National Stock Number
5310-01-221-0579
National Stock Number (NSN) 5310-01-221-0579, or NIIN 012210579, (washer,concave) was assigned November 23, 1985 in the Federal Logistics Information System (FLIS). NIIN 012210579 was cancelled on September 2, 1995, with a cancelled status of "Item is Cancelled as Duplicate." This NSN was replaced by NSN 5310001282007. This NSN does not replace any other NSNs.
There are no manufacturer part numbers associated to 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) 15930. [A WASHER WHICH IS ROUND WITH A CENTRALLY LOCATED HOLE. ONE BEARING SURFACE IS SMOOTH, FLAT, AND UNBROKEN, THE OTHER BEARING SURFACE IS SMOOTH, UNBROKEN, AND IS RECESSED TO FORM A CURVED OR SPHERICAL CONTOUR. SEE ALSO WASHER (1), CONVEX. EXCLUDES:WASHER (1), RECESSED AND BEARING, WASHER, THRUST.]. There is no data in the HMIRS and the NSN is in an FSC not generally suspected of containing hazardous materials. NSN 5310012210579 does not contain precious metals.
This information was last updated on Jul 01, 2025.