Our Thrust washers are flat steel washers that are located between the Caster Wheels outer hub of each side of the wheel. Thrust washers hold the roller bearing inside the bore of the wheel. Thrust Washers also support the axial-load or side-to-side motion on a shaft and prevent movement along that shaft. The thrust washer provides a surface on which a roller bearing is typically supported in the Caster industry. Have more questions about our Thrust Washers? Give us a call at 1-844-439-4335 Monday thru Friday between 8 am-5 pm (CST) or email us at [email protected]