National Stock Number
6540-01-315-8438
National Stock Number (NSN) 6540-01-315-8438, or NIIN 013158438, (lens blank,ophthalmic,sphere,semifinished) has an unknown assigned date. NIIN 013158438 was cancelled on September 2, 1990, with a cancelled status of "Item is Cancelled as Duplicate." This NSN was replaced by NSN 6540009264775. 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) 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.]. There is no data in the HMIRS and the NSN is in an FSC not generally suspected of containing hazardous materials. NSN 6540013158438 does not contain precious metals.
This information was last updated on Jul 01, 2025.