National Stock Number
2990-01-521-9904
National Stock Number (NSN) 2990-01-521-9904, or NIIN 015219904, (adapter,flywheel housing) was assigned July 14, 2004 in the Federal Logistics Information System (FLIS). NIIN 015219904 was cancelled on April 2, 2005, with a cancelled status of "Item is Cancelled WITHOUT Replacement." There is no known replacement specified for this stock number. This NSN does not replace any other NSNs.
There are no manufacturer part numbers associated to this NSN.
This part number has not been procured by the US Government in over 5 years.
This NSN is assigned to Item Name Code (INC) 37981. [A CIRCULAR METALLIC ADAPTER WITH BOLT HOLES DESIGNED TO PROVIDE ACCOMMODATIONS FOR ADAPTING POWER DRIVEN DEVICES TO THE HOUSING OF A FLYWHEEL, ENGINE.]. 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 2990015219904 does not contain precious metals.
This information was last updated on Jul 01, 2025.