National Stock Number
4520-99-158-2923
National Stock Number (NSN) 4520-99-158-2923, or NIIN 991582923, (radiator,heating) has an unknown assigned date. 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, with the most recent procurement date of May 01, 2012. There have been 2 contracts issued for this part number, with 2 awards given. There is minimal competition for this NSN. The US Government has awarded contracts to 2 different suppliers. The last contract numbers awarded were: SPM8E812M0433, SPM7M009M6872. The total value of the awarded contracts has been US$ 11,262.00.
This NSN is somewhat common among different platforms, belonging to 3 different weapons systems.
There has been a small amount of 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) 04839. [A HEAT TRANSFERRING UNIT DESIGNED TO TRANSFER HEAT TO SURROUNDING AIR BY RADIATION. THE UNIT IS EXPOSED DIRECTLY TO THE SPACE SERVED AND IT IS GENERALLY CONNECTED TO SOME TYPE OF HEAT GENERATING UNIT, SUCH AS A STEAM OR HOT WATER HEATING BOILER, BUT MAY HAVE AN INTEGRAL GAS OR ELECTRIC HEATING UNIT. EXCLUDES:HEATER, CONVECTION, STEAM-HOT WATER.].
This information was last updated on Oct 17, 2025.