This opportunity is for the acquisition of 3 units of a specific part (NSN 7R-5845-016590089-CB) that requires engineering source approval from the design control activity, as the government lacks economically available technical data. The government intends to solicit and negotiate with only one approved source under FAR 6.302-1, but all responsible parties may submit capability statements or proposals for consideration. Delivery is FOB origin, and the part is flight critical, requiring government source approval prior to award. Proposals from non-approved sources must include detailed technical data as specified in the NAVSUP WSS Source Approval Brochure, or they will not be considered. The location for performance is not specified, and no budget amount is provided.