National Stock Number
6610-00-055-8580
National Stock Number (NSN) 6610-00-055-8580, or NIIN 000558580, (clutch,spring retur) was assigned January 1, 1963 in the Federal Logistics Information System (FLIS). NIIN 000558580 was cancelled on April 29, 2010, with a cancelled status of "Item is Cancelled - Inactive." There is no known replacement specified for this stock number. 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 2 suppliers. Today, 2 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.
This NSN is assigned to Item Name Code (INC) 77777. There is no data in the HMIRS and the NSN is in an FSC not generally suspected of containing hazardous materials. NSN 6610000558580 does not contain precious metals.
This information was last updated on Aug 01, 2025.