National Stock Number (NSN) 2840-01-347-8985, or NIIN 013478985, (shroud segment,turbine,aircraft) was assigned October 31, 1991 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, with the most recent procurement date of May 15, 2012. There have been 2 contracts issued for this part number, with 4 awards given. The US Government has only awarded those contracts to one supplier. The last contract numbers awarded were: SPRTA109G0004, SPRTA109G0004, SPRTA109G0004, FA810405G0004, FA810405G0004. The total value of the awarded contracts has been US$ 50,825.22.
This NSN is unique to one weapons system.
There has been a small amount of demand for this national stock number. The demand for this NSN originated from less than 5 countries. The 24 month forecast from the US Government for this part number has high volatility, with an estimated forecasted value of US$ 10,194. Based on a planned procurement review by the Primary Inventory Control Activity (PICA) on May 30, 2008, this NSN's acquisition method was noted as: Acquire directly from the actual manufacturer, whether or not the prime contractor is the actual manufacturer. This part requires engineering source approval by the design control activity in order to maintain the quality of the part. An alternate source must qualify in accordance with the design control activity's procedures, as approved by the cognizant Government engineering activity. Valid AMCs: 1, 2, 3, 4 and 5.
This NSN is assigned to Item Name Code (INC) 50603. [A STATIONARY ARCHED METAL SEGMENT USED TO ESTABLISH CLEARANCE AND A SEAL FOR THE TIP OF A BLADE, TURBINE ROTOR, AIRCRAFT GAS TURBINE ENGINE. THE INNER DIMENSION MAY HAVE OPEN HONEYCOMB OR COMPOSITION FILLED SURFACE OR MAY BE FORMED BY THE KNIFE EDGE METAL PROTRUSIONS OF A SEAL RING, LABYRINTH, AIRCRAFT GAS TURBINE ENGINE.]. This item does not have a nuclear hardened feature but does have other critical feature(s) such as tolerance, fit restriction or application. There is no data in the HMIRS and the NSN is in an FSC not generally suspected of containing hazardous materials. NSN 2840013478985 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 Jul 01, 2025.