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Mr. Dubey • 100.64K Points
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Q. Castle nut is a locking device in which

  • (A) One smaller nut is tightened over main nut and main nut tightened against smaller one by loosening, creating friction jamming
  • (B) A slot is cut partly is middle of nut and then slot reduced by tightening a screw
  • (C) A hard fibre or nylon cotter is recessed in the nut and becomes threaded as the nut is screwed on the bolt causing a tight grip
  • (D) Through slots are made at top and a cotter pin is passed through these and a hole in the bolt, and cotter pin spitted and bent in reverse direction at other end
  • Correct Answer - Option(D)
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  • Filed under category Machine Design
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