Correct option is A
A
split pin (also called a
cotter pin) is used to lock a
castle nut securely in place. The castle nut has
slots or notches on its cylindrical body that allow the split pin to pass through a hole in the bolt or shaft and lock the nut, preventing it from loosening.
Prevents Rotation: The split pin stops the castle nut from rotating under vibrations or dynamic loads.
Easy to Use: The split pin is inserted through the nut and bolt and then bent to secure the nut.
Common in Automotive Applications: Widely used in
axles, steering mechanisms, and suspension systems for safety-critical connections.
