Used on 2320-01-371-9583 1 1/4 ton truck vehicle system (hmmwv). avk a-l series standard upset type nut thread designation ALS7-420-260; grip 0.210 inch; hole size 0.391 inch; body diameter 0.390 inch; maximun head diameter 0.500 inch; length 0.720 inch
Used on part of the attaching hardware kit nsn 2540-01-533-9344; nha nsn m915a3 armor kit nsn 2540-01-523-1336; armored version of m915a3 nsn 2320-01-523-2486. right-hand 20 thread quantity per inch