Abstract: A mounting assembly facilitates the installation of dowels in layered compound panels. A dowel is held in its installed position in a hole in the panel by anchoring elements including at least one flange and by casting a curable casting resin mass around the dowel. The upper facing surface of the dowel inserted in the hole in the panel and the lower surface of a mounting member for facilitating the installation of the dowel are both located in a plane in common with an outer layer of the panel. The mounting member extends outside the circumference of the dowel and is connected to the dowel body (2, 41) thereby forming a casting dish or ring (21, 59) around the dowel. The dowel body (2, 41) has a cornered portion (6, 45) located centrally around the axis of a threading in a threaded bushing, whereby the flange (5, 43) merges into the cornered portion and whereby the cornered portion has flattened corners (15) defining an outer circle having a diameter equal to or larger than the diameter of the flange.

Abstract: A built-in connector element is constructed for being anchored in sandwich ype compound panels. For this purpose the connector element has a central threading for cooperation with further connector components and a body with corners forming anchoring fins for holding the connector element in the compound panel. The cornered body is arranged substantially concentrically relative to said threading and has a rounded flange merging into the anchoring fins. The anchoring fins are so dimensioned that the circle enclosing the outer corners of the fins has a diameter which is equal or larger than the diameter of the flange. In one embodiment the central threading is provided directly in the cornered body. In the other embodiment a threaded member is laterally displaceable in the hollow cornered body, whereby the initial insertion of a screw is made easier.