National Stock Number
2920-00-555-5981
National Stock Number (NSN) 2920-00-555-5981, or NIIN 005555981, (spark plug) was assigned January 1, 1963 in the Federal Logistics Information System (FLIS). This NIIN is Available for Manual Assignment. This NSN replaces 9 stock numbers. Five of the National Stock Numbers that it replaces are: 2920002943707, 2920004555413, 2920005408351, 2920005691780, 2920004792692.
There are 11 manufacturer part numbers associated with this NSN. 7 of those part number(s) are considered obsolete. The manufacturer part numbers were originally supplied by 12 suppliers. Today, 8 suppliers are listed as Active suppliers for this NSN. Of the active suppliers, 3 suppliers are deemed design controlled or valid supply parts.
This part number has not been procured by the US Government in over 5 years.
This NSN is somewhat common among different platforms, belonging to 7 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 Jan 01, 2021, this NSN's acquisition method was noted as: Suitable for Competitive Acquisition. (Potential sources shall include dealers/distributors.) The data or the rights to use the data needed to purchase this part from additional sources are not owned by the Government and it has been determined that it is uneconomical to purchase them. Valid AMCs: 1, 2, 3, 4 and 5.
This NSN is assigned to Item Name Code (INC) 00294. [AN ITEM CONTAINING TWO OR MORE ELECTRODES ACROSS WHICH AN ELECTRIC SPARK IS DISCHARGED TO IGNITE A FUEL AND AIR MIXTURE, PRIMARILY IN INTERNAL COMBUSTION ENGINES. EXCLUDES:GLOW PLUG; ELECTRODE.]. 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 2920005555981 contains an unknown precious metal.
This NSN is associated to Schedule B 8511100000: spark plugs for internal combustion engines. The Schedule B End Use is listed as engines and engine parts (carburetors, pistons, rings, and valves.
This information was last updated on Aug 01, 2025.