National Stock Number
4730-01-553-7181
National Stock Number (NSN) 4730-01-553-7181, or NIIN 015537181, (collar,flared,pipe fitting) was assigned July 24, 2007 in the Federal Logistics Information System (FLIS). This NIIN is Available for Manual Assignment. This NSN does not replace any other NSNs.
There are no manufacturer part numbers associated to this NSN. ISO Group has several sources of supply for this NSN.
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 16 contracts issued for this part number, with 16 awards given. There is minimal competition for this NSN. The US Government has awarded contracts to 3 different suppliers. The last contract numbers awarded were: SPE7M325V1870, SPE7M323V3540, SPE7M321V1264, SPE7M320V2598, SPE7M320V2598. The total value of the awarded contracts has been US$ 56,160.48.
This NSN is somewhat common among different platforms, belonging to 2 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 Dec 11, 2013, this NSN's acquisition method was noted as: Suitable for Competitive Acquisition. (Potential sources shall include dealers/distributors.) The Government has unlimited rights to the technical data, and the data package is complete. Valid AMCs: 1 and 2.
This NSN is assigned to Item Name Code (INC) 48531. [A CYLINDRICAL METALLIC ITEM FOR USE WITH PIPING, DESIGNED TO BACK UP THE FLARED END AND PROVIDE A BEARING SURFACE FOR THE NUT OR OUTER SLEEVE OF A PIPE COUPLING. SEE SLEEVE, FLARED (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 4730015537181 does not contain precious metals.
This information was last updated on Aug 01, 2025.