National Stock Number
4520-01-290-1040
National Stock Number (NSN) 4520-01-290-1040, or NIIN 012901040, (furnace,warm air) was assigned December 6, 1988 in the Federal Logistics Information System (FLIS). NIIN 012901040 was cancelled on May 2, 2003, with a cancelled status of "Item is Cancelled WITHOUT Replacement." There is no known replacement specified for this stock number. This NSN does not replace any other NSNs.
There are 2 manufacturer part numbers associated with this NSN. None of the associated part number(s) are considered obsolete. The manufacturer part numbers were originally supplied by 2 suppliers. Today, there are no suppliers 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.
There has been very little demand for this national stock number. The demand for this NSN originated from less than 5 countries.
This NSN is assigned to Item Name Code (INC) 09198. [A CENTRAL HEATING APPLIANCE CONSISTING OF A COMBUSTION CHAMBER AND SECONDARY HEAT TRANSFERRING SURFACES INCLOSED WITHIN A JACKET OR CASING, DESIGNED FOR BURNING VARIOUS TYPES OF FUEL. THE RESULTANT HEAT, BEING ABSORBED BY AIR CIRCULATED OVER THE HEATED SURFACES BY MEANS OF GRAVITY OR FORCED AIR CIRCULATION, MAY BE DISTRIBUTED TO VARIOUS ROOMS OF A BUILDING BY THE ATTACHMENT OF DUCTS AND/OR PIPES. SEE ALSO HEATER, SPACE.]. This item does not have a critical feature such as tolerance, fit restrictions or application. Nuclear hardness properties have not been determined (not valid for input). There is no data in the HMIRS and the NSN is in an FSC not generally suspected of containing hazardous materials. NSN 4520012901040 does not contain precious metals.
This information was last updated on Jul 01, 2025.