National Stock Number
4730-01-181-8478
National Stock Number (NSN) 4730-01-181-8478, or NIIN 011818478, (seal nut,pipe) was assigned June 16, 1984 in the Federal Logistics Information System (FLIS). NIIN 011818478 was cancelled on July 2, 2001, with a cancelled status of "Item is Cancelled - USE." This NSN was replaced by NSN 4730010136410. 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) 23542. [A HEXAGONAL NUT CONTAINING INTERNAL TAPERED PIPE THREADS. IT HAS RAISED UNDETACHABLE SEALING MEMBER ON THE FACE OF THE BEARING SURFACE. THE ITEM, WHEN INSTALLED, PROVIDES A METHOD OF SEALING THE CONNECTION AT THE BOSS OR MATING SURFACE. IT DOES NOT PROVIDE ANY METHOD FOR LOCKING AT THE CONNECTION. SEE LOCKNUT, PIPE.]. This item does not have a critical feature such as tolerance, fit restrictions or application. Nuclear hardness properties have not been determined (not valid for input). There is no data in the HMIRS and the NSN is in an FSC not generally suspected of containing hazardous materials. NSN 4730011818478 does not contain precious metals.
This information was last updated on Jul 01, 2025.