Hitch Pin vs. Cotter Pin
One is a reusable quick release; the other is a one-time bent-wire lock.
| Feature | Hitch Pin | Cotter Pin |
|---|---|---|
| Reuse | Unlimited | Usually single-use |
| Speed | Pull the clip and remove | Bend, remove, replace |
| Security | Clip can be knocked off | Bent ends stay put |
| Load | Carries shear load | Retains only — carries no load |
| Best for | Tow hitches, tractors, drawbars | Castellated nuts, linkages |
Verdict
Hitch pins are the fast, reusable choice for equipment. Cotter pins are the cheap, tamper-resistant lock for a clevis or castle nut.