Abstract: The invention relates to a fastening device having at least one positionable holding device, comprising a base plate having an extensively flat rear surface and a front surface, opposite the rear surface, wherein a first guide channel is formed on the front surface. The guide channel is delimited by side walls, wherein engagement areas are formed at least in sections on at least one of the side walls. According to the invention, a slide element is arranged in the guide channel, which can be displaced along the guide channel, wherein the slide element has a carrying element, wherein two spring elements are formed on the slide element, which can engage with the engagement surfaces of the guide channel in a blocking position, and wherein there is a movable locking element on the slide element, which fastens the spring elements at least in the blocking position.

Abstract: The invention relates to a fastening device having at least one positionable holding device, comprising a base plate having an extensively flat rear surface and a front surface, opposite the rear surface, wherein a first guide channel is formed on the front surface. The guide channel is delimited by side walls, wherein engagement areas are formed at least in sections on at least one of the side walls. According to the invention, a slide element is arranged in the guide channel, which can be displaced along the guide channel, wherein the slide element has a carrying element, wherein two spring elements are formed on the slide element, which can engage with the engagement surfaces of the guide channel in a blocking position, and wherein there is a movable locking element on the slide element, which fastens the spring elements at least in the blocking position.

Abstract: The invention relates to a holding device for adhesive fastening to a surface, comprising a holding element and an allocated fastening element, wherein the holding element has a base plate having a rear surface and a threaded bolt protruding over the base plate, wherein the fastening element can be attached to the threaded bolt of the holding element, wherein the fastening element has a continual opening and is elastic at least in the region of the opening, and wherein the opening has an inner diameter which, in relation to an outer diameter of the threaded bolt, is designed such that the fastening element can be both placed on and removed from and, by a rotating motion, screwed onto or off of the threaded bolt.

Abstract: The invention relates to a retaining body for fastening on a surface, wherein the retaining body can be fixed on the surface by means of a double-sided adhesive strip with two opposite retaining surfaces, wherein the retaining body has a basic body with a flat rear surface and a front surface, which is located opposite the rear surface, wherein the front surface of the basic body has formed on it a carrying element which projects from a plane of the basic body, wherein the basic body has, on the front surface, a reinforcing structure with reinforcing elements, wherein the reinforcing elements subdivide the front surface of the basic body into at least two differently sized pressure-exerting surfaces.