This opportunity is for the acquisition of 10 units of a specific part (NSN 1R-6685-014434206-SY) that requires engineering source approval from the government due to its flight-critical nature. Only previously approved sources have been solicited, as the part relies on unique design data and manufacturing knowledge not economically available to the government. New sources must submit qualification data per the NAVSUP WSS Source Approval Brochure, but approval timelines typically prevent delaying the award. Delivery is FOB origin, and the government intends to negotiate with only one source under FAR 6.302-1. All responsible sources may submit proposals, which will be considered if received within 45 days of the synopsis publication.