National Stock Number
2840-01-290-7491
National Stock Number (NSN) 2840-01-290-7491, or NIIN 012907491, (shroud segment,turbine,aircraft gas turbine engine) was assigned December 16, 1988 in the Federal Logistics Information System (FLIS). NIIN 012907491 was cancelled on June 2, 2001, with a cancelled status of "Item is Cancelled - USE." This NSN was replaced by NSN 2840013079564. This NSN does not replace any other NSNs.
There are no manufacturer part numbers associated to this NSN.
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 2840012907491 does not contain precious metals.
This information was last updated on Aug 01, 2025.