This requirement is for 7 units of NSN 7R-1680-015979798-RQ, reference 3671200C01101-303, delivered FOB origin. The item is flight critical and requires Government engineering source approval by the design control activity; only previously approved sources have been solicited, and the Government intends to negotiate with only one source under FAR 6.302-1. New sources must submit the source-approval information specified in the applicable NAVSUP WSS Source Approval Brochure with their offer, and offers lacking required data will not be considered. The Government will not use FAR Part 12 commercial-item procedures, and drawings are not available. Interested parties may still identify their interest and capability or propose a commercial item to the contracting officer.