- Contains a built in washer that is serrated to resist loosening
- Galvanised steel for additional protection against outside elements, limiting corrosion
- Convenient pack of 10
These Zenith serrated flange nuts have a wide flange at one end that acts as an integrated, non-spinning washer. This serves to distribute the pressure of the nut over the part being secured and making it less likely to loosen as a result of an uneven fastening surface.