Used on caterpillar model 830mb four wheel drive industrial tractor. 2b 1st end thread class 24 1st end thread quantity per inch nptf 2nd end thread series
2a 1st end thread class 14 1st end thread quantity per inch supports clark model 290m; tractor, wheeled, ind., diesel driven; med dbp, nsn 2420000889384, w/rops nsn 2420010590090 cadmium surface treated nptf 2nd end thread series
Used on howitzer,sp.-m110. 3a external thread class right-hand external 0.630" overall length cadmium surface treated plug, tube fitting flared w/bleeder holes (note: drilled hole is optional should not be considered as a separating characteristic unf external thread series
2b first fluid end connection thread class 3.190" overall length passivate surface treated coupling assembly unjf first fluid end connection thread series