National Stock Number
5340-00-426-2852
National Stock Number (NSN) 5340-00-426-2852, or NIIN 004262852, (plug,expansion) was assigned January 1, 1963 in the Federal Logistics Information System (FLIS). NIIN 004262852 was cancelled on October 2, 2006, with a cancelled status of "Item is Cancelled as Duplicate." This NSN was replaced by NSN 5342000076350. 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) 03797. [A RELATIVELY THIN METALLIC ITEM, HAVING A CONCAVE OR CUPPED CONTOUR, DESIGNED TO EFFECT ITS OWN SEAL BY COMPRESSION AGAINST THE CIRCUMFERENCE OF A HOLE. IT IS USED AS A BLOWOUT PLUG IN BOILERS, ENGINES, AND THE LIKE TO RELIEVE THE PRESSURE CREATED BY THE EXPANSION OF FLUIDS CAUSED BY HEAT OR FREEZING.]. 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 5340004262852 contains an unknown precious metal.
This information was last updated on Jul 01, 2025.