 Sizes M2-M12, 260 Pcs
✔️ 260 pcs in 9 sizes from M2 to M12, 65Mn black steel

These internal tooth washers are starlock style fasteners that lock nuts and bolts in place. They’re commonly used in electronics, automotive, and machinery where vibration can loosen fittings.

✅ Material: 65Mn steel with black finish
✅ Package: 260 pcs in a single storage box
✅ Included sizes: M2, M3 (9mm), M4 (12mm), M5 (12mm), M6 (16mm), M8 (18mm), M10 (20mm), M12 (25mm)
✅ Type: Internal tooth starlock washers to resist loosening under vibration

💡 What is an internal tooth lock washer used for in mechanical assemblies?
It’s handy for securing fasteners and preventing loosening in moving parts.
- anti-rotation bite for threaded hardware
- evenly distributes load to minimize vibration loosening
- made from durable 65Mn steel with black finish
- available in sizes M2-M12 for common small fasteners