Internal thread dowel for spreading concrete and stone for fissurated building material, has tapered nut held in expansion sleeve, where expansion sleeve is larger in diameter than bore hole before insertion of dowel into bore hole

摘要

The dowel has a tapered nut (3) undetachably held in an expansion sleeve (1) and protected against twist. A longitudinal slot (9) is formed in a region of the tapered nut, and the expansion sleeve sitting in the area of the tapered nut is larger in diameter than a bore hole before the insertion of the dowel into the bore hole. A longitudinal slot (2) of the expansion sleeve and the longitudinal slot of the tapered nut are identical in width, where the tapered nut is cold deformed from flat material.