National Stock Number (NSN) 4730-00-275-9451, or NIIN 002759451, (reducer,tube) was assigned August 8, 1973 in the Federal Logistics Information System (FLIS). This NIIN is Available for Manual Assignment. This NSN replaces 1 stock number, 4730013375104.
There are 14 manufacturer part numbers associated with this NSN. One of those part number(s) are considered obsolete. The manufacturer part numbers were originally supplied by 10 suppliers. Today, 10 suppliers are listed as Active suppliers for this NSN. Of the active suppliers, 7 suppliers are deemed design controlled or valid supply parts.
This part number has not been procured by the US Government in over 5 years, with the most recent procurement date of Aug 01, 2014. There have been 22 contracts issued for this part number, with 23 awards given. There is heavy competition for this NSN. The US Government has awarded contracts to 12 different suppliers. The last contract numbers awarded were: SPE7M314V6519, SPE7M314V6519, SPE7M314V6519, SPE7M014VC968, SPE7M014VC968. The total value of the awarded contracts has been US$ 293,542.77.
This NSN is somewhat common among different platforms, belonging to 9 different weapons systems.
There has been a small amount of demand for this national stock number. The demand for this NSN originated from less than 5 countries. Based on a planned procurement review by the Primary Inventory Control Activity (PICA) on Apr 02, 2006, this NSN's acquisition method was noted as: Suitable for Competitive Acquisition. (Potential sources shall include dealers/distributors.) This part requires engineering source approval by the design control activity in order to maintain the quality of the part. An alternate source must qualify in accordance with the design control activity's procedures, as approved by the cognizant Government engineering activity. Valid AMCs: 1, 2, 3, 4 and 5.
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 4730002759451 does not contain precious metals.
This NSN is associated to Schedule B 8108908000: other wrought titanium, nesoi. The Schedule B End Use is listed as nonferrous metals, other. NAICS classification category 331491: nonferrous metal (except copper and aluminum) rolling, drawing, and extruding.
This information was last updated on Jul 01, 2025.