National Stock Number
3455-00-517-8221
National Stock Number (NSN) 3455-00-517-8221, or NIIN 005178221, (shim seat,insert,cutting tool) was assigned June 25, 1971 in the Federal Logistics Information System (FLIS). This NIIN is Available for Manual Assignment. This NSN does not replace any other NSNs.
There is only one manufacturer part number associated with this NSN. One of those part number(s) are considered obsolete. The manufacturer part numbers were originally supplied by 2 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 Jul 02, 2006, 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 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) 66721. [A DEVICE THAT SEATS AND SUPPORTS THE INSERT, CUTTING TOOL, BETWEEN THE INSERT AND THE HOLDER, CUTTING TOOL; BAR, BORING TOOL OR CUTTER MILLING. IT PROTECTS THE HOLDING DEVICE AND STABILIZES THE CUTTING EDGE. IT MAY BE THE SAME SHAPE AS THE INSERT OR HAVE ACCOMMODATION FOR ATTACHNENT AND ALIGNMENT WITH THE HOLDING DEVICE. EXCLUDES SHIMS NOT USED IN MACHINING OPERATIONS ND SHIM USED TO ALIGN THE HEIGHT OF CUTTER BITS.]. 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 3455005178221 contains an unknown precious metal.
This NSN is associated to Schedule B 8209000030: plates, sticks, tips and the like for tools, unmounted, of sintered metal carbides. The Schedule B End Use is listed as photo, service industry machinery. NAICS classification category 333515: cutting tool and machine tool accessory manufacturing.
This information was last updated on Aug 01, 2025.