National Stock Number (NSN) 2815-00-397-3316, or NIIN 003973316, (piston,internal combustion engin) was assigned April 15, 1974 in the Federal Logistics Information System (FLIS). This NIIN is Available for Manual Assignment. This NSN does not replace any other NSNs.
There are 3 manufacturer part numbers associated with this NSN. 3 of those part number(s) are considered obsolete. The manufacturer part numbers were originally supplied by 5 suppliers. Today, 4 suppliers are listed as Active suppliers for this NSN. Of the active suppliers, only one supplier is deemed design controlled or valid supply parts. ISO Group has built a very strong supply chain for this NSN. We have direct relationships with 40 sources of supply.
This part number has been procured by the US Government within the last year, but shows no recent (last 90 days) procurement activity. There have been 25 contracts issued for this part number, with 31 awards given. There is moderate competition for this NSN. The US Government has awarded contracts to 6 different suppliers. The last contract numbers awarded were: SPE7L525V1152, SPE7L524P0709, SPE7L524P0641, SPE7L524P0391, SPE7L724P0342. The total value of the awarded contracts has been US$ 3,215,296.81.
This NSN is somewhat common among different platforms, belonging to 3 different weapons systems.
This national stock number is in high demand. Globally, demand for this NSN has originated from 19 countries. The 24 month forecast from the US Government for this part number has low volatility, with an estimated forecasted value of US$ 200,514. Based on a planned procurement review by the Primary Inventory Control Activity (PICA) on Oct 12, 2020, this NSN's acquisition method was noted as: Acquire directly from the actual manufacturer, whether or not the prime contractor is the actual manufacturer. Acquisition of this part is restricted to source(s) specified on "Source Control", "Altered Item" or "Selected Item" drawings/documents. Valid AMCs: 1, 2, 3, 4 and 5.
This NSN is assigned to Item Name Code (INC) 16509. 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 2815003973316 contains an unknown precious metal.
This NSN is associated to Schedule B 8409998000: parts for compression-ignition internal combustion piston engines (diesel), 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.