National Stock Number
4730-00-949-1770
National Stock Number (NSN) 4730-00-949-1770, or NIIN 009491770, (reducer,tube) was assigned April 15, 1966 in the Federal Logistics Information System (FLIS). NIIN 009491770 was cancelled on May 24, 2012, with a cancelled status of "Item is Cancelled - USE." This NSN was replaced by NSN 4730006847451. This NSN does not replace any other NSNs.
There are 9 manufacturer part numbers associated with this NSN. 2 of those part number(s) are considered obsolete. The manufacturer part numbers were originally supplied by 8 suppliers. Today, 4 suppliers are listed as Active suppliers for this NSN. Of the active suppliers, 4 suppliers are 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.
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 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 4730009491770 contains an unknown precious metal.
This information was last updated on Jul 01, 2025.