High mount lamp nut. WAGON. A Nut that helps hold the parking lamp to its mounting surface. A solid metal or plastic block with a threaded hole in the center which is used to tighten or adjust the Grille Molding. Back Up Light Assembly Nut. Bumper Impact Absorber Nut. Bumper Trim Nut. Center High Mount Stop Light Nut. Fog Light Nut. Grille Emblem Nut. Nut to secure Bumper cover. Reflector Panel Nut.