3a external thread class right-hand external 1.281" overall length 12 external thread quantity per inch passivate surface treated plug, tube fitting flared (note: drilled hole is optional should not be considered as a separating characteristic un external thread series
Used on heavy equipment, truck tractor, m1070. 2a all ends thread class weapon system essential flared w/ center wrenching facility unf all ends thread series
3a external thread class right-hand external 0.672" overall length passivate surface treated plug, tube fitting flared (note: drilled hole is optional should not be considered as a separating characteristic unf external thread series