This is a long-term contract for a specific part (NSN 2910014311324) that requires engineering source approval from the design control activity. The part has an estimated annual demand of 6,434 units, and only the listed approved sources and their specific part numbers are currently qualified. An alternate source must qualify through the design control activity's procedures, which require government engineering approval. Interested sources must complete and return the attached market survey and spreadsheet to the specified point of contact.