Toyu Gold Cotter Pin 20-30-50pcs Clamp U-shaped Bayonet Carbon Steel Safety Bolt Lock

Available Size:
3*70
4*50
4*70
5*70

Gold Cotter Pin Clamp U-shaped Bayonet Carbon Steel Safety Bolt Lock

What Are Cotter Pins Used For? Cotter pins, often referred to as split pins or cotter keys, are common locking pins that secure other fasteners or bolts in place. They’re particularly useful in high-stress applications where other fasteners might be subjected to immense stress and/or vibration.

A cotter is a pin or wedge passing through a hole to fix parts tightly together. In British usage cotter pin has the same meaning, but in the U.S. it means a split pin.