To prevent damage to a work surface while fastening with bolts:

To prevent damage to a work surface while fastening with bolts:

To prevent damage to a work surface while fastening with bolts:





a. Do not over-tighten a nut
b. Use castle nuts only
c. Use toothed lock washers
d. Use flat washers
e. Use a lubricant during threading and tightening






Answer: D


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