This opportunity involves the acquisition of 28 units of a specific part (NSN 6K-8145-013567050-SY) that requires engineering source approval from the design control activity due to its flight-critical nature. Only previously approved sources have been solicited, and new sources must submit detailed qualification information as outlined in the NAVSUP WSS Source Approval Brochures. Delivery is FOB origin, and the performance location is not specified. No budget amount is provided in the description. Prospective bidders who are not already approved sources should note that the approval process typically prevents delaying award, and offers lacking required source approval data will not be considered.