This threaded fastening nut is specially designed for compatible drywall sander models, used to directly replace part number N862773. Manufactured from high-strength metal alloy, it features excellent hardness and wear resistance, ensuring stable and reliable fastening for key components of the sander. The standard thread structure is precisely processed to match original equipment specifications, enabling firm installation without slipping or loosening during high-speed operation. It can be quickly installed with a common wrench, effectively restoring the fixing function of the sanding tool and ensuring stable performance for daily sanding work.