National Stock Number
4730-12-321-7633
National Stock Number (NSN) 4730-12-321-7633, or NIIN 123217633, (reducer,tube) has an unknown assigned date. NIIN 123217633 was cancelled on October 2, 2003, with a cancelled status of "Item is Cancelled as Duplicate." This NSN was replaced by NSN 5130123600189. 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 2 suppliers. Today, 2 suppliers are listed as Active suppliers for this NSN. Of the active suppliers, there are no suppliers that are 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) 08506. [A STRAIGHT TUBE FITTING HAVING A DIFFERENT SIZE CONNECTION ON EACH END. IT IS DESIGNED TO JOIN TWO TUBES OF DIFFERENT SIZES. EXCLUDES:BUSHING (AS MODIFIED).].
This information was last updated on Aug 20, 2025.