Genuine OEM Volkswagen hexagon head bolt, part number N90786504. This is a standard bolt with a hexagonal head, used for general fastening applications. It is part of the exhaust system assembly, specifically item 7 in the diagram. The bolt has a length of 0.025 m and a weight of 0.023 kg. Genuine OEM bolts provide the correct tensile strength and thread pitch for reliable exhaust component mounting.