3a thread class right-hand 2.1250" overall length 0.1895" bore diameter 28 thread quantity per inch two lubricators chromium inner member surface treated ball type unf thread series
3a thread class right-hand 1.8180" overall length 0.2495" bore diameter 24 thread quantity per inch cadmium surface treated ball type unf thread series
0.3800" overall length id reamed with reverse spiral reamer, od ground cadmium left end surface of body surface treated 22c solid, external flange one end