A 3/32" diameter x 1" length cotter pin is a small metal fastener used to secure components together. It consists of a straight pin with a bulbous head on one end to prevent it from falling out once inserted through a hole.
Cotter pins are commonly used in applications like machinery, automotive, and agricultural equipment to secure castle nuts, clevis pins, or other components that require a locking mechanism. The pin is inserted through a hole, and the bulbous head locks it in place.