National Stock Number
5855-01-393-5023
National Stock Number (NSN) 5855-01-393-5023, or NIIN 013935023, (spacer,optical element) was assigned July 21, 1994 in the Federal Logistics Information System (FLIS). NIIN 013935023 was cancelled on January 14, 2005, 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 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, 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) 22261. [A TUBULAR SHAPED ITEM DESIGNED TO MAINTAIN A PREDETERMINED DISTANCE BETWEEN OPTICAL ELEMENTS, SUCH AS LENSES, RETICLES, AND THE LIKE. THE BORE MAY BE STRAIGHT, TAPERED OR COUNTERBORED, AND MAY HAVE ANNULAR SERRATIONS TO CONVERGE OR DIVERGE LIGHT RAYS. THE SURFACES, WHICH MATE WITH THE OPTICS, ARE USUALLY CHAMFERED, CONCAVE, AND/OR HAVE A SPECIFIED FINISH DESIGNATION IN THE RANGE OF 1 TO 125 MICROINCHES ARITHMETICAL AVERAGE (AA). SEE ALSO SPACER, SLEEVE AND CELL, OPTICAL ELEMENT.]. 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 5855013935023 does not contain precious metals.
This information was last updated on Jul 01, 2025.