2a thread class right-hand 0.217" thread length 1.688" overall length 20 thread quantity per inch furnished with one externally relieved body 0.375 nom. in. length passivate ring surface treated unc thread series
3a thread class right-hand 0.602" thread length 24 thread quantity per inch navy special project moveable ring cadmium surface treated swivel unjf thread series
3a thread class right-hand 1.095" thread length 16 thread quantity per inch threads undercut for relief, 0.125 in. max. undercut length cadmium surface treated swivel unjf thread series