National Stock Number
5120-00-517-7021
National Stock Number (NSN) 5120-00-517-7021, or NIIN 005177021, (crowfoot attachment,socket wrenc) was assigned January 1, 1963 in the Federal Logistics Information System (FLIS). This NIIN is Available for Manual Assignment. This NSN replaces 1 stock number, 5120002370928.
There are 4 manufacturer part numbers associated with this NSN. One of those part number(s) are considered obsolete. The manufacturer part numbers were originally supplied by 2 suppliers. 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. ISO Group has several sources of supply for this NSN.
This part number has not been procured by the US Government in over 5 years.
There has been very little 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 Jun 22, 1999, this NSN's acquisition method was noted as: Not established. Not established.
This NSN is assigned to Item Name Code (INC) 17106. [A WRENCH COMPONENT WHICH MAY CONTAIN NOTCHES WITHIN AN OPEN END, BOX, OPEN WALL BOX, 2 OR 3 LUG OPEN END WRENCH OPENING HAVING A SQUARE, INTERNAL, FIXED, ECCENTRIC DRIVE PARALLEL TO THE WRENCH OPENING, DESIGNED TO RECEIVE THE EXTERNAL DRIVE END OF A HANDLE, SOCKET WRENCH. ITEMS HAVING AN OPEN END TYPE WRENCH OPENING MAY HAVE A SECOND DRIVE OPENING AT RIGHT ANGLES TO THE WRENCH OPENING. SEE ALSO SOCKET, CROWFOOT WRENCH HEAD AND HEAD, CROWFOOT SOCKET WRENCH.]. 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 5120005177021 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.