Patent ID: 8567626

Claim:
A fastening device for fastening a tube to a bearing structure, wherein the fastening device comprises: a fastening section of the tube, which fastening section has a flattened zone created by compression, the zone being provided with a fastening hole; and a fastening bolt accommodated in the fastening hole to connect the fastening section to the bearing structure, wherein the fastening hole has a hole perimeter shaped so that the hole perimeter defines a force application plane between a bolt head and the fastening section that is inclined at an angle α relative to a fastening plane in which the fastening section is connected to the bearing structure, wherein the hole perimeter has a hole embrasure that is formed by an annular collar extending in a direction of a fastening axis, and which defines a bearing surface for the bolt head disposed in the force application plane, wherein the bearing surface is formed by a foldable rim created by a bracing foot of the annular collar on the hole perimeter, wherein the foldable rim has a rim elevation that projects above an adjacent hole perimeter area, and wherein hole perimeter of the fastening section has an S-bend shape in a cross-section extending through the fastening hole.