National Stock Number
4320-01-540-5393
National Stock Number (NSN) 4320-01-540-5393, or NIIN 015405393, (header,cooler,lubricating oil) was assigned May 23, 2006 in the Federal Logistics Information System (FLIS). NIIN 015405393 was cancelled on January 2, 2008, with a cancelled status of "Item is Cancelled as Duplicate." This NSN was replaced by NSN 2910015565144. 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.
There has been very little demand for this national stock number. The demand for this NSN originated from less than 5 countries.
This NSN is assigned to Item Name Code (INC) 52922. [A CASTED END COVER WHICH KEEPS OIL FROM LEAKING OUT OF ONE END OF THE COOLER TUBE.]. This item does not have a nuclear hardened feature or any other critical feature such as tolerance, fit restriction or application. There is no data in the HMIRS and the NSN is in an FSC not generally suspected of containing hazardous materials. NSN 4320015405393 does not contain precious metals.
This information was last updated on Aug 01, 2025.