National Stock Number
4240-00-217-2154
National Stock Number (NSN) 4240-00-217-2154, or NIIN 002172154, (canister,gas mask) was assigned January 1, 1963 in the Federal Logistics Information System (FLIS). NIIN 002172154 was cancelled on April 29, 2010, 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.
This NSN is assigned to Item Name Code (INC) 17568. [THE AIR PURIFYING ELEMENT OF GAS MASK, CONSISTING OF A METAL BODY INCLOSING A MECHANICAL FILTER AND A CHEMICAL FILLING WHICH ABSORBS AND NEUTRALIZES TOXIC GASES AND PARTICLES IN THE AIR, ALLOWING PURIFIED AIR TO PASS THROUGH.]. 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 4240002172154 does not contain precious metals.
This information was last updated on Aug 01, 2025.