1" thru hole Teflon washers are used during rudder installations. Use these between any item that makes metal to metal contact. Used between the safety collars and the top rudder brace to control up and down movement in your rudder.
This heavy duty quadrant has a clamp type boss for simple installation. The bolt locks the quadrant to the shaft. Quadrant has a 5” radius and a 1/4” keyway for added safety.