2b internal thread class right-hand internal 17 internal thread quantity per inch w/drilled hole in top, 0.190-24 unc-2b thd by 0.120 deep cap uns internal thread series
3b internal thread class hardness 28-40hrc; 0.650 in. l, 0.625 in. across flats; holes thru hex 0.039 in. dia 0.035 in. from top; BORE0.565 - 0.595 in. dp w/0.370 in. min full thd, per MS33649-04 cap unjf internal thread series
3b internal thread class right-hand internal cap drilled for attachment of safety chain, 0.082 in. dm x 0.156 in. lg at 45 deg angle cap, tube, flared unjf internal thread series
3b internal thread class right-hand internal also incl: link, S9810-1; wire rope, S8959V0050, 4.00 in. lg; cap per AN929A6j passivate surface treated cap, tube, flared unf internal thread series