Fastening clamp for brake cylinder

The clamp has a tapered neck section to which a hook shaped section (22) is attached and a cable retainer, where the clamp is made of plastic. The neck section is fit between an end and a wall of a casing of a brake cylinder so that the hook shaped section fixes the clamp on the cylinder. A wedge-shaped gap is formed between a resilient projection and the neck section so that an opposite wall of neck section presses against the end.