[Mr. 16 gauge]

How crucial is it to have a washer between the outermost bearing and the nut that holds the works onto the axle? I have one trailer that came with the washers, and the other didn't......I have searched high and low for a two damn washers to fit, and have come up empty. When I put the nut on without the washers, and tighten it down and put the cotter pin in place, there is no play in the hub. Good to go, or should I wait until I can possibly find some washer to fit? Thanks in advance.