National Stock Number
2840-00-439-2956
National Stock Number (NSN) 2840-00-439-2956, or NIIN 004392956, (truss ring assembly,front) was assigned January 1, 1963 in the Federal Logistics Information System (FLIS). NIIN 004392956 was cancelled on August 2, 2003, with a cancelled status of "Item is Cancelled - USE." This NSN was replaced by NSN 3835014086661. This NSN does not replace any other NSNs.
There is only one manufacturer part number associated with this NSN. One of those part number(s) are considered obsolete. The manufacturer part numbers were originally supplied by 3 suppliers. Today, 3 suppliers are listed as Active suppliers for this NSN. Of the active suppliers, 2 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) 77777. This item does not have a critical feature such as tolerance, fit restrictions or application. Nuclear hardness properties have not been determined (not valid for input). There is no data in the HMIRS and the NSN is in an FSC not generally suspected of containing hazardous materials. NSN 2840004392956 does not contain precious metals.
This information was last updated on Jul 01, 2025.