A outer conductor terminal includes a plurality of elastic contact portions elastically deformable in a radial direction orthogonal to a front-rear direction, and a plurality of slits located between the plurality of elastic contact portions in a circumferential direction of the outer conductor terminal. Each of the elastic contact portions includes a contact point portion protruding outward in the radial direction. The slits extend in the front-rear direction and are open at the front end of the outer conductor terminal. The outer conductor terminal includes, between the slits, stop portions that abut against the outer peripheral surface of a dielectric while the contact point portions are in contact with a counterpart outer conductor terminal.