National Stock Number
4940-01-197-5721
National Stock Number (NSN) 4940-01-197-5721, or NIIN 011975721, (enclosure,electromagnetic shielding) was assigned December 22, 1984 in the Federal Logistics Information System (FLIS). NIIN 011975721 was cancelled on May 8, 2001, with a cancelled status of "Item is Cancelled WITHOUT Replacement." 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.
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.]. This item does not have a critical feature such as tolerance, fit restrictions or application. Nuclear hardness properties have not been determined (not valid for input). There is no data in the HMIRS and the NSN is in an FSC not generally suspected of containing hazardous materials. NSN 4940011975721 does not contain precious metals.
This information was last updated on Aug 01, 2025.