National Stock Number
2990-01-477-4220
National Stock Number (NSN) 2990-01-477-4220, or NIIN 014774220, (radiator,heater,coolant,engine) was assigned August 8, 2000 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. One of those part number(s) are considered obsolete. The manufacturer part numbers were originally supplied by 2 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.
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) 46156. [A PREDOMINANTLY METAL ITEM WHICH CAN CONSIST OF TWO INTERLOCKING CYLINDRICAL CASES. THE INNER CYLINDER ACCOMMODATES THE COMBUSTION, CHAMBER HEATER, COOLANT, ENGINE AND CAN BE EQUIPPED WITH RIBS TO ENHANCE THERMAL CONDUCTIVITY. THE HEAT RADIATING FROM THE COMBUSTION CHAMBER IS TRANSMITTED VIA THE WALL AND THE RIBS TO THE COOLANT FLOWING IN THE SPACE BETWEEN THE INNER AND OUTER CYLINDER. CONNECTORS FOR HOSES, TUBES AND ATTACHMENTS CAN BE INCLUDED. EXCLUDES:RADIATOR, VEHICULAR COMPARTMENT HEATER.]. 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 2990014774220 does not contain precious metals.
This information was last updated on Jul 01, 2025.