A locking device includes a shaft, a locking head joined to the shaft, and a lock body having a lock opening for receiving a locking end of the shaft. A latch member is disposed within the lock body and includes a shaft aperture for receiving the locking end of the shaft therethrough. The shaft aperture includes an edge portion spring biased radially inward of the lock opening to engage the recessed portion with the edge portion when the locking end of the shaft is disposed in the lock opening. A locking member is disposed within the lock body. Rotation of the locking member from a locked condition to an unlocked condition moves the edge portion of the shaft aperture out of engagement with the recessed portion of the shaft to permit withdrawal of the shaft from the lock opening.