2a 1st end thread class supports clark model 290m; tractor, wheeled, ind., diesel driven; med dbp, nsn 2420000889384, w/rops nsn 2420010590090 cadmium surface treated unf 1st end thread series
Used on aircraft, hercules c-130. 2a 1st end thread class 1st end bulkhead 0.438-20 in., cl 3a, unf; weapon system essential anodize outside surface treated unf 1st end thread series