FIELD: machine building.
SUBSTANCE: invention on a whole relates to fasteners. In particular, the invention relates to nuts and bolts with integral base in form of the truncated cone. The multi-facet fasteners has casing with side facets, integral base and internal cylindrical wall with thread passing through the multi-facet fastener, at that the base contains facets in form of depressions relatively to the truncated cone surface of the base, at that each side facet of the casing is adjacent with the facet in form of the depression.
EFFECT: device ensures uniform effective height of the wrench clamping for stamped fastener and for the machined fastener.
10 cl, 12 dwg
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