Door check nut. Left. Right. A Nut used to secure the rack and pinion heat shield to its mounting point. A solid metal or plastic block with a threaded hole in the center which is used to secure the Window Regulator Guide Rail to it's mounting point. A solid metal or plastic block with a threaded hole in the center which is used to tighten or adjust the Tire Pressure Monitor Control Module. Back Glass Wiper Arm Nut. Bumper Impact Bar Nut. Door Check Nut. Exterior Door Handle Nut. Hood Latch Nut. Horn Nut. Tail Light Nut. Window Regulator Nut.