National Stock Number
4520-01-036-7649
National Stock Number (NSN) 4520-01-036-7649, or NIIN 010367649, (heater,water,gas) was assigned March 5, 1977 in the Federal Logistics Information System (FLIS). This NSN does not replace any other NSNs.
There is only one manufacturer part number 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.
Based on a planned procurement review by the Primary Inventory Control Activity (PICA) on Apr 02, 1991, this NSN's acquisition method was noted as: Not established. Not established.
This NSN is assigned to Item Name Code (INC) 07181. [A UNIT SPECIFICALLY DESIGNED FOR HEATING WATER BY A DIRECT FIRED METHOD, UTILIZING A GAS FUEL BURNED IN A COMBUSTION CHAMBER INCLOSED WITHIN ITSELF. MAY BE INCORPORATED WITH A TANK AS AN INTEGRAL OR AS A SEPARATE UNIT FOR STORAGE OF THE WATER SO HEATED.]. 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 4520010367649 contains an unknown precious metal.
This information was last updated on Aug 01, 2025.