SKID PLATE. A Nut which secures the trailer hitch receiver to the vehicle. A solid metal or plastic block with a threaded hole in the center which is used to tighten or adjust the Skid Plate. Bumper Face Bar Nut. Bumper Face Bar Reinforcement Beam Nut. Radiator Support Splash Shield Nut. Face Bar Reinforcement Beam. Hex. Inner bracket U -. Mount bracket. Powertrain Skid Plate. Radiator Support Splash Shield. Step. Trailer Hitch. Under cover retainer.