This notice describes a requirement for a specific NSN part (quantity 2) with delivery FOB origin. The part requires engineering source approval, and only approved sources with unique design capability and data rights can supply or repair it. Alternate sources must qualify in accordance with design control activity procedures approved by the cognizant government engineering activity. Interested parties may obtain relevant military specifications and standards from the DODSSP in Philadelphia, PA. The government intends to solicit with only one source under FAR 6.302-1, but will consider capability statements from all responsible sources.