National Stock Number
5905-00-491-2221
National Stock Number (NSN) 5905-00-491-2221, or NIIN 004912221, (resistor,fixed,composition) was assigned September 18, 1970 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 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.
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, 2006, 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) 00126. [A RESISTOR WHOSE OHMIC VALUE CANNOT BE ADJUSTED OR VARIED. THE RESISTANCE ELEMENT CONSISTS OF A MIXTURE OF CARBON, AN INSULATING MATERIAL, AND SUITABLE BINDERS, EITHER MOLDED TOGETHER OR APPLIED AS A THIN LAYER OF CONDUCTING MATERIAL ON AN INSULATED FORM. THE OPPOSITION TO THE FLOW OF CURRENT IS AN INHERENT PROPERTY OF THE MATERIALS USED AND IS MANIFEST BY THE HEAT DISSIPATION IN THE ITEM ITSELF. SEE ALSO ATTENUATOR,FIXED; RESISTOR,FIXED,FILM; AND RESISTOR,THERMAL. EXCLUDES:SUPPRESSOR,IGNITION INTERFERENCE.]. 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 5905004912221 does not contain precious metals.
This NSN is associated to Schedule B 8533290000: fixed resistors, for a power handling capacity exceeding 20 w, nesoi. The Schedule B End Use is listed as electric apparatus.
This information was last updated on Jul 01, 2025.