A locking element for a push-pull connector for connecting the push-pull connector to a complementary plug socket, comprising: - a cylindrical base extending along a connection direction starting from an initial position (AP); - a cylindrical locking area which together with the cylindrical base forms the locking element, the locking area extending along the connection direction starting from the base to an end position (EP), the locking area further comprising: - at least one guide wall extending along the connection direction starting from the base to the end position (EP); and - at least one spring extending along the connection direction starting from the base , the at least one spring having a nose and the at least one spring being spaced apart from the at least one guide wall by recesses , characterized in that the at least one spring , in an actuated state, contacts a termination plane (AE) that is spanned orthogonally to the connection direction at the end position (EP), wherein the at least one spring has a middle portion and an end portion , and the middle portion extends from the base toward the end position (EP), wherein the middle portion connects the base and the end portion , and wherein an inner surface of the end portion is inclined with respect to the connection direction by an angle α. - a cylindrical base extending along a connection direction starting from an initial position (AP); - a cylindrical locking area which together with the cylindrical base forms the locking element, the locking area extending along the connection direction starting from the base to an end position (EP), the locking area further comprising: - at least one guide wall extending along the connection direction starting from the base to the end position (EP); and - at least one spring extending along the connection direction starting from the base , the at least one spring having a nose and the at least one spring being spaced apart from the at least one guide wall by recesses , characterized in that the at least one spring , in an actuated state, contacts a termination plane (AE) that is spanned orthogonally to the connection direction at the end position (EP), wherein the at least one spring has a middle portion and an end portion , and the middle portion extends from the base toward the end position (EP), wherein the middle portion connects the base and the end portion , and wherein an inner surface of the end portion is inclined with respect to the connection direction by an angle α. - at least one guide wall extending along the connection direction starting from the base to the end position (EP); and - at least one spring extending along the connection direction starting from the base , the at least one spring having a nose and the at least one spring being spaced apart from the at least one guide wall by recesses , characterized in that the at least one spring , in an actuated state, contacts a termination plane (AE) that is spanned orthogonally to the connection direction at the end position (EP), wherein the at least one spring has a middle portion and an end portion , and the middle portion extends from the base toward the end position (EP), wherein the middle portion connects the base and the end portion , and wherein an inner surface of the end portion is inclined with respect to the connection direction by an angle α. wherein the at least one spring has a middle portion and an end portion , and the middle portion extends from the base toward the end position (EP), wherein the middle portion connects the base and the end portion , and wherein an inner surface of the end portion is inclined with respect to the connection direction by an angle α. <EOS>