Threaded connection for exploration and production of a hydrocarbon well

A threaded connection for exploration and production of a hydrocarbon well, said threaded connection comprising:

• a pin comprising an outer pin surface provided with an external thread,
• a box comprising an inner box surface provided with an internal thread for mating with the external thread during rotational make-up of the threaded connection, and
• an anti-rotation device to allow relative rotation between the pin and the box in a make-up rotation direction and prevent relative rotation between the pin and the box in an opposite break-out rotation direction, wherein:
• the pin and the box extend along a longitudinal axis,
• the anti-rotation device comprises a releasably mounted first anti-rotation member which is arranged in a first radial recess provided in one of the outer pin surface of the pin and the inner box surface of the box, and a second anti-rotation member provided at the other of the outer pin surface of the pin and the inner box surface of the box,
• the first anti-rotation member comprises a first ratchet part provided with radially extending first ratchet teeth,
• the second anti-rotation member comprises a second ratchet part provided with radially extending second ratchet teeth which engage the first ratchet teeth of the first anti-rotation member at final make-up of the threaded connection,
• the first anti-rotation member comprises a spring part which allows radial movement of the first ratchet part in radial direction relative to the longitudinal axis when first ratchet teeth slide along second ratchet teeth during relative rotation between the pin and the box in the make-up rotation direction,
• the first anti-rotation member is arranged in the first radial recess being provided in the outer pin surface of the pin, and the second anti-rotation member is provided at the inner box surface of the box,
• the pin comprises a pin retainer part,
• the second anti-rotation member comprises a member retainer part,
• the pin retainer part and the member retainer part are configured to block movement of the second anti-rotation member in radial direction away from the longitudinal axis at final make-up of the threaded connection,
• the member retainer part is in radial direction located closer to the longitudinal axis than the pin retainer part, and
• the pin retainer part overlaps the member retainer part at least partly in axial direction relative to the longitudinal axis at final make-up of the threaded connection.