Used on 1520-01-355-8250; helicopter, attack. 2b thread class right-hand 16 thread quantity per inch hex nylon insert locknut zinc except insert surface treated
Used on 2350-01-538-8373, knight,armored. 8.5mm hole diameter 12.7mm outside diameter 1.9mm material thickness spring lock washers for socket head cap screws oil surface treated split helical-right hand
Used on mrap - unique nsn - 2 mrap variants. 10.5mm hole diameter 18.1mm outside diameter 2.2mm material thickness 10mm din 127 b black split lock washer split helical-right hand