National Stock Number
4140-00-398-8544
National Stock Number (NSN) 4140-00-398-8544, or NIIN 003988544, (housing,centrifugal fan) was assigned January 1, 1963 in the Federal Logistics Information System (FLIS). This NIIN is Available for Manual Assignment. This NSN does not replace any other NSNs.
There are 33 manufacturer part numbers associated with this NSN. 32 of those part number(s) are considered obsolete. The manufacturer part numbers were originally supplied by 2 suppliers. 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.
This NSN is unique to one weapons system.
Based on a planned procurement review by the Primary Inventory Control Activity (PICA) on Sep 02, 2006, this NSN's acquisition method was noted as: Suitable for competitive acquisition for the first time. (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) 61534. [THE OUTER CASING OF A CENTRIFUGAL FAN DESIGNED TO INCLOSE AN IMPELLER. IT IS USUALLY OF ONE PIECE CONSTRUCTION CONTAINING INLET(S) AND OUTLETS.]. 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 4140003988544 contains an unknown precious metal.
This NSN is associated to Schedule B 8414901040: parts of fans (including blowers) and ventilating or recycling hoods for permanent installation (of subheading 8414.51.00). The Schedule B End Use is listed as household appliances.
This information was last updated on Aug 01, 2025.