National Stock Number
2640-01-293-5657
National Stock Number (NSN) 2640-01-293-5657, or NIIN 012935657, (valve stem washer,pneumatic tire) was assigned February 3, 1989 in the Federal Logistics Information System (FLIS). NIIN 012935657 was cancelled on April 2, 1996, with a cancelled status of "Item is Cancelled WITHOUT Replacement." There is no known replacement specified for this stock number. 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) 07443. [A ROUND OR BRIDGE TYPE WASHER USED TO MAINTAIN ALIGNMENT, AND TO MAKE AN AIR TIGHT CONNECTION OF VALVE STEM TO THE TUBE.]. There is no information in the HMIRS; however, the NSN is in an FSC in Table II of Federal Standard 313 and an MSDS may be required by the user. The requirement for an MSDS is dependent on a hazard determination of the supplier or the intended end use of the product. NSN 2640012935657 does not contain precious metals.
This information was last updated on Aug 01, 2025.