National Stock Number
4730-00-278-3721
National Stock Number (NSN) 4730-00-278-3721, or NIIN 002783721, (nipple,pipe) was assigned January 1, 1963 in the Federal Logistics Information System (FLIS). This NIIN is Available for Manual Assignment. This NSN replaces 6 stock numbers. Five of the National Stock Numbers that it replaces are: 4730008272199, 4730008445466, 4730009731125, 4730009959656, 4730002039202.
There are 33 manufacturer part numbers associated with this NSN. 16 of those part number(s) are considered obsolete. The manufacturer part numbers were originally supplied by 27 suppliers. Today, 20 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 5 years, with the most recent procurement date of Nov 19, 2019. There have been 8 contracts issued for this part number, with 11 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: SPE7M320V0755, SPE7M320V0755, SPE7M319P4570, SPE7M319P4570, SPE7M318V4500. The total value of the awarded contracts has been US$ 20,800.71.
This NSN is very common among different weapons systems, belonging to 86 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 02, 2006, 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) 03782. [A STRAIGHT ONE-PIECE METALLIC PIPE 12 INCHES(304 MM)OR LESS IN LENGTH HAVING EXTERNAL THREADS OF THE SAME SIZE ON BOTH ENDS. IT MAY HAVE A CENTER SECTION WHICH IS EXTERNALLY SHAPED TO ACCOMMODATE A WRENCH. FOR PIPE HAVING INTERNAL THREADS 12 INCHES(304 MM)OR LESS IN LENGTH SEE COUPLING,PIPE. FOR PIPE IN EXCESS OF 12 INCHES(304 MM)SEE PIPE AS MODIFIED.]. 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 4730002783721 does not contain precious metals.
This NSN is associated to Schedule B 7412200000: copper alloy tube or pipe fittings. 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 Aug 01, 2025.