National Stock Number
1660-00-403-8556
National Stock Number (NSN) 1660-00-403-8556, or NIIN 004038556, (tank,liquid oxygen converter) was assigned July 25, 1969 in the Federal Logistics Information System (FLIS). This NIIN is Available for Manual Assignment. This NSN does not replace any other NSNs.
There are 2 manufacturer part numbers associated with this NSN. One of those part number(s) are considered obsolete. The manufacturer part numbers were originally supplied by 2 suppliers. Today, 2 suppliers are listed as Active suppliers for this NSN. Of the active suppliers, only one supplier is deemed design controlled or valid supply parts. ISO Group has several sources of supply for 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) 61471. [A TANK CONSISTING OF AN INNER AND OUTER SHELL USING A VACUUM BETWEEN THE SHELLS TO PREVENT CONDUCTION OF HEAT. IT STORES AND MAINTAINS OXYGEN IN A LIQUID STATE. EXCLUDES:CYLINDER, COMPRESSED GAS.]. 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 1660004038556 does not contain precious metals.
This NSN is associated to Schedule B 8907900060: tanks. The Schedule B End Use is listed as commercial vessels, other. NAICS classification category 332420: metal tank (heavy gauge) manufacturing.
This information was last updated on Jul 01, 2025.