Retainer piece fixed to at least one wall

摘要

The second part, as well as the first retainer part (7) is sleeve-shaped. The second part fixes the retainer part in a hole (6) in a second wall part (2) spaced apart from the first wall part (1). The second end section of the retainer part has a radially wider part (7''') near the inside of the second wall part. Near the first wall part, the retainer is hollow cylindrical and has an inner thread next to the retainer part.