National Stock Number
4520-00-103-1010
National Stock Number (NSN) 4520-00-103-1010, or NIIN 001031010, (humidifier,warm air heating syst) was assigned June 12, 1968 in the Federal Logistics Information System (FLIS). This NIIN is Available for Manual Assignment. This NSN does not replace any other NSNs.
There are 3 manufacturer part numbers associated with this NSN. 2 of those part number(s) are considered obsolete. The manufacturer part numbers were originally supplied by 3 suppliers. Today, 2 suppliers are listed as Active suppliers 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 Jan 08, 1998, this NSN's acquisition method was noted as: Suitable for competitive acquisition for the first time. (Potential sources shall include dealers/distributors.) The Government physically does not have in its possession sufficient, accurate, or legible data to purchase this part from other than current source(s). (NOTE: This code is applicable only to parts under immediate buy requirements and only as long as the deficiency is under review for resolution and appropriate recoding.) Valid AMCs: 1, 2, 3, 4 and 5.
This NSN is assigned to Item Name Code (INC) 15584. [A DEVICE WHICH, WHEN INSTALLED IN CONJUNCTION WITH A WARM AIR HEATING SYSTEM, INJECTS OR RELEASES VAPOR FOR THE PURPOSE OF INCREASING THE RELATIVE HUMIDITY IN A ROOM OR BUILDING. EXCLUDES:SELF-CONTAINED AIR HUMIDIFYING UNITS.]. 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 4520001031010 does not contain precious metals.
This information was last updated on Jun 01, 2025.