The invention relates to a clamping connector for the transmission of tensile and compressive forces between two concrete elements in building construction, in which the transmission of tensile and compressive forces in concrete elements cast in the concrete elements anchor rails and engaging it Hamm or hook screws takes place. The invention is characterized in that the clamping connector (1) has a central part (3) connecting the hammer or hook-head screws (2), and in that the hammer or hook-headed screws (2) and all screw or lock nuts (4) only with right - Or only with left-hand thread (5) or (6), in particular with right-hand thread (5) are provided.
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