Cotter Pin (Split Pin)

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Cotter pins are generally used to prevent a machine part from moving in the axial direction. The pin is inserted in a hole across a cylinder and its protruding ends are bent to stop it from falling out. The cross section of the cotter pin is a semicircle.

Contributed by: Sándor Kabai (January 2009)
Open content licensed under CC BY-NC-SA




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