National Stock Number
4940-00-555-0004
National Stock Number (NSN) 4940-00-555-0004, or NIIN 005550004, (enclosure,electromagnetic shielding) was assigned January 1, 1963 in the Federal Logistics Information System (FLIS). NIIN 005550004 was cancelled on January 22, 2004, with a cancelled status of "Item is Cancelled - USE." This NSN was replaced by NSN 4940005420002. This NSN does not replace any other NSNs.
There is only one manufacturer part number associated with this NSN. None of the associated part number(s) are considered obsolete. The manufacturer part numbers were originally supplied by one supplier. Today, there are no suppliers listed as an Active supplier for this NSN. Of the active suppliers, there are no suppliers that are deemed design controlled or valid supply parts.
This part number has not been procured by the US Government in over 5 years.
This NSN is assigned to Item Name Code (INC) 20361. [A PREFABRICATED AND/OR DEMOUNTABLE STRUCTURE DESIGNED TO ENCOMPASS ELECTRICAL APPARATUS AND PERSONNEL FOR THE PURPOSE OF SHIELDING AGAINST ELECTROMAGNETIC OR MECHANICAL INTERFERENCE. FOR ITEMS THAT DO NOT ENCOMPASS PERSONNEL, SEE SHIELD, TEST.]. There is no data in the HMIRS and the NSN is in an FSC not generally suspected of containing hazardous materials. NSN 4940005550004 does not contain precious metals.
This information was last updated on Aug 01, 2025.