National Stock Number
6650-01-249-9241
National Stock Number (NSN) 6650-01-249-9241, or NIIN 012499241, (prism,optical instrument) was assigned February 20, 1987 in the Federal Logistics Information System (FLIS). NIIN 012499241 was cancelled on August 2, 2004, 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 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, one supplier is 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) 21879. [A TRANSPARENT ITEM WITH AT LEAST TWO POLISHED PLANE SURFACES INCLINED TOWARD EACH OTHER, DESIGNED FOR USE IN OPTICAL INSTRUMENTS TO REFLECT AND/OR REFRACT A BEAM OF LIGHT. IT MAY HAVE ONE OR MORE MIRRORED SURFACES FOR GREATER REFLECTION. INCLUDES OPTICAL WEDGES USED TO DIVERT PATHS OF LIGHT BY REFRACTION, BUT TO A LESSER DEGREE. SEE ALSO BEAM SPLITTER, OPTICAL INSTRUMENT.]. This item does not have a critical feature such as tolerance, fit restrictions or application. Nuclear hardness properties have not been determined (not valid for input). There is no data in the HMIRS and the NSN is in an FSC not generally suspected of containing hazardous materials. NSN 6650012499241 contains silver.
This information was last updated on Aug 01, 2025.