A Serrated Flange Lock Nut combines the benefits of a standard lock nut with a serrated flange that acts as an integrated washer. The serrations on the flange create additional friction against the mating surface, preventing the nut from rotating or loosening under stress or vibration.

The flange also spreads the load across a larger area, reducing the risk of damage to softer materials and enhancing the stability of the fastened parts.