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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 [Wrong Answer] |
B. | a slot is cut partly is middle of nut and then slot reduced by tightening a screw [Wrong Answer] |
C. | a hard fiber or nylon cotter is recessed in the nut and becomes threaded as the nut is screwed on the bolt causing a tight grip [Wrong Answer] |
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] |
E. | none of the above. [Wrong Answer] |