Easy to tighten  Fastener Expertise Q & A    No. 16
No. 16: The main function of the illustrated suspension nut is ______.
A. As a locking device for the joint B. Reduce the rigidity of the bolt system
C. Uniform force on each thread of the nut D. Prevent the bolt from being subjected to bending load
Previous review: For the tight bolt connection subjected to axial variable load, in addition to considering its static strength, its fatigue strength must be checked according to the ______ of the bolt.
A. Maximum working stress B. Minimum working stress C. Average working stress D. Stress amplitude
Answer: D
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