National Stock Number
5120-01-621-1940
National Stock Number (NSN) 5120-01-621-1940, or NIIN 016211940, (extension,socket wrench) was assigned August 27, 2013 in the Federal Logistics Information System (FLIS). NIIN 016211940 was cancelled on December 2, 2013, with a cancelled status of "Item is Cancelled as Duplicate." This NSN was replaced by NSN 5120013999618. 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, one supplier is listed as an Active supplier for this NSN. Of the active suppliers, only one supplier is 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) 17018. [AN ATTACHMENT FOR EXTENDING THE DRIVE LENGTH OF SOCKET WRENCHES OR HANDLES. THE BODY OF THE ITEM MAY BE EITHER A COIL SPRING OR A SOLID BAR. THE ITEMS PERMIT THE CONNECTION OF ENDS THAT ARE DESIGNED FOR DIRECT MATING TO EACH OTHER. SEE ALSO ADAPTER, SOCKET WRENCH; UNIVERSAL JOINT, SOCKET WRENCH ATTACHMENT; AND ADAPTER, SOCKET, CROWFOOT SOCKET WRENCH HEAD.]. There is no data in the HMIRS and the NSN is in an FSC not generally suspected of containing hazardous materials. NSN 5120016211940 does not contain precious metals.
This information was last updated on Jul 01, 2025.