National Stock Number
4730-01-219-1388
National Stock Number (NSN) 4730-01-219-1388, or NIIN 012191388, (reducer,boss) was assigned October 22, 1985 in the Federal Logistics Information System (FLIS). NIIN 012191388 was cancelled on October 2, 2006, with a cancelled status of "Item is Cancelled as Duplicate." This NSN was replaced by NSN 4730009541120. 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 unique to one weapons system.
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 4730012191388 does not contain precious metals.
This information was last updated on Aug 01, 2025.