M4 Belleville Spring Washers 100 Pcs 65Mn Steel Conical Knurled Gasket

M4 Belleville Washer Set: 100P, 65Mn Steel, Zinc
✔️ M4 size, 4x10x0.7 mm / 0.16x0.39x0.03 in, 100 pcs

These Belleville spring disc washers deliver a conical locking action that helps keep fasteners secure in dynamic loads. They’re commonly used in automotive, industrial, and household assemblies where vibration can loosen bolts.

✅ 65Mn steel with white zinc plating for corrosion resistance and durability
✅ Conical Belleville design provides preload and lock under load
✅ Size: M4 (4x10x0.7 mm / 0.16x0.39x0.03 in); pack of 100
✅ Suitable for tightening screws, bolts, and nuts in various applications

💡 What is a Belleville spring washer used for?

They’re handy for keeping fasteners tight in vibration and dynamic load settings.

- Maintaining preload on bolts and nuts under vibration
- Preventing loosening in shocks and thermal cycling
- Ideal for automotive, industrial, and home equipment