FIELD: mechanical engineering.
SUBSTANCE: invention relates to threaded connections. A nut fastening device comprises a bolt, a nut, two shaped washers of similar design and two tightening screws. The above shaped washers of similar design are set below and above the nut with their inner ridges contacting with the flats on the bolt body. The nut is fastened by folding moveable staples of shaped washers and fixing threaded bushes of both shaped washers by tightening screws.
EFFECT: increasing operational reliability and reducing chances for self-unscrewing of the nut under vibration.
2 dwg
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