FIELD: connection of members. SUBSTANCE: nut has base 1 and body 4 with tapped hole which are interconnected. Holes for body in base and section 7 of body are hexahedral. Fins 9 of hexahedron 8 are deformed axially till they rest against base 1 forming projections 10. Height of hexahedrons is 0.2 to 0.5 of nominal diameter of thread and diameter of inscribed circle is 1.0 to 1.15 of diameter of cylindrical portion of nut. EFFECT: enhanced reliability. 4 dwg
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