Clevis Pin In various machines and structures, the Clevis Pin is a simple yet versatile fastener. It typically consists of a pin with a round or flat head, used together with holes and often paired with cotter pins or retaining rings for quick assembly and disassembly. Grooved Pin with Head Another common variant is the Grooved Pin with Head. While it looks similar to a clevis pin, it has grooves on the body that generate extra grip during installation, improving anti-looseni