National Stock Number
4220-01-126-9206
National Stock Number (NSN) 4220-01-126-9206, or NIIN 011269206, (diffuser,air supply) was assigned February 19, 1982 in the Federal Logistics Information System (FLIS). This NIIN is Available for Manual Assignment. This NSN does not replace any other NSNs.
There are no manufacturer part numbers associated to this NSN.
This part number has not been procured by the US Government in over 5 years.
This NSN is somewhat common among different platforms, belonging to 2 different weapons systems.
Based on a planned procurement review by the Primary Inventory Control Activity (PICA) on May 02, 2006, this NSN's acquisition method was noted as: Suitable for Competitive Acquisition. (Potential sources shall include dealers/distributors.) The Government has unlimited rights to the technical data, and the data package is complete. Valid AMCs: 1 and 2.
This NSN is assigned to Item Name Code (INC) 39163. [A CORROSION RESISTANT METALLIC/NONMETALLIC ITEM FABRICATED FROM A SINGLE INTERNALLY CORED CASTING. IT IS SPECIFICALLY DESIGNED TO REDUCE BREATHING GAS VELOCITY WHILE INCREASING STATIC PRESSURE TO EFFECTIVELY DEFOG THE VIEWPOINT OF A HELMET, DEEP-SEA DIVER'S AND HELMET, DEEP-SEA DIVER'S HELIUM-OXYGEN]. This item does not have a nuclear hardened feature or any other critical feature such as tolerance, fit restriction or application. There is no data in the HMIRS and the NSN is in an FSC not generally suspected of containing hazardous materials. NSN 4220011269206 does not contain precious metals.
This information was last updated on Aug 01, 2025.