National Stock Number
4240-00-491-0494
National Stock Number (NSN) 4240-00-491-0494, or NIIN 004910494, (canister,gas mask) was assigned July 2, 1974 in the Federal Logistics Information System (FLIS). This NIIN is Available for Manual Assignment. This NSN replaces 1 stock number, 4240012493549.
There are 4 manufacturer part numbers associated with this NSN. 2 of those 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 Apr 01, 2020, this NSN's acquisition method was noted as: Not established. Not established.
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. Information is in the Hazardous Materials Information Resource System (HMIRS). NSN 4240004910494 contains an unknown precious metal.
This information was last updated on Aug 01, 2025.