National Stock Number
4240-12-140-8146
National Stock Number (NSN) 4240-12-140-8146, or NIIN 121408146, (canister,chemical-biological mask) has an unknown assigned date. NIIN 121408146 was cancelled on January 2, 2013, with a cancelled status of "Item is Cancelled WITHOUT Replacement." There is no known replacement specified for this stock number. This NSN does not replace any other NSNs.
There are 10 manufacturer part numbers associated with this NSN. None of the associated part number(s) are considered obsolete. The manufacturer part numbers were originally supplied by 7 suppliers. Today, 7 suppliers are listed as Active suppliers for this NSN. Of the active suppliers, there are no suppliers that are deemed design controlled or valid supply parts. ISO Group has several sources of supply for this NSN.
This part number has not been procured by the US Government in over 5 years.
This NSN is assigned to Item Name Code (INC) 17567. [AN AIR FILTERING DEVICE DESIGNED TO BE INSERTED IN THE FACEPIECE OF A MASK, CHEMICAL-BIOLOGICAL. IT IS DESIGNED TO REMOVE FROM THE AIR PASSING THROUGH IT TOXIC AND/OR IRRITATING CHEMICAL VAPORS, GASES AND PARTICULATE CONTAMINANTS (DUST, FUMES, MISTS, FOGS, AND SMOKES) INCLUDING BIOLOGICAL ORGANISMS LIKELY TO TO BE USED IN WARFARE. IT MAY FILTER INDUSTRIAL DUSTS, FUMES, MISTS, FOGS AND SMOKE, BUT IS NOT DESIGNED TO REMOVE INDUSTRIAL TYPE GASES OR VAPORS. SEE ALSO CANISTER, GAS MASK.].
This information was last updated on Aug 04, 2025.