National Stock Number (NSN) 4730-01-163-6997, or NIIN 011636997, (coupling assembly,tube,flexible) was assigned October 6, 1983 in the Federal Logistics Information System (FLIS). This NIIN is Available for Manual Assignment. This NSN replaces 1 stock number, 4730010430895.
There are 13 manufacturer part numbers associated with this NSN. 8 of those part number(s) are considered obsolete. The manufacturer part numbers were originally supplied by 8 suppliers. Today, 7 suppliers are listed as Active suppliers for this NSN. Of the active suppliers, 2 suppliers are deemed design controlled or valid supply parts. ISO Group has a strong supply network for this NSN, with 13 sources of supply.
This part number has been procured by the US Government within the last year, but shows no recent (last 90 days) procurement activity. There have been 51 contracts issued for this part number, with 60 awards given. There is minimal competition for this NSN. The US Government has awarded contracts to 4 different suppliers. The last contract numbers awarded were: SPE7M125F1053, SPE7MX24F413S, SPE7MX24F115N, SPE7MX24F9289, SPE7MX24F4164. The total value of the awarded contracts has been US$ 3,026,099.18.
This NSN is somewhat common among different platforms, belonging to 6 different weapons systems.
There has been a moderate amount of demand for this national stock number. Globally, demand for this NSN has originated from 7 countries. Based on a planned procurement review by the Primary Inventory Control Activity (PICA) on Dec 11, 2013, 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) 32834. [A MULTIPIECE GASKET SEALED ITEM SPECIFICALLY DESIGNED FOR JOINING PLAIN END FERRULED TUBING OR BEADED END TUBING THAT WILL ACCOMMODATE ANGULAR MISALIGNMENT, AXIAL MOTION AND PERMITS EXPANSION AND CONTRACTION OF THE TUBING. IT MAY BE DISCONNECTED FOR SEAL REPLACEMENT WITHOUT DISTURBING THE REST OF THE LINE. THE SEALS ARE NOT NORMALLY FURNISHED WITH THE ITEM. FOR RIGID TYPE ITEMS SEE COUPLING, TUBE; AND UNION, TUBE.]. 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 4730011636997 does not contain precious metals.
This NSN is associated to Schedule B 7609000000: aluminum tube or pipe fittings (couplings,elbows sleeves). The Schedule B End Use is listed as finished metal shapes. NAICS classification category 332919: other metal valve and pipe fitting manufacturing.
This information was last updated on Jul 01, 2025.