A load pin and clevis joint for joining two or more mechanical components together. The load pin includes a retention feature that requires two separate motions to unlock the pin. In a locked state, the load pin is secured across both halves of a clevis joint so that it completely spans an open span between the two clevis halves. In the preferred embodiment, the two motions required to unlock the load pin are (1) moving the load pin linearly; and (2) rotating the load pin.