This opportunity is for the acquisition of 4 units of a specific part (NSN 7R-1730-014741646-H1) that requires engineering source approval from the government due to its flight-critical nature. Only previously approved sources have been solicited, and the time required to approve a new source is too long to delay the award. If you are not an approved source, you must submit detailed technical data as outlined in the NAVSUP WSS Source Approval Brochure with your proposal. Delivery is FOB origin, and the government intends to negotiate with only one source under FAR 6.302-1. All responsible sources may submit capability statements or proposals for consideration.