3a external thread class right-hand external 0.812" overall length plug, tube fitting flared (note: drilled hole is optional should not be considered as a separating characteristic unf external thread series
3a all ends thread class 12 all ends thread quantity per inch ist end bulkhead 1.062-12 in., unj, cl 3a passivate surface treated unj all ends thread series
3a all ends thread class 2.847" overall length 12 all ends thread quantity per inch passivate body surface treated male coupling half un all ends thread series
Used on aircraft, galaxy c-5. 3b all ends thread class 12 all ends thread quantity per inch weapon system essential cadmium surface treated unj all ends thread series