National Stock Number
1660-01-522-4255
National Stock Number (NSN) 1660-01-522-4255, or NIIN 015224255, (oxygen system,ejection seat,aircraft) was assigned July 29, 2004 in the Federal Logistics Information System (FLIS). NIIN 015224255 was cancelled on May 8, 2012, 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) 52812. [AN EJECTION SEAT / EJECTION SEAT HARNESS MOUNTED SYSTEM WHICH PRIMARILY PROVIDES THE PILOT WITH OXYGEN FROM MAIN OXYGEN SUPPLY IN NORMAL FLYING CONDITIONS. IN CASE OF EMERGENCY SUCH AS EJECTION, DAMAGED HOSES, AND THE LIKE, IT PROVIDES THE SAME FUNCTION AFTER DISCONNECTION OR DEPRIVATION FROM MAIN OXYGEN SUPPLY. IT GENERALLY CONSISTS OF AN OXYGEN REGULATOR, A CONNECTION BOX, AN ANTI-G VALVE, HOSES, FITTINGS, EMERGENCY OXYGEN SUIT, AND THE LIKE. EXCLUDES:OXYGEN SYSTEM,AIRCRAFT SURVIVAL KIT.]. This item does not have a nuclear hardened feature or any other critical feature 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 1660015224255 does not contain precious metals.
This information was last updated on Aug 01, 2025.