1.

THE__________NUT_IN_WHICH_SMALL_PIN_IS_SCREWED_IN_THE_PIECE_ADJOINING_THE_NUT_SO_THAT_IT_TOUCHES_ONE_OF_THE_FACES_OF_THE_HEXAGONAL_NUT_WHICH_IS_SUFFICIENT_TO_PREVENT_ITS_GETTING_LOOSE.?$

A. Grooved nut
B. Penn nut
C. Castle nut
D. Ring nut
Answer» C. Castle nut


Discussion

No Comment Found