2a 1st end thread class 20 1st end thread quantity per inch supports clark model 290m; tractor, wheeled, ind., diesel driven; med dbp, nsn 2420000889384, w/rops nsn 2420010590090 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