Genuine OEM Hyundai Rear Brake Disc Screw, part number 1220306167B. This specialized screw is designed to securely fasten the brake disc to the wheel hub assembly, specifically for the rear brakes. It plays a critical role in maintaining the correct position and stability of the brake disc. Measuring approximately 18mm in length, this screw is engineered to factory specifications. Using genuine OEM fasteners ensures the correct thread pitch, material strength, and corrosion resistance, which are vital for the safety and longevity of the braking system.