FIELD: construction.
SUBSTANCE: dowel contains screw part that includes taper tip and core, and head part that is connected with its one end to core and has flange on the second end. Dowel is arranged with longitudinal cavity that has lead-in section of hexahedral cross section from the side of flange. Part of cavity stretched after lead-in section has cylindrical shape with circular cross section. Length of lead-in section makes 2.5-3.5 of cylinder diameters of specified cylindrical part of cavity. In facets of lead-in sections of cavity in area of coupling with cylindrical part protrusions are formed, length of which does not exceed width of lead-in section hexahedron facet.
EFFECT: simplification and quality increase of dowel installation in walls and roofs of buildings, when fixing sheet materials on them.
4 cl, 7 dwg
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|---|---|---|---|
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