Internal thread dowel pin, has sleeve placed in area of tapered nut and with larger diameter than borehole before placing tapered nut in sleeve, where tabs of expansion sleeve are bent to cylindrical part of sleeve

摘要

The pin has a tapered nut (3) undetachably held in an expansion sleeve (1) and protected against twist. The expansion sleeve is placed in the area of the tapered nut and is larger in diameter than a borehole before placing the tapered nut in the expansion sleeve. Lugs (4) are hooked in slots of the tapered nut and moved in the slots. Edges of tabs (5) of the expansion sleeve conically run to the lugs. The tabs of the expansion sleeve are bent to a cylindrical part of the sleeve and attached at a mantle surface (6) of the tapered nut.