National Stock Number
2815-01-179-3109
National Stock Number (NSN) 2815-01-179-3109, or NIIN 011793109, (cylinder sleeve) was assigned May 16, 1984 in the Federal Logistics Information System (FLIS). This NIIN is Available for Manual Assignment. This NSN replaces 3 stock numbers: 2815015648995, 2815013245691, 2815011033724.
There are 7 manufacturer part numbers associated with this NSN. 7 of those part number(s) are considered obsolete. The manufacturer part numbers were originally supplied by 4 suppliers. Today, 3 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 several sources of supply for this NSN.
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 26 contracts issued for this part number, with 42 awards given. There is moderate competition for this NSN. The US Government has awarded contracts to 9 different suppliers. The last contract numbers awarded were: SPE7LX25FAZN7, SPE7LX25FAYX1, SPE7LX25FAYX1, SPE7LX25FAMK2, SPE7LX25FAGG9. The total value of the awarded contracts has been US$ 186,226.99.
This NSN is fairly common among different weapons systems, belonging to 12 different platforms.
There has been a small amount of demand for this national stock number. The demand for this NSN originated from less than 5 countries. Based on a planned procurement review by the Primary Inventory Control Activity (PICA) on Sep 06, 2013, this NSN's acquisition method was noted as: Acquire directly from the actual manufacturer, whether or not the prime contractor is the actual manufacturer. The data needed to produce this item from additional sources is not physically available. Valid AMCs: 3, 4 and 5.
This NSN is assigned to Item Name Code (INC) 16756. [A TUBULAR METAL ITEM DESIGNED PRIMARILY AS A REPLACEABLE WEAR SURFACE WITHIN THE CYLINDER BORE OF A PISTON TYPE INTERNAL COMBUSTION ENGINE, COMPRESSOR, OR RECIPROCATING PUMP.]. 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 2815011793109 does not contain precious metals.
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.