Early Steering Box Adjusting Stud Replacement Locknut

This is not a normal nut. On the face it has a special hard plastic nylon seal. When this seal deteriorates you may see evidence of power steering fluid seeping out of the bottom the the adjustment locknut (located on the top of the steering box). Kent recommends if you are planning to loosen your locknut to adjust the play in your steering box that you purchase this new nut ahead of time. Fluid leaks are not fun!