R-clips, commonly known as hitch pin clips, secure hitch pins, bent pins, and clevis pins by inserting into a corresponding hole or groove. These clips are designed to prevent the mating pin from loosening or moving out of place. The ridged wire-form structure, characteristic of r-clips, ensures a secure, locked attachment to the mating pin without having to bend it out of shape.
MacDonald uniquely calls these fasteners "bridge hair pins" to differentiate our high-quality parts from others in the industry. However, they are more commonly called "R-clips" and "hitch pin clips."