National Stock Number
2520-00-821-0531
National Stock Number (NSN) 2520-00-821-0531, or NIIN 008210531, (disk,clutch,vehicular) was assigned August 9, 1967 in the Federal Logistics Information System (FLIS). This NSN replaces 1 stock number, 2520009329706.
There are 6 manufacturer part numbers associated with this NSN. 5 of those part number(s) are considered obsolete. The manufacturer part numbers were originally supplied by 3 suppliers. Today, 2 suppliers are listed as Active suppliers for this NSN. Of the active suppliers, only one supplier is 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 Apr 25, 2008, 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 annual buy value of this part falls below the screening threshold of $10,000 but it has been screened for known source(s). (NOTE: This code shall not be used when screening parts entering the inventory. It shall not be assigned in preference to or supersede any other AMSC.) Valid AMCs: 1, 2, 3, 4 and 5.
This NSN is assigned to Item Name Code (INC) 52060. [A SOLID CIRCULAR DISK OF WIRE-WOVEN LINING MATERIAL OR CERAMIC AND METAL SUBSTANCE AND THE LIKE, MOLDED TO ONE OR BOTH SIDES AND FASTENED DIRECTLY OR INDIRECTLY TO THE CENTER SPLINE OR HUB, WHICH RECEIVES AND TRANSMITS MOTION OR POWER BY ENGAGEMENT WITH THE PRESSURE PLATE ASSEMBLY AND THE FLYWHEEL OR THE LIKE. INCLUDES DRY OR WET TYPE DISK, AND MAY INCLUDE DAMPER SPRINGS. THIS ITEM IS DESIGNED TO BE USED ON TANKS, AUTOMOBILES, CONSTRUCTION EQUIPMENT, AND THE LIKE IN CONJUNCTION WITH A CLUTCH ASSEMBLY, FRICTION.]. 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 2520008210531 contains an unknown precious metal.
This information was last updated on Aug 01, 2025.