Description: Heavy-duty structural retaining nut/washer system engineered to lock the double-flanged blade pulleys onto the main drive and idler shafts. Features: Thread-Locking Geometry: Machined with specialized anti-loosening thread configurations that prevent the retainer from backing off under intense operational vibrations. Hardened Steel Construction: Forged from high-tensile heat-treated steel to ensure the drive threads never strip out when torqueing the pulley…