National Stock Number
6540-00-142-8604
National Stock Number (NSN) 6540-00-142-8604, or NIIN 001428604, (lens blank,ophthalmic,sphere,semifinished) was assigned July 26, 1968 in the Federal Logistics Information System (FLIS). NIIN 001428604 was cancelled on June 2, 2014, 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.
Based on a planned procurement review by the Primary Inventory Control Activity (PICA) on Dec 01, 2020, this NSN's acquisition method was noted as: Acquire directly from the actual manufacturer, whether or not the prime contractor is the actual manufacturer. The Government physically does not have in its possession sufficient, accurate, or legible data to purchase this part from other than current source(s). (NOTE: This code is applicable only to parts under immediate buy requirements and only as long as the deficiency is under review for resolution and appropriate recoding.) Valid AMCs: 1, 2, 3, 4 and 5.
This NSN is assigned to Item Name Code (INC) 30303. [A TRANSPARENT MOLDED OPTICAL ELEMENT HAVING EQUAL SPHERICAL DIOPTER CURVATURES, AN APPROXIMATE SIZE AND SHAPE, AND HAS BEEN GROUND AND POLISHED TO A FINISHED CURVATURE ON ONE SURFACE ONLY.]. 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 6540001428604 does not contain precious metals.
This information was last updated on Aug 01, 2025.