Assembly for fixing an injector into a holder

The assembly has a nozzle clamping nut (20) that is screwed onto the leading half of the nozzle body, a clamping sleeve (26) that interacts with the nozzle clamping nut and a clamp element (29) that acts on the clamping sleeve and holds the injection nozzle in a mounting opening (14) by means of the nozzle clamping nut. The clamping sleeve can be made in one piece with the clamping nut.