DLMS™ Summary National Stock Number 1010-01-257-9958 National Stock Number (NSN) 1010-01-257-9958, or NIIN 012579958, (block,vision,frameless) has an unknown assigned date. NIIN 012579958 was cancelled on May 2, 1996, with a cancelled status of "Item is Cancelled - USE." This NSN was replaced by NSN 2510013816046. 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. There is no data in the HMIRS and the NSN is in an FSC not generally suspected of containing hazardous materials. NSN 1010012579958 does not contain precious metals. This information was last updated on Dec 01, 2014.