National Stock Number
4420-22-258-1986
National Stock Number (NSN) 4420-22-258-1986, or NIIN 222581986, (heater,fluid,industrial) has an unknown assigned date. 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 one supplier. Today, one supplier is 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 unique to one weapons system.
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 information was last updated on Jul 28, 2025.