This is a sole-source procurement for a specific NSN part requiring engineering source approval; only the approved source holds the essential technical data and manufacturing knowledge. An alternate source must qualify through the design control activity and government engineering approval. The government intends to negotiate with only one source under FAR 6.302-1, but all responsible parties may submit capability statements or proposals for consideration. No competitive solicitation is being issued at this time, and award will only be made to offerors meeting all qualification requirements at time of award.