DLMS™ Summary National Stock Number 1020-00-143-1991 National Stock Number (NSN) 1020-00-143-1991, or NIIN 001431991, (no item name available) has an unknown assigned date. NIIN 001431991 was cancelled on January 1, 1963, with a cancelled status of "Item is Cancelled - Inactive." 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. There is no data in the HMIRS and the NSN is in an FSC not generally suspected of containing hazardous materials. NSN 1020001431991 does not contain precious metals. This information was last updated on Jan 20, 2017.