2b all threaded hole thread class 2.880" overall length 1.660" overall width 32 all threaded hole thread quantity per inch unc all threaded hole thread series
2b single mounting facility thread class 3.187" overall length 1.891" overall width 24 single mounting facility thread quantity per inch tap, circuit selector unc single mounting facility thread series
Used on approach lighting system medium intensity runway (malsr). 5.000" overall length 1.719" overall width 3A2A6K1, ti 6850.54, instruction book, malsr, hv reil