Wiper arm nut. A solid metal or plastic block with a threaded hole in the center which is used to tighten or adjust the Decklid Hinge. A solid metal or plastic block with a threaded hole in the center which is used to tighten or adjust the Decklid Latch. A solid metal or plastic block with a threaded hole in the center which is used to tighten or adjust the Grille Molding. A/C Compressor Nut. ABS Control Module Nut. Alternator Nut. Back Glass Wiper Arm Nut. Battery Tray Nut. Bumper Impact Bar Nut. Hood Hinge Nut. Horn Nut. Liftgate Latch Nut. Windshield Wiper Arm Nut.