FIELD: construction.
SUBSTANCE: invention relates to the dowel for crumbling supporting material. Dowel comprises the supporting ring made of metal sheet workpiece, end and the expandable tubular body with expandable means between the ring and end, designed with possibility to accommodate the element for attachment of part to the supporting mechanism and in order to expand the body and dowel anchoring in the supporting material. Expanding means comprise a tubular body portion, which is partially carved in order to form cutting after spiral folding of the workpiece, and means of partially carved portion of tubular body, providing continuity of cutting.
EFFECT: improving the quality of dowel cutting.
7 cl, 7 dwg
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