Abstract: A threaded ring has a single-component body provided with an internal screw thread (14, 16) and two body parts (10, 12). The first part (10) forms an adjusting ring having an end face (22) located on a radial plane. The second body part (12) forms a security ring connected to the first body part (10) by an elastically flexible wall part (32) of the body, forming a gap (26) between the two body parts. An actuating device can adjust the geometry of the gap (26) due to the elastic flexibility of the wall element (29) along the longitudinal axis of the body. A bearing surface (46) having a predefinable inclination is arranged in the premounting state between parts of the actuating device and parts of the body.