The requirement is for 4 each of a part identified by NSN 1H-5845-016868585-WN under TDP version 007, delivered FOB origin. This part requires engineering source approval by the design control activity, and the approved source(s) hold essential data rights, manufacturing/repair knowledge, or technical data not economically available to the Government. An alternate source must qualify under procedures approved by the cognizant Government engineering activity. Specifications and standards can be obtained from DODSSP/DAPS in Philadelphia, PA, or via ASSIST-Online, but patterns, drawings, deviation lists, and purchase descriptions are not stocked at DODSSP. The Government is not using FAR Part 12 commercial-item procedures, though interested parties may identify their interest and capability to satisfy the requirement with a commercial item.