2b single mounting facility thread class 13.062" overall length 4.750" overall width 20 single mounting facility thread quantity per inch tap, circuit selector unc single mounting facility thread series
2a thread class right-hand 1.234" overall length 24 thread quantity per inch shell to shell conductivity shall be one milliohm or less unef thread series
2a thread class right-hand 33.16mm overall length 10 thread quantity per inch shell to shell conductivity shall be one milliohm max iso m thread series
2a thread class right-hand 1.234" overall length 28 thread quantity per inch shell to shell conductivity shall be one milliohm or less; critical application unef thread series