National Stock Number
4730-01-645-2878
National Stock Number (NSN) 4730-01-645-2878, or NIIN 016452878, (ring,nut,tube coupling) was assigned June 10, 2015 in the Federal Logistics Information System (FLIS). This NIIN is Available for Manual Assignment. 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.
This part number has not been procured by the US Government in over 5 years.
This NSN is assigned to Item Name Code (INC) 53432. [A SEMIRIGID METAL ITEM OF ROUND CROSS SECTION AND PREDETERMINED LENGTH, DESIGNED TO BE INSERTED INTO AN INTERNAL GROOVE OF A NUT,TUBE COUPLING. IT IS USED TO POSITION AND RETAIN THE TUBE WITHIN THE NUT. EXCLUDES:RING,RETAINING.]. There is no data in the HMIRS and the NSN is in an FSC not generally suspected of containing hazardous materials. NSN 4730016452878 does not contain precious metals.
This information was last updated on Aug 01, 2025.