2b thread class right-hand 18 thread quantity per inch nuclear hardness critical item nickel surface treated straight type w/cable clamp unef thread series
2b single mounting facility thread class 5.655" overall length 2.130" overall width 24 single mounting facility thread quantity per inch special grooved shaft tap, square frame unc single mounting facility thread series
2a single mounting facility thread class 0.437" single mounting facility thread length 3.283" overall length tap, circular, bushing mount unef single mounting facility thread series
Used on combat control acoustic an/bsy-1(v). 2b thread class right-hand 2.790" overall length 0.902" overall width 32 thread quantity per inch unc thread series