An electric connector to which a cable is connected, comprising: a housing configured to hold multiple terminals; a conductive shell provided outside the housing to cover at least part of the housing; an insulating first cover provided outside the shell to cover at least part of the shell; and a turnable insulating second cover, wherein the shell has, on the cable side, a first contact piece and a second contact piece for sandwiching an external conductor of the cable from both sides to contact the external conductor, and wherein the second contact piece is positioned on a second cover side, and is deformable in a center axis direction of the cable to contact an inner wall surface of the second cover, characterized in that the turnable insulating second cover is coupled to the first cover through a rotary shaft, on a cable side, each of the first cover and the second cover has, on an inner wall surface thereof, a protrusion (42, 62) for biting an external insulator of the cable to fix the cable, the first cover has a first locking piece on each of both sides thereof on a cable side, the second cover has a second locking piece on each of both sides thereof to be engaged with the first locking piece, at least one of the first locking pieces or the second locking pieces includes multiple locking pieces arranged along a circumferential direction of a circle about the rotary shaft, the first locking pieces and the second locking pieces have such a structure that the first locking pieces and the second locking pieces are movable in an approaching direction and movement in a separation direction is restricted in a state in which the first locking pieces and the second locking pieces are engaged with each other. a housing configured to hold multiple terminals; a conductive shell provided outside the housing to cover at least part of the housing; an insulating first cover provided outside the shell to cover at least part of the shell; and a turnable insulating second cover, wherein the shell has, on the cable side, a first contact piece and a second contact piece for sandwiching an external conductor of the cable from both sides to contact the external conductor, and wherein the second contact piece is positioned on a second cover side, and is deformable in a center axis direction of the cable to contact an inner wall surface of the second cover, characterized in that the turnable insulating second cover is coupled to the first cover through a rotary shaft, on a cable side, each of the first cover and the second cover has, on an inner wall surface thereof, a protrusion (42, 62) for biting an external insulator of the cable to fix the cable, the first cover has a first locking piece on each of both sides thereof on a cable side, the second cover has a second locking piece on each of both sides thereof to be engaged with the first locking piece, at least one of the first locking pieces or the second locking pieces includes multiple locking pieces arranged along a circumferential direction of a circle about the rotary shaft, the first locking pieces and the second locking pieces have such a structure that the first locking pieces and the second locking pieces are movable in an approaching direction and movement in a separation direction is restricted in a state in which the first locking pieces and the second locking pieces are engaged with each other.