2a thread class right-hand 2.820" overall length 0.980" overall width polarization positions a, b, and c pin guides, position d socket guide unc thread series
2a thread class right-hand 2.000" overall length 0.828" overall width 40 thread quantity per inch drawn hood style in lieu of standard hood style unc thread series
2a thread class right-hand 2.000" overall length 0.828" overall width 40 thread quantity per inch solid drawn hood in lieu of standard hood unc thread series