National Stock Number
4820-01-257-6600
National Stock Number (NSN) 4820-01-257-6600, or NIIN 012576600, (bonnet assembly) was assigned June 23, 1987 in the Federal Logistics Information System (FLIS). NIIN 012576600 was cancelled on May 1, 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 is only one manufacturer part number 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, there are no suppliers listed as an Active supplier for this NSN. Of the active suppliers, there are no suppliers that 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 4820012576600 contains an unknown precious metal.
This information was last updated on Aug 01, 2025.