This procurement covers NSN 7R-1680-015106791-CB, IAW ref 44035962AA01, quantity 10 each, with delivery FOB origin. The item is flight-critical and requires Government source approval, so only previously approved sources have been solicited for this sole-source acquisition under FAR 6.302-1. Any alternate source must qualify through the design control activity's Government-approved procedures and must submit all required technical data per the NAVSUP WSS Source Approval Information Brochure with its proposal. Interested parties may express capability, but if not already approved, new