Used on vortac,very high frequency omirange/tacan; 2gvortac, fa-9996. function: insulator, capacitor; reference data: ti 6820.2, fa 9996, 1A2A1MP2, pg 8-37, vol 8 sec 8
2a single mounting facility thread class 0.437" single mounting facility thread length 3.525" overall length tap, circular, bushing mount unef single mounting facility thread series