National Stock Number
5120-01-663-1759
National Stock Number (NSN) 5120-01-663-1759, or NIIN 016631759, (extension,socket wrench) was assigned April 28, 2017 in the Federal Logistics Information System (FLIS). This NIIN is Available for Manual Assignment. 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.]. 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 5120016631759 does not contain precious metals.
This NSN is associated to Schedule B 8204200000: socket wrenches with or without handles, drives and extensions, parts, base metal. The Schedule B End Use is listed as photo, service industry machinery.
This information was last updated on Jul 01, 2025.