A connector, comprising: at least one insulator body designed to receive a plurality of contact portions of at least one cable end; a collet formed in one piece, comprising: at least one cable holding element designed to fix said at least one cable end in an operating state of the connector, and at least one insulator holding device holding said at least one insulator body on the collet; and a sleeve element at least partially surrounding said at least one insulator body and at least partially surrounding the collet; wherein the collet has an outer lug protruding outward with respect to the longitudinal axis of the collet, wherein the sleeve element has at least one lug recess designed to at least partially receive said at least one outer lug in order to block a rotary movement of the collet relative to the sleeve element about the longitudinal axis of the collet; and characterized in that said at least one insulator body has at least one block projection protruding from an outer surface of the insulator body; wherein the collet has at least one block recess at least partially receiving said at least one block projection in the operating state; wherein the sleeve element has at least one sleeve block recess at least partially receiving said at least one block projection in the operating state, so that the block projection is designed as a continuous anti-rotation lock of the connector against a relative rotary motion of said at least one insulator body, the collet, and the sleeve element. at least one insulator body designed to receive a plurality of contact portions of at least one cable end; a collet formed in one piece, comprising: at least one cable holding element designed to fix said at least one cable end in an operating state of the connector, and at least one insulator holding device holding said at least one insulator body on the collet; and at least one cable holding element designed to fix said at least one cable end in an operating state of the connector, and at least one insulator holding device holding said at least one insulator body on the collet; and a sleeve element at least partially surrounding said at least one insulator body and at least partially surrounding the collet; wherein the collet has an outer lug protruding outward with respect to the longitudinal axis of the collet, wherein the sleeve element has at least one lug recess designed to at least partially receive said at least one outer lug in order to block a rotary movement of the collet relative to the sleeve element about the longitudinal axis of the collet; and characterized in that said at least one insulator body has at least one block projection protruding from an outer surface of the insulator body; wherein the collet has at least one block recess at least partially receiving said at least one block projection in the operating state; wherein the sleeve element has at least one sleeve block recess at least partially receiving said at least one block projection in the operating state, so that the block projection is designed as a continuous anti-rotation lock of the connector against a relative rotary motion of said at least one insulator body, the collet, and the sleeve element.