Used on alum box m872a4 for 2330-01-497-0706; trailer, flat bed. right-hand 20 thread quantity per inch nut, hex 1/4-20 ny lock zinc zinc surface treated
Used on helicopters (h1) (actuator, hydraulic). 3b thread class right-hand 18 thread quantity per inch nut, lock, cylinder; navy: nut, lkg, cyl, aircraft next higher assy is nsn 1650-01-034-8498; cylinder assy, actuating, linear anodize surface treated
2b thread class right-hand 56 thread quantity per inch tensile strength shall be 70 ksi; surface texture shall be ra 125 microinches in accordance with ansi/asme B46.1 passivate surface treated