National Stock Number
4240-01-339-7596
National Stock Number (NSN) 4240-01-339-7596, or NIIN 013397596, (filter,air,chemical-biological) was assigned May 30, 1991 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.
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 May 31, 1991, this NSN's acquisition method was noted as: Not established. Not established.
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 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 4240013397596 contains an unknown precious metal.
This information was last updated on Aug 01, 2025.