The requirement is for NSN 7R-1680-016061832-EK, quantity 45 EA, delivered FOB origin. The part is flight critical and/or lacks adequate technical data for full and open competition, so Government source approval is required before award and only previously approved sources have been solicited. Approved sources retain essential design, manufacturing/repair, or technical data, and alternate sources must qualify under the design control activity’s approved procedures. New sources must submit the required NAVSUP WSS Source Approval Brochure information with their offer; offers missing required data will not be considered. The Government intends to negotiate with only one source under FAR 6.302-1, and while responsible sources may identify interest/capability, the Government will decide whether to conduct a competitive procurement based on responses.