Chinese supplier of the carbon steel zinc plated cotter pins for locking and holding the object

A cotter pin (also known as a cotter key) is a metal fastener with two tines that are bent during installation, similar to a staple or rivet. Typically made of wire with a half-circular cross section.

A cotter pin is a fastener that is placed through two holes on one end of a clevis pin. It is used for locking and to hold an object in place. It is commonly split in the middle and has two tines that can be bent around the nut or bolt to secure machinery.

Split cotter pins have multiple individual styles, each portraying a different kind of wire terminus.