National Stock Number
4420-01-377-6673
National Stock Number (NSN) 4420-01-377-6673, or NIIN 013776673, (core assembly,fluid heater,indus) was assigned July 23, 1993 in the Federal Logistics Information System (FLIS). This NIIN is Available for Manual Assignment. 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, 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, with the most recent procurement date of Apr 15, 2019. 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: SPE8E819V1642, SPE8E814M0651. The total value of the awarded contracts has been US$ 46,807.53.
This NSN is somewhat common among different platforms, belonging to 8 different weapons systems.
There has been very little demand for this national stock number. The demand for this NSN originated from less than 5 countries. Based on a planned procurement review by the Primary Inventory Control Activity (PICA) on Nov 14, 2013, this NSN's acquisition method was noted as: Acquire, for the first time, directly from the actual manufacturer rather than the prime contractor who is not the actual manufacturer. The data needed to produce this item from additional sources is not physically available. Valid AMCs: 3, 4 and 5.
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 4420013776673 does not contain precious metals.
This information was last updated on Jul 01, 2025.