Genuine OEM Volkswagen Double Hexagon Screw, part number WHT010011. This screw is specifically designed to fasten components within the brake system, ensuring secure and reliable assembly. It is identified as part 17 in the diagram, which details brake caliper components. The screw has a length of 0.04m and weighs 0.0164kg. Using genuine OEM screws is critical for brake system safety, as they are manufactured to exact specifications for proper clamping force and resistance to vibration.