National Stock Number
4520-00-540-0557
National Stock Number (NSN) 4520-00-540-0557, or NIIN 005400557, (heater,space) was assigned January 1, 1963 in the Federal Logistics Information System (FLIS). This NIIN is Available for Manual Assignment. This NSN replaces 16 stock numbers. Five of the National Stock Numbers that it replaces are: 4520001166836, 4520001411120, 4520009304990, 4520002436097, 4520010272645.
There are 5 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 2 suppliers. 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.
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 Sep 02, 2006, this NSN's acquisition method was noted as: Suitable for Competitive Acquisition. (Potential sources shall include dealers/distributors.) The Government has unlimited rights to the technical data, and the data package is complete. Valid AMCs: 1 and 2.
This NSN is assigned to Item Name Code (INC) 03228. [A DEVICE DESIGNED TO BURN VARIOUS TYPES OF FUEL WITHIN AN INCLOSURE WHICH PROTECTS AND CONFINES THE FIRE. IT IS USED FOR THE PURPOSE OF RAISING THE TEMPERATURE OF THE AIR IN ITS IMMEDIATE VICINITY. THE INCLOSURE MAY BE VENTED. EXCLUDES:HEATER,DUCT TYPE,PORTABLE; HEATER,SPACE,ELECTRIC.]. 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 4520005400557 does not contain precious metals.
This NSN is associated to Schedule B 7321810000: nonelectric domestic appliances nesoi, iron or steel, gas fuel or both gas and other fuels. The Schedule B End Use is listed as household appliances. NAICS classification category 333414: heating equipment (except warm air furnaces) manufacturing.
This information was last updated on Aug 01, 2025.