National Stock Number
4240-01-075-5550
National Stock Number (NSN) 4240-01-075-5550, or NIIN 010755550, (breathing apparatus,oxygen generating) was assigned April 23, 1979 in the Federal Logistics Information System (FLIS). NIIN 010755550 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 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 13, 2020, 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. There is no information in the HMIRS; however, the NSN is in an FSC in Table II of Federal Standard 313 and an MSDS may be required by the user. The requirement for an MSDS is dependent on a hazard determination of the supplier or the intended end use of the product. NSN 4240010755550 does not contain precious metals.
This information was last updated on Aug 01, 2025.