2a thread class right-hand 2.340" overall length 0.250" overall width 56 thread quantity per inch contact removed from position no. 30 for polarization unc thread series
Used on approach lighting system, medium intensity, runway (malsr)prpy. 3.375" overall length 2.510" overall width K1, ti 6850.85, fa 10290, malsr/rms, vol i of iii, sec 1-9 & 11, pg 8-17