The adapter (1) has a base body i.e. flat plate, including a surface area at a rear side, and bolt (30) normally aligned to a layer of the surface area, where centerline of the bolt is deviated form normal to three angular degrees. The bolt includes a supporting area and/or the base body of a supporting structure (15). An adhesive layer is formed on a rear side of the base body that includes a recess. The adhesive layer comprises a contact adhesive that is covered by a supporting foil. Diameter of cylinder barrel is lesser than six-fold of bolt diameter in a holding area.
