Horn screw. A threaded rod with a drive head (such as hex, 12 point, torx, etc.) on one end used to secure the Power Steering System Oil Cooler to it's mounting point. Bolt that secures the Hood Latch. Bolt used to mount the radiator shutter assembly to the vehicle. Hood Latch Screw. Horn Mount Bolt. and Washer ASSEMBLY. Hood Latch. Horn Mount. Lock. Power Steering Cooler mount. Radiator Shutter Assembly.