National Stock Number
5120-00-243-1689
National Stock Number (NSN) 5120-00-243-1689, or NIIN 002431689, (extension,socket wrench) was assigned January 1, 1963 in the Federal Logistics Information System (FLIS). This NIIN is Available for Manual Assignment. This NSN replaces 7 stock numbers. Five of the National Stock Numbers that it replaces are: 5120013582759, 5120013352136, 5120014307919, 5120014739878, 5120013691100.
There are 22 manufacturer part numbers associated with this NSN. 14 of those part number(s) are considered obsolete. The manufacturer part numbers were originally supplied by 19 suppliers. Today, 14 suppliers are listed as Active suppliers for this NSN. Of the active suppliers, 7 suppliers are deemed design controlled or valid supply parts. ISO Group has a strong supply network for this NSN, with 22 sources of supply.
This part number has not been procured by the US Government in over 5 years.
This NSN is unique to one weapons system.
There has been a small amount of demand for this national stock number. The demand for this NSN originated from less than 5 countries. Based on a planned procurement review by the Primary Inventory Control Activity (PICA) on Nov 02, 2016, this NSN's acquisition method was noted as: Not established. Not established.
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 5120002431689 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.