Tilt-adjustable connecting device for forming a tension-proof and bend-resistant connection between a substrate and an object to be fastened thereto, wherein - the connecting device has an upper part and a lower part, - wherein the upper part is made to abut with and be rigidly connected with one side of the object to be fastened, wherein the opposite side of the connecting device is oriented towards the lower part, - wherein the lower part is made to abut with the side facing away from the upper part on the substrate and to be rigidly connected thereto, - wherein between the upper and lower part are a plurality of connecting components (11, 12), which abut both the upper part and lower part and on a plane, which is parallel to that surface of the connecting device, which is intended for abutment against the substrate, are arranged at intervals adjacent to each other, - wherein one or more of the connecting components are pulling connecting components, which are arranged to be able to exert force on the upper part oriented towards the lower part and to be able to exert force on the lower part oriented towards the upper part, - wherein one or more of the connecting components are pushing connecting components, which are arranged to be able to exert force on the upper part oriented away from the lower part and to be able to exert force on the lower part oriented away from the upper part, - wherein perpendicular to that surface of the connecting device, which is provided for abutment against the substrate, horizontal spacing of the points of application of one or a plurality of connecting components (11, 12) on the lower part and on the upper part, can be adjusted by the adjustment of one respective threaded connection, which is part of the connecting device, wherein the threaded connection comprises a respective screw (13, 17) and a part (14, 18) in threaded engagement thereto, - wherein a plurality of the connecting components are movably guided on the lower part and/or on the upper part and are in contact with one respective part of a threaded connection, which has a threaded axis parallel to that surface of the connecting device which is intended for the abutment against the substrate, - wherein the part of the threaded connection which is in contact with the connecting component is slideable through adjustment of the threaded connection, and thus the connecting component is also slideable, - wherein the sliding movement of the connecting component has a directional component perpendicularly aligned with the surface intended for abutment against the substrate, characterised in that - the connecting component, which can be slid by adjusting the threaded connection, which, with regard to the surface intended for abutment against the substrate, is an obliquely aligned plate. - the connecting device has an upper part and a lower part, - wherein the upper part is made to abut with and be rigidly connected with one side of the object to be fastened, wherein the opposite side of the connecting device is oriented towards the lower part, - wherein the lower part is made to abut with the side facing away from the upper part on the substrate and to be rigidly connected thereto, - wherein between the upper and lower part are a plurality of connecting components (11, 12), which abut both the upper part and lower part and on a plane, which is parallel to that surface of the connecting device, which is intended for abutment against the substrate, are arranged at intervals adjacent to each other, - wherein one or more of the connecting components are pulling connecting components, which are arranged to be able to exert force on the upper part oriented towards the lower part and to be able to exert force on the lower part oriented towards the upper part, - wherein one or more of the connecting components are pushing connecting components, which are arranged to be able to exert force on the upper part oriented away from the lower part and to be able to exert force on the lower part oriented away from the upper part, - wherein perpendicular to that surface of the connecting device, which is provided for abutment against the substrate, horizontal spacing of the points of application of one or a plurality of connecting components (11, 12) on the lower part and on the upper part, can be adjusted by the adjustment of one respective threaded connection, which is part of the connecting device, wherein the threaded connection comprises a respective screw (13, 17) and a part (14, 18) in threaded engagement thereto, - wherein a plurality of the connecting components are movably guided on the lower part and/or on the upper part and are in contact with one respective part of a threaded connection, which has a threaded axis parallel to that surface of the connecting device which is intended for the abutment against the substrate, - wherein the part of the threaded connection which is in contact with the connecting component is slideable through adjustment of the threaded connection, and thus the connecting component is also slideable, - wherein the sliding movement of the connecting component has a directional component perpendicularly aligned with the surface intended for abutment against the substrate, - the connecting component, which can be slid by adjusting the threaded connection, which, with regard to the surface intended for abutment against the substrate, is an obliquely aligned plate.