This specific nut serves as a crucial fastening component for the drive shaft of classic Citroën models like the 11CV, 15CV, and HY up to September 1963, as well as the DS. It is designed to provide secure fitting and durability, which makes it ideal for vintage vehicle restoration or maintenance. Primarily used by car enthusiasts and restorers, this part is essential for the proper functioning of the drivetrain. The zinc coating provides additional protection against corrosion, enhancing the component's longevity. It retains authenticity to original factory standards, ensuring a perfect historical fit for these iconic vehicles.