National Stock Number
2805-00-040-1873
National Stock Number (NSN) 2805-00-040-1873, or NIIN 000401873, (flywheel,engine) was assigned January 1, 1963 in the Federal Logistics Information System (FLIS). This NIIN is Available for Manual Assignment. This NSN does not replace any other NSNs.
There are 2 manufacturer part numbers associated with this NSN. None of the associated part number(s) are considered obsolete. The manufacturer part numbers were originally supplied by one supplier. Today, one supplier is listed as an Active supplier 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.
This NSN is assigned to Item Name Code (INC) 60500. [A CIRCULAR METAL ITEM SPECIFICALLY DESIGNED TO BE ATTACHED TO THE ENGINE CRANKSHAFT. ITS PRIMARY FUNCTION IS TO COUNTERACT VARIABLE TORQUE AND REDUCE THE FLUCTUATIONS OF AN INTERNAL COMBUSTION ENGINE, DURING CHANGES OF SPEED. IT MAY HAVE A RING GEAR, COOLING FAN, PERMANENT MAGNETS, AND/OR THE LIKE. EXCLUDES ENGINE CRANKSHAFT DAMPERS.]. 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 2805000401873 contains an unknown precious metal.
This NSN is associated to Schedule B 8409918000: parts for spark-ignition internal combustion piston engines, 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.