Used on 2320-01-097-0248,2320-01-097-0249,2320-01-100-7672,2320-01-097-0260,2320-01-195-7641, hemtt family (heavy expanded mobility tactical trucks). 0.215" hole diameter 0.432" outside diameter 0.032" material thickness 0.008 in. w by 0.109 in. radius groove located 180 deg from top on bottom portion of washer slotted