Genuine OEM Volkswagen Oval Hexagon Bolt, part number N10413401. This bolt features an oval head and a hexagonal socket drive, used for securing components within the fuel system. It is located at position 38 in the diagram, associated with the fuel rail assembly. The bolt has a length of 0.03 meters and a width and height of 0.012 meters. Genuine OEM bolts provide the correct material strength and thread engagement for secure and leak-free fuel system connections.