National Stock Number
5120-01-663-7840
National Stock Number (NSN) 5120-01-663-7840, or NIIN 016637840, (adapter,socket wrench) was assigned May 23, 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) 03353. [A RIGID ADAPTER LESS THAN FOUR INCHES (101.6 MM) LONG USED TO CONNECT SOCKETS TO HANDLES, POWER TOOLS, OR TO OTHER ATTACHMENTS WHICH ARE NOT DESIGNED FOR DIRECT MATING TO EACH OTHER. SEE ALSO RATCHET ATTACHMENT, SOCKET WRENCH; UNIVERSAL JOINT, SOCKET WRENCH ATTACHMENT; EXTENSION, SOCKET WRENCH; AND ADAPTER-EXTENSION, SOCKET WRENCH; EXCLUDES:ADAPTER, SOCKET, CROWFOOT SOCKET WRENCH HEAD; SOCKET, WRENCH, REFRIGERATION VALVE STEM; AND HOLDER, SCREWDRIVER BIT, FEMALE SQUARE DRIVE.]. 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 5120016637840 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.