National Stock Number
6540-00-655-8669
National Stock Number (NSN) 6540-00-655-8669, or NIIN 006558669, (lap,ophthalmic,cylindrical) was assigned January 1, 1963 in the Federal Logistics Information System (FLIS). NIIN 006558669 was cancelled on December 2, 2011, 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) 19985. [A TOOL WITH A KNOWN SURFACE DIOPTER CURVATURE USED IN THE GRINDING OR POLISHING OF LENS BLANKS TO A PRESCRIBED SURFACE HAVING UNEQUAL RADII OF CURVATURE.]. 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 6540006558669 does not contain precious metals.
This information was last updated on Jul 01, 2025.