Assembly for producing a threaded connection, method for making up and breaking out said connection and use of said connection in a work over riser

An assembly for producing a threaded connection, comprising:

• a first and a second tubular component with a same axis of revolution, each respectively including at one of its ends a male threaded zone produced on its external circumferential surface, said ends each respectively finishing in a terminal surface comprising means together forming a direct drive dog clutch device so as to fix the first and second tubular components in rotation;
• and
• a third tubular component which also has an axis of revolution and includes at each of its ends on its internal circumferential surface with a female threaded zone,
• one of the two male threaded zones being capable of co-operating by screwing with one of the two female threaded zones while the other male threaded zone can co-operate by screwing with the other female threaded zone,
• wherein the male end of the first tubular component and the corresponding female end of the third tubular component comprise means for free rotation such that at the end of makeup of said male threaded zone into said female threaded zone, the tubular components carrying said male and female threaded zones are freely rotational with respect to each other.