[$20071k10]

There should be a washer with a bunch Of holes all the way around it And keyed In between the two spindle nuts. The first spindle nut should have a nipple all on it the nipple engages the holes in the washer the key way keeps the nut and washer from spinning and the second nut james it all together if you are torquing the out side jam nut right it should never come loose!!!