National Stock Number
4240-00-421-5798
National Stock Number (NSN) 4240-00-421-5798, or NIIN 004215798, (breathing apparatus,oxygen gener) was assigned September 20, 1972 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.
Based on a planned procurement review by the Primary Inventory Control Activity (PICA) on Jan 10, 1998, this NSN's acquisition method was noted as: Acquire directly from the actual manufacturer, whether or not the prime contractor is the actual manufacturer. The rights to use the data needed to purchase this part from additional sources are not owned by the Government and cannot be purchased. Valid AMCs: 1, 2, 3, 4 and 5.
This NSN is assigned to Item Name Code (INC) 17300. [A PORTABLE RESPIRATORY PROTECTIVE DEVICE DESIGNED TO GENERATE OXYGEN FROM CHEMICALS AND PROVIDE RESPIRABLE AIR TO THE WEARER BY MEANS OF A CLOSED RECYCLING SYSTEM WITHOUT RECOURSE TO ATMOSPHERIC AIR SUPPLY.]. This item does not have a nuclear hardened feature or any other critical feature such as tolerance, fit restriction or application. Information is in the Hazardous Materials Information Resource System (HMIRS). NSN 4240004215798 does not contain precious metals.
This information was last updated on Jul 01, 2025.