Split cotter pins are simple, highly effective metal fasteners used to secure machinery components. They prevent nuts, bolts, and pins from vibrating loose during operation.

A split cotter pin consists of a single piece of wire bent in half, forming a rounded eyelet head at one end and two unequal tines at the other.

• The Design: The unequal length of the tines makes them easy to separate during installation.
• The Mechanism: You insert the pin into a pre-drilled hole (often in a clevis pin or a castellated nut).
• The Locking Action: Once inserted, you bend the tines outward to lock the pin firmly in place.

⚙️Key Applications and Uses

• Castellated Nuts: Secures wheel bearings and automotive steering linkages.
• Clevis Pins: Locks pivot points on construction and agricultural machinery.
• Marine Rigging: Holds critical sailboat rigging secure against rough waves.
• Aeronautics: Provides fail-safe mechanical backups on control rods.