1.

The thickness of hexagonal lock nut may be in the range of _______. (d - Diameter of the bolt)

A. 0.2 d to 0.3 d
B. 0.6 d to 0.8 d
C. 1.6 d to 2.8 d
D. 3.6 d to 4.8 d
Answer» C. 1.6 d to 2.8 d


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