National Stock Number
6540-01-156-3442
National Stock Number (NSN) 6540-01-156-3442, or NIIN 011563442, (lens bl oph sphere) was assigned June 20, 1983 in the Federal Logistics Information System (FLIS). NIIN 011563442 was cancelled on April 30, 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. 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 6540011563442 does not contain precious metals.
This information was last updated on Jul 01, 2025.