Q. Purpose of cotter pin is

A
Fasten the shaft
B
Prevent cotter from dropping off
C
Prevent nut from loosening
D
Keep splines from loosening
Solution:
  • A cotter pin is a simple fastener that’s used to secure a bolt in place.
  • Consisting of a U-shaped piece of metal, it’s inserted through the hole of a bolt, after which the ends are twisted together.
  • The cotter pin secures the bolt in place so that it’s less likely to loosen and come out.
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