3a external thread class right-hand external 1.265" overall length 12 external thread quantity per inch precision type, mark with equilateral triangle on hex face or on two opposite hex flats passivate surface treated plug, tube fitting flared (note: drilled hole is optional should not be considered as a separating characteristic unj external thread series
3a 1st provision thread class right-hand 1st provision 0.750" 1st provision thread length 2.000" outside diameter outside dia given is 2 in. hex stock across flats