National Stock Number
4520-00-101-3965
National Stock Number (NSN) 4520-00-101-3965, or NIIN 001013965, (heater,water,electric) was assigned May 27, 1968 in the Federal Logistics Information System (FLIS). This NIIN is Available for Manual Assignment. This NSN replaces 1 stock number, 4520000334285.
There are 6 manufacturer part numbers associated with this NSN. 4 of those part number(s) are considered obsolete. The manufacturer part numbers were originally supplied by 2 suppliers. Today, 2 suppliers are listed as Active suppliers for this NSN. Of the active suppliers, only one supplier is deemed design controlled or valid supply parts. ISO Group has several sources of supply for this NSN.
This part number has not been procured by the US Government in over 5 years.
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 Jan 30, 2014, this NSN's acquisition method was noted as: Acquire directly from the actual manufacturer, whether or not the prime contractor is the actual manufacturer. The Government physically does not have in its possession sufficient, accurate, or legible data to purchase this part from other than current source(s). (NOTE: This code is applicable only to parts under immediate buy requirements and only as long as the deficiency is under review for resolution and appropriate recoding.) Valid AMCs: 1, 2, 3, 4 and 5.
This NSN is assigned to Item Name Code (INC) 07180. [A UNIT SPECIFICALLY DESIGNED FOR HEATING WATER BY A DIRECT FIRED METHOD, UTILIZING ELECTRIC HEATING ELEMENT(S).]. 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 4520001013965 does not contain precious metals.
This NSN is associated to Schedule B 8516100040: electric storage water heaters. The Schedule B End Use is listed as household appliances. NAICS classification category 335228: other major household appliance manufacturing.
This information was last updated on Aug 01, 2025.