Used on 92f support equipment, f-16 aircraft. 2a 1st end thread class 12 1st end thread quantity per inch passivate inside surface treated nptf 2nd end thread series
3a thread class right-hand 1.535" overall length 0.790" overall width 0.050 in. min to 0.055 in. max dia hole in fluid pwssage for restriction 1 fluid connection