Used on family of hemtt vehicles (heavy expanded mobility tactical trucks). 3a 1st end thread class grumman aerospace a-10 aircraft npt 2nd end thread series
2a 2nd end thread class flanged on first end, 0.188 in.thk, and 1.562 in.od w/two radial slots 180 deg apart, 0.127 in.w by 0.094 in. deep passivate surface treated unf all ends thread series
3a all ends thread class color yellow; pressed in fit restrictor 0.220 in. dia, 0.250 in. lg; chamfer on one end 45 deg anodize surface treated flared w/ center wrenching facility unjf all ends thread series