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 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 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. <EOS>