National Stock Number
5340-00-215-5531
National Stock Number (NSN) 5340-00-215-5531, or NIIN 002155531, (cup,compression) was assigned January 1, 1963 in the Federal Logistics Information System (FLIS). This NIIN is Available for Manual Assignment. This NSN replaces 1 stock number, 8030005680739.
There are 5 manufacturer part numbers associated with this NSN. 4 of those part number(s) are considered obsolete. The manufacturer part numbers were originally supplied by 5 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.
Based on a planned procurement review by the Primary Inventory Control Activity (PICA) on Sep 02, 2005, this NSN's acquisition method was noted as: Suitable for Competitive Acquisition. (Potential sources shall include dealers/distributors.) The Government physically does not have in its possession sufficient, accurate, or legible data to purchase this part from other than current source(s). (NOTE: This code is applicable only to parts under immediate buy requirements and only as long as the deficiency is under review for resolution and appropriate recoding.) Valid AMCs: 1, 2, 3, 4 and 5.
This NSN is assigned to Item Name Code (INC) 03435. [A NONMETALLIC CUP-SHAPED ITEM DESIGNED TO BE LOCATED WITHIN A CYLINDER, AND WHOSE CONTACT EDGE WITH THE CYLINDER WALLS IS USUALLY FEATHERED. THIS ITEM, BY MEANS OF EXTRUSION, MAKES CLOSE PHYSICAL CONTACT WITH THE CYLINDER WALLS IN ORDER TO PREVENT THE ESCAPE OF INTERNAL PRESSURE. THE ITEM MAY HAVE A CENTER HOLE AND/OR BOLT HOLES. EXCLUDES:CUP, HYDRAULIC BRAKE CYLINDER.]. This item does not have a nuclear hardened feature or any other critical feature such as tolerance, fit restriction or application. There is no information in the HMIRS; however, the NSN is in an FSC in Table II of Federal Standard 313 and an MSDS may be required by the user. The requirement for an MSDS is dependent on a hazard determination of the supplier or the intended end use of the product. NSN 5340002155531 contains an unknown precious metal.
This information was last updated on Aug 01, 2025.