This requirement is for 5 units of NSN 7R-5895-016300207-P8, reference 186400-1, with delivery FOB Origin. The part requires engineering source approval from the design control activity to maintain quality. Only approved sources with unique design capability, manufacturing/repair knowledge, or data rights can supply or repair it, as this data is not economically available to the Government. Alternate sources must qualify through design control activity procedures approved by the cognizant Government engineering activity. This is a restricted, source-controlled procurement.