National Stock Number (NSN) 2815-01-318-8523, or NIIN 013188523, (cylinder sleeve and piston assem) was assigned April 26, 1990 in the Federal Logistics Information System (FLIS). This NIIN is Available for Manual Assignment. This NSN replaces 1 stock number, 2815003534816.
There are 9 manufacturer part numbers associated with this NSN. 7 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, 3 suppliers are 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 27 contracts issued for this part number, with 30 awards given. There is moderate competition for this NSN. The US Government has awarded contracts to 7 different suppliers. The last contract numbers awarded were: SPE7M025V0114, SPE7L117V2369, SPE7L116V5466, SPE7L515V2270, SPE7L515V2270. The total value of the awarded contracts has been US$ 129,818.37.
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 Jun 02, 2006, this NSN's acquisition method was noted as: Suitable for Competitive Acquisition. (Potential sources shall include dealers/distributors.) This part requires engineering source approval by the design control activity in order to maintain the quality of the part. An alternate source must qualify in accordance with the design control activity's procedures, as approved by the cognizant Government engineering activity. Valid AMCs: 1, 2, 3, 4 and 5.
This NSN is assigned to Item Name Code (INC) 60372. [A CYLINDER SLEEVE AND PISTON (1), (AS MODIFIED) WITH ONE OR MORE OF THE FOLLOWING: PISTON PIN, PISTON RING, GASKETS AND/OR SEALS, GROUPED AS A SINGLE UNIT AND INTENDED FOR ONE TIME REPLACEMENT IN THE REPAIR OF ENGINES, COMPRESSORS, PUMPS, AND THE LIKE.]. This item does not have a nuclear hardened feature but does have other critical feature(s) 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 2815013188523 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 Jul 01, 2025.