National Stock Number
5840-01-047-7459
National Stock Number (NSN) 5985-01-047-7459, or NIIN 010477459, (spark gap) was assigned September 12, 1977 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 5 suppliers. Today, 5 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 assigned to Item Name Code (INC) 00171. [AN ITEM DESIGNED TO ACT AS A SWITCHING OR TRIGGERING DEVICE BY MEANS OF A DISRUPTIVE DISCHARGE OF ELECTRICITY (A SPARK) BETWEEN THE ELECTRODES. THE INSULATION (USUALLY AIR) BETWEEN THE ELECTRODES IS SELF-RESTORING AFTER PASSAGE OF THE SPARK. FOR SPARK GAPS USED AS A PROTECTIVE DEVICE, SEE ARRESTER, ELECTRICAL SURGE. FOR ITEMS WITH ADDITIONAL CIRCUITRY WHICH PERFORM COMPLETE MODULATION FUNCTIONS, SEE MODULATOR, RADAR.]. This item does not have a nuclear hardened feature or any other critical feature such as tolerance, fit restriction or application. There is no information in the HMIRS; however, the NSN is in an FSC in Table II of Federal Standard 313 and an MSDS may be required by the user. The requirement for an MSDS is dependent on a hazard determination of the supplier or the intended end use of the product. NSN 5985010477459 contains an unknown precious metal.
This NSN is associated to Schedule B 8409918000: parts for spark-ignition internal combustion piston engines, nesoi. The Schedule B End Use is listed as industrial engines. NAICS classification category 333618: other engine equipment manufacturing.
This information was last updated on Aug 01, 2025.