The invention relates to a backshell coupling for connecting an electrical cable to an electrical component, the coupling comprising a first part having a cylindrical sleeve suitable for passing the cable, the sleeve having an end provided with a first pair of arms; and a second part having guide means for said cable and a second pair of arms, the free ends of the first arms facing the ends of the second arms, with one of the pairs of ends being disposed between the other pair of ends; means defining a pivot axis between the pairs of arms, the facing faces of said ends being provided with portions in relief for defining a plurality of relative angular positions between the two parts, the arms having their ends disposed between the ends of the other arms being elastically deformable; and means for temporarily deforming the arms.