National Stock Number
2840-00-396-4271
National Stock Number (NSN) 2840-00-396-4271, or NIIN 003964271, (housing,antifriction bearing,air) was assigned January 1, 1963 in the Federal Logistics Information System (FLIS). This NIIN is Available for Manual Assignment. This NSN replaces 1 stock number, 2840003907318.
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 assigned to Item Name Code (INC) 50345. [A HOUSING DESIGNED TO SURROUND, RETAIN, SUPPORT, AND PROTECT AN ANTIFRICTION BEARING MOUNTED ON A SHAFT, TURBINE, AIRCRAFT GAS TURBINE ENGINE. IT MAY ALSO ACT AS A SUMP TO COLLECT THE LUBRICANT TO BE PUMPED BACK TO THE TANK.]. There is no data in the HMIRS and the NSN is in an FSC not generally suspected of containing hazardous materials. NSN 2840003964271 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.