National Stock Number
4730-01-201-7553
National Stock Number (NSN) 4730-01-201-7553, or NIIN 012017553, (reducer,boss) was assigned February 22, 1985 in the Federal Logistics Information System (FLIS). NIIN 012017553 was cancelled on December 2, 2001, with a cancelled status of "Item is Cancelled as Duplicate." This NSN was replaced by NSN 4730002311324. 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 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 critical feature such as tolerance, fit restrictions or application. Nuclear hardness properties have not been determined (not valid for input). There is no data in the HMIRS and the NSN is in an FSC not generally suspected of containing hazardous materials. NSN 4730012017553 does not contain precious metals.
This information was last updated on Aug 01, 2025.