Used on part of cab support reinforcement kit 2540-01-533-8806; nha nsn m915a3 armor kit 2540-01-523-1336; armored version of m915a3 2320-01-523-2486. washer star
Used on part of wheel housing armor kit 2540-01-533-8810; nha nsn m915a3 armor kit 2540-01-523-1336; armored version of m915a3 2320-01-523-2486. 1/2 external tooth lockwasher