National Stock Number
5340-01-176-8532
National Stock Number (NSN) 5340-01-176-8532, or NIIN 011768532, (plug,expansion) was assigned April 17, 1984 in the Federal Logistics Information System (FLIS). NIIN 011768532 was cancelled on June 2, 2002, with a cancelled status of "Item is Cancelled as Duplicate." This NSN was replaced by NSN 5340010533813. This NSN replaces 1 stock number, 5340012125941.
There are no manufacturer part numbers associated to this NSN. 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.]. This item does not have a nuclear hardened feature or any other critical feature such as tolerance, fit restriction or application. 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 5340011768532 does not contain precious metals.
This information was last updated on Jun 01, 2025.