National Stock Number
5310-01-556-6594
National Stock Number (NSN) 5310-01-556-6594, or NIIN 015566594, (nut,plain,castellated,hexagon) was assigned October 3, 2007 in the Federal Logistics Information System (FLIS). NIIN 015566594 was cancelled on April 2, 2009, with a cancelled status of "Item is Cancelled as Duplicate." This NSN was replaced by NSN 5310012910001. 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. 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.
This NSN is assigned to Item Name Code (INC) 01854. [A NUT HAVING 6 FLAT SIDES, FLAT ON THE BOTTOM AND HAVING A SLOTTED CYLINDRICAL OR DOME SHAPED UPPER PORTION. IT IS DESIGNED TO PROVIDE POSITIVE LOCKING WHEN USED WITH A SOLID OR SPLIT (COTTER) PIN. EXCLUDES:NUT (1), PLAIN, SLOTTED, HEXAGON.]. There is no data in the HMIRS and the NSN is in an FSC not generally suspected of containing hazardous materials. NSN 5310015566594 does not contain precious metals.
This information was last updated on Aug 01, 2025.