Used on aircraft; grumman model no.a10; radar; next generation radar (nexrad). 2a 1st end thread class 24 1st end thread quantity per inch nptf 3rd end thread series
3a 2nd end thread class fitting shall be polytetrafluoroethylene coated on interal surface only to a distance of 0.190 min 0.240 max in. deep passivate surface treated unjf 2nd end thread series