Genuine OEM Audi Hexagon Flange Screw, part number 8J0199395D. This is a specialized fastener with a flange head, designed for use in the vehicle's subframe assembly. The flange provides a larger contact area, distributing load more effectively. Its function is to securely fasten components within the subframe structure. Genuine OEM screws are manufactured with precise tolerances and material specifications to guarantee reliable and safe assembly.