National Stock Number
2920-00-477-8287
National Stock Number (NSN) 2920-00-477-8287, or NIIN 004778287, (suppressor,ignition interference) was assigned May 11, 1970 in the Federal Logistics Information System (FLIS). This NSN does not replace any other NSNs.
There are 2 manufacturer part numbers associated with this NSN. 2 of those part number(s) are considered obsolete. The manufacturer part numbers were originally supplied by 3 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 Sep 02, 2005, this NSN's acquisition method was noted as: Not established. Not established.
This NSN is assigned to Item Name Code (INC) 17170. [AN INSULATED CYLINDRICAL BODY, EITHER STRAIGHT OR ANGULAR, CONTAINING A FIXED RESISTANCE ELEMENT, AND USUALLY WITH QUICK-DISCONNECT TYPE TERMINALS, SPECIFICALLY CONSTRUCTED SO THAT WHEN CONNECTED IN A HIGH TENSION ELECTRICAL IGNITION SYSTEM IT WILL REDUCE INTERFERENCE RESULTING FROM ARCING OF SPARK PLUGS, AND SIMILAR DEVICES. EXCLUDES:RESISTOR (AS MODIFIED) AND SUPPRESSOR, PARASITIC. SEE ALSO FILTER, RADIO FREQUENCY INTERFERENCE.]. There is no data in the HMIRS and the NSN is in an FSC not generally suspected of containing hazardous materials. NSN 2920004778287 contains an unknown precious metal.
This information was last updated on Aug 01, 2025.