National Stock Number
4420-00-376-7778
National Stock Number (NSN) 4420-00-376-7778, or NIIN 003767778, (core assembly,fluid heater,indus) was assigned January 1, 1963 in the Federal Logistics Information System (FLIS). This NIIN is Available for Manual Assignment. This NSN replaces 1 stock number, 4520005068605.
There are 2 manufacturer part numbers associated with this NSN. One 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) 11565. [AN ASSEMBLED UNIT WHICH MAY CONSIST OF TUBES, TUBE SHEETS, BAFFLES AND FINS, WHICH COMPRISE THE BASIC HEAT TRANSFER ELEMENT OF A HEATER, FLUID, INDUSTRIAL. EXCLUDES:HOT WATER CORES.]. 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 4420003767778 contains an unknown precious metal.
This information was last updated on Jul 01, 2025.