National Stock Number
4420-00-368-3994
National Stock Number (NSN) 4420-00-368-3994, or NIIN 003683994, (heater,fluid,industrial) 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 4 manufacturer part numbers associated with this NSN. 3 of those part number(s) are considered obsolete. The manufacturer part numbers were originally supplied by one supplier. 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.
This NSN is assigned to Item Name Code (INC) 04042. [AN APPARATUS DESIGNED TO RAISE THE TEMPERATURE OF A FLUID BY BRINGING IT INTO PROXIMITY WITH ANOTHER FLUID OF HIGHER TEMPERATURE SO THAT HEAT TRANSFER IS EFFECTED BY DIRECT CONTACT OR BY PASSING THOSE FLUIDS THROUGH PIPE(S), TUBE(S), OR COILS WHICH ARE SUBMERGED IN A TANK OF HOT WATER OR STEAM WHICH IS SUPPLIED FROM AN OUTSIDE SOURCE. THE FLUID IS NEVER STORED IN THIS TANK. EXCLUDES:AIR CONDITIONING, ELECTRIC FLUID HEATERS, AND REFRIGERATION EQUIPMENT.]. 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 4420003683994 does not contain precious metals.
This information was last updated on Aug 01, 2025.