National Stock Number
2840-01-321-4451
National Stock Number (NSN) 2840-01-321-4451, or NIIN 013214451, (shroud segment,turbine,aircraft gas turbine engine) was assigned June 18, 1990 in the Federal Logistics Information System (FLIS). NIIN 013214451 was cancelled on December 15, 2017, with a cancelled status of "Item is Cancelled - Inactive." There is no known replacement specified for this stock number. This NSN does not replace any other NSNs.
There are 2 manufacturer part numbers 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 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 2840013214451 contains an unknown precious metal.
This information was last updated on Aug 01, 2025.