2b thread class right-hand 2.206" overall length 1.340" overall width 18 thread quantity per inch nickel surface treated straight type w/cable clamp unef thread series
3b thread class right-hand 1.138" overall length 1.138" overall width 40 thread quantity per inch 0.550 in. cutout on one side chromate surface treated square shape unjc thread series
Used on NRSTS. 2a single mounting facility thread class 1.281" overall length 0.910" overall width 48 single mounting facility thread quantity per inch unc single mounting facility thread series