A linking part for an aircraft is disclosed having an elongated section including an internal longitudinal seat and a tenon mounted in the seat. The tenon includes a linking element at a free longitudinal end thereof and configured in a retracted position in which the tenon is fully inserted in the seat and does not create an obstruction, enabling the linking part to be easily moved towards the support element, or a deployed position (P2) in which the free longitudinal end of the tenon is outside the seat and is able to be linked using the linking element to the support element, thereby enabling a link to be made simply and quickly.