Product Details: The Euclid Steer Axle Spindle Lock Washer is designed to provide a secure fit and prevent unwanted movement or play between components. This lock washer creates mechanical interference between the nut and the spindle, resisting rotational forces and preventing the nut from loosening over time. It helps to maintain the correct torque on the axle assembly, ensuring a safer and more stable ride for the vehicle. FleetPride is your First Click in Heavy Duty®.