National Stock Number
4730-00-187-3580
National Stock Number (NSN) 4730-00-187-3580, or NIIN 001873580, (reducer,boss) was assigned October 3, 1969 in the Federal Logistics Information System (FLIS). This NSN does not replace any other NSNs.
There are 10 manufacturer part numbers associated with this NSN. One of those part number(s) are considered obsolete. The manufacturer part numbers were originally supplied by 4 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, with the most recent procurement date of Oct 08, 2019. There has been one contract issued for this part number, with one award given. The US Government has only awarded those contracts to one supplier. The last contract numbers awarded were: SPM5E120FA292. The total value of the awarded contracts has been US$ 200.87.
This NSN is unique to one weapons system.
There has been a small amount of 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) 23541. [A STRAIGHT FITTING HAVING A BOSS CONNECTION OF A DIFFERENT SIZE AT EACH END. BOTH CONNECTIONS HAVE EXTERNAL OR INTERNAL MACHINE THREADS (STRAIGHT THREADS OTHER THAN PIPE OR HOSE SERIES) AND ARE DESIGNED TO FACILITATE A GASKET, PREFORMED PACKING, WASHER, OR THE LIKE TO FORM A SEAL AT THE BOSS. 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 4730001873580 does not contain precious metals.
This information was last updated on Jul 01, 2025.