Genuine OEM Volkswagen Round Screw Hexagon Int., part number 3D0877721. This screw is a specialized fastener used within the sunroof assembly to securely attach various components, such as trim pieces or mechanical parts. Manufactured from durable metal, it provides reliable and long-lasting fastening. The precise dimensions and thread pitch ensure it integrates seamlessly with other parts of the sunroof mechanism. Genuine OEM screws guarantee the correct strength and fit, crucial for the smooth and safe operation of the sunroof.