National Stock Number
4730-00-839-1720
National Stock Number (NSN) 4730-00-839-1720, or NIIN 008391720, (seal,conical,flared tube fitting) was assigned December 14, 1966 in the Federal Logistics Information System (FLIS). This NIIN is Available for Manual Assignment. This NSN replaces 3 stock numbers: 4730013672978, 4730010799277, 4730012445637.
There are 12 manufacturer part numbers associated with this NSN. 4 of those part number(s) are considered obsolete. The manufacturer part numbers were originally supplied by 10 suppliers. Today, 8 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 a year. There have been 12 contracts issued for this part number, with 12 awards given. There is minimal competition for this NSN. The US Government has awarded contracts to 5 different suppliers. The last contract numbers awarded were: SPE7M321P1506, SPE5E119F0142, SPE7M318V5160, SPE7M517V8438, SPE7M915V6089. The total value of the awarded contracts has been US$ 15,494.04.
This NSN is very common among different weapons systems, belonging to 25 different platforms.
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 25, 2008, this NSN's acquisition method was noted as: Suitable for Competitive Acquisition. (Potential sources shall include dealers/distributors.) The annual buy value of this part falls below the screening threshold of $10,000 but it has been screened for known source(s). (NOTE: This code shall not be used when screening parts entering the inventory. It shall not be assigned in preference to or supersede any other AMSC.) Valid AMCs: 1, 2, 3, 4 and 5.
This NSN is assigned to Item Name Code (INC) 32837. [A CYLINDRICAL SOFT METALLIC CRUSH ITEM USED TO SEAL HIGH PRESSURE FLARED TUBE CONNECTIONS. IT IS DESIGNED TO BE INSERTED BETWEEN THE CONICAL SURFACE OF A FLARED TUBE FITTING AND THE INNER SURFACE OF THE FLARED END OF THE CONNECTING TUBE.]. This item does not have a nuclear hardened feature but does have other critical feature(s) 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 4730008391720 does not contain precious metals.
This information was last updated on Jul 01, 2025.