Abstract: A hitch pin assembly is provided for locking equipment, such as a crossbar, to a tractor. The hitch pin comprises a locking pin having a head and a pivoted pull ring serving as the locking mechanism. A spring loaded rod including a keeper notch is retained coaxially within the locking pin. An access slot in the pin is provided in alignment with the notch to allow receipt of the ring as it swings toward the pin for locking. The spring loaded rod is retracted into the locking pin, allowing the keeper notch to capture the pull ring. The rod is then released and the pull ring is securely locked in a positive fashion in position. Pressing the rod back into the pin releases the ring to pivot outwardly from the keeper notch so that the locking pin can be removed.