Dowel with spredebøsning

摘要

1. A plug with expansible sleeve, an expander body retractable by means of a screw into the expansible sleeve, and a bearing element against which the expansible sleeve is braced as the expander body is retracted, characterized in that, as bearing element there is arranged on the screw (2) a ring-shaped spring member (11, 11') which has an external diameter projecting beyond the diameter of the expansible sleeve (1) and which can be compressed to the diameter of the expansible sleeve (1).