hi charger, there are plastic nylon bushings that go on both sides of the tailgate so there is no metal on metal. the drivers side all round bushing is part# 55276077AC. the pass side with the notch is part #55276076AD . they also use plastic washers to space out and tighten up the tailgate side to side "slop". the thin washers are part # 55276589AA and are about .021 thick. the thicker washers are part # 55276590AA and are about .052 thick. they never last in trucks that see sandy/dirty conditions, but they do work. I stock them . ronnie