Connection device has double thread tension nut screwed on outer threads with different pitches on two parts, to permit use of longer nut

摘要

The device has a tension nut (4) to connect two parts. The nut is screwed on an outer thread (5) on the first part (2) and to an outer thread (6) of the second part (3). The outer threads have different corresponding thread pitches. The nut is screwed on the thread with the smaller pitch past the final position tensioning the two parts, by a set distance (A). This distance is chosen so that in end position of the nut, a sufficient number of threads is formed between the nut and the thread with the larger pitch.