National Stock Number
3439-00-437-6721
National Stock Number (NSN) 3439-00-437-6721, or NIIN 004376721, (solder,tin alloy) was assigned February 18, 1972 in the Federal Logistics Information System (FLIS). This NIIN is Available for Manual Assignment. This NSN replaces 5 stock numbers: 3439004335646, 3439010049757, 3439005402673, 3439004801912, 3439002043925.
There are 9 manufacturer part numbers associated with this NSN. 4 of those part number(s) are considered obsolete. The manufacturer part numbers were originally supplied by one supplier. Today, there are no suppliers listed as an Active supplier for this NSN. Of the active suppliers, there are no suppliers that 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 4 contracts issued for this part number, with 4 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: SPE8E925V0002, SPE8E920V2182, SPE8E514V2474, SPM8E310V0253. The total value of the awarded contracts has been US$ 5,268.14.
This NSN is fairly common among different weapons systems, belonging to 20 different platforms.
There has been very little 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 Jul 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) 04987. [A SOLDER WHOSE MAIN INGREDIENT IS TIN. IT IS SUPPLIED IN FORM OF WIRE, BAR, STRIP, OR GRAINS (GRANULAR).]. This item does not have a nuclear hardened feature or any other critical feature such as tolerance, fit restriction or application. Information is in the Hazardous Materials Information Resource System (HMIRS). NSN 3439004376721 contains an unknown precious metal.
This NSN is associated to Schedule B 8515904000: brazing and soldering equipment parts; parts of hot spraying equipment. The Schedule B End Use is listed as metalworking machine tools. NAICS classification category 333992: welding and soldering equipment manufacturing.
This information was last updated on Aug 01, 2025.