This opportunity is for the acquisition of 12 units of a specific part (NSN 0Q-5905-016339487-CL) that requires engineering source approval from the design control activity to maintain quality. Only previously approved sources are being solicited, as the item is flight critical and technical data is not available for full competition. Delivery is FOB Origin, and the performance location is not specified. No budget amount is provided. Prospective bidders who are not approved sources must submit detailed qualification information as outlined in the NAVSUP WSS Source Approval Brochure to be considered.