National Stock Number
4240-20-000-0794
National Stock Number (NSN) 4240-20-000-0794, or NIIN 200000794, (filter,air,chemical-biological) has an unknown assigned date. 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, there are no suppliers that are 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) 32801. [AN ITEM DESIGNED TO PURIFY THE AIR AGAINST CHEMICAL-BIOLOGICAL CONTAMINANTS. IT CAN BE USED IN THE RESPIRATORY SYSTEM OF AIRCREW PERSONNEL OR WEARERS OF A CHEMICAL-BIOLOGICAL PROTECTIVE SUIT. AN EXTRA FILTER MAY BE ATTACHED TO THE HELMET OF THE PROTECTIVE SUIT OR TO THE PARACHUTE HARNESS TO BE USED DURING EMERGENCIES.].
This information was last updated on Aug 20, 2025.