National Stock Number
4240-01-679-5256
National Stock Number (NSN) 4240-01-679-5256, or NIIN 016795256, (respirator,air filtering) was assigned March 28, 2019 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. ISO Group has several sources of supply for this NSN.
This part number has been procured by the US Government within the last year, but shows no recent (last 90 days) procurement activity. There have been 13 contracts issued for this part number, with 12 awards given. There is moderate competition for this NSN. The US Government has awarded contracts to 9 different suppliers. The last contract numbers awarded were: SPE8E925P0804, SPE8E925P0813, SPE8E925P0341, SPE8E924V1682, SPE8E923V1935. The total value of the awarded contracts has been US$ 417,559.31.
This NSN is unique to one weapons system.
There has been a small amount of demand for this national stock number. The demand for this NSN originated from less than 5 countries. Based on a planned procurement review by the Primary Inventory Control Activity (PICA) on Jun 21, 2019, this NSN's acquisition method was noted as: Acquire, for the first time, directly from the actual manufacturer rather than the prime contractor who is not the actual manufacturer. The data needed to produce this item from additional sources is not physically available. Valid AMCs: 3, 4 and 5.
This NSN is assigned to Item Name Code (INC) 17294. [AN INDIVIDUAL RESPIRATORY PROTECTIVE DEVICE, DESIGNED TO REMOVE ORGANIC VAPORS, SOLID PARTICLES AND/OR LIGHT CONCENTRATIONS OF POISONOUS GAS IF WITH CHEMICAL CARTRIDGE(S). IT MAY INCLUDE A HOOD DESIGNED TO COVER USER'S HEAD.]. 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 4240016795256 does not contain precious metals.
This information was last updated on Aug 01, 2025.