3b thread class right-hand 0.220" thread length 0.187" outside diameter screen on second end, holes size 0.008, screen open area 0.320, screens 400 particles max, 3000.0 psi max working press
3a thread class right-hand 0.565" err default 1.000" overall length w/four lockingwire holes in top end of outer periphery round slotted, external thread, boss
3a 2nd end thread class 20 1st end thread quantity per inch passivate surface treated threaded external rigid, threaded internal swivel unjf 2nd end thread series