This opportunity is for the acquisition of 75 units of a specific part (NSN 7R-7021-016552573-E8) that requires engineering source approval due to its flight-critical nature and limited technical data. Only previously approved sources have been solicited, and any new source must submit detailed qualification information as outlined in the NAVSUP WSS Source Approval Brochure. The government intends to negotiate with only one source under FAR 6.302-1, but all responsible parties may submit proposals. Delivery is FOB origin, and the part requires unique design capability and data rights held by the approved source. No specific budget amount or performance location is mentioned in the description.