National Stock Number
2840-00-566-1751
National Stock Number (NSN) 2840-00-566-1751, or NIIN 005661751, (plug,combustion chamber case,air) was assigned January 1, 1963 in the Federal Logistics Information System (FLIS). This NIIN is Available for Manual Assignment. This NSN does not replace any other NSNs.
There is only one manufacturer part number associated with this NSN. None of the associated part number(s) are considered obsolete. The manufacturer part numbers were originally supplied by one supplier. Today, one supplier is listed as an Active supplier for this NSN. Of the active suppliers, only one supplier is deemed design controlled or valid supply parts.
This part number has not been procured by the US Government in over 5 years.
This NSN is somewhat common among different platforms, belonging to 2 different weapons systems.
Based on a planned procurement review by the Primary Inventory Control Activity (PICA) on Jul 02, 2006, this NSN's acquisition method was noted as: Acquire directly from the actual manufacturer, whether or not the prime contractor is the actual manufacturer. The Government physically does not have in its possession sufficient, accurate, or legible data to purchase this part from other than current source(s). (NOTE: This code is applicable only to parts under immediate buy requirements and only as long as the deficiency is under review for resolution and appropriate recoding.) Valid AMCs: 1, 2, 3, 4 and 5.
This NSN is assigned to Item Name Code (INC) 52955. [A USUALLY ROUND ITEM OF VARIOUS CROSS SECTIONS DESIGNED FOR TEMPORARY INSTALLATION INTO A HOLE IN A CASE, COMBUSION CHAMBER, AIRCRAFT GAS TURBINE ENGINE FOR THE PURPOSE OF PREVENTING AIR FROM ESCAPING DURING ENGINE OPERATION. WHEN REMOVED, THE HOLE IS FOR INSERTING INSPECTION PROBES, BORESCOPES AND THE LIKE. IT MAY BE GROOVED OR TAPERED FOR INSTALLATION AND REMOVAL. IT MAY INCLUDE SPACERS, SPRINGS, RIVETS AND THE LIKE.]. There is no data in the HMIRS and the NSN is in an FSC not generally suspected of containing hazardous materials. NSN 2840005661751 does not contain precious metals.
This NSN is associated to Schedule B 8411997050: parts of gas turbine aircraft engines, other than for use in civil aircraft. The Schedule B End Use is listed as engines and turbines for military aircraft. NAICS classification category 336412: aircraft engine and engine parts manufacturing.
This information was last updated on Aug 01, 2025.