National Stock Number
4520-01-318-0318
National Stock Number (NSN) 4520-01-318-0318, or NIIN 013180318, (spark arrestor) was assigned April 11, 1990 in the Federal Logistics Information System (FLIS). NIIN 013180318 was cancelled on September 2, 2001, with a cancelled status of "Item is Cancelled as Duplicate." This NSN was replaced by NSN 4520011010966. This NSN does not replace any other NSNs.
There are no manufacturer part numbers associated to this NSN. ISO Group has several sources of supply for this NSN.
This part number has not been procured by the US Government in over 5 years.
This NSN is assigned to Item Name Code (INC) 77777. 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 4520013180318 does not contain precious metals.
This information was last updated on Aug 01, 2025.