National Stock Number (NSN) 4820-00-393-4288, or NIIN 003934288, (stem,needle valve) was assigned January 1, 1963 in the Federal Logistics Information System (FLIS). This NIIN is Available for Manual Assignment. This NSN does not replace any other NSNs.
There is only one manufacturer part number associated with this NSN. None of the associated part number(s) are considered obsolete. The manufacturer part numbers were originally supplied by one supplier. Today, one supplier is listed as an Active supplier for this NSN. Of the active suppliers, only one supplier is 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.
This NSN is somewhat common among different platforms, belonging to 6 different weapons systems.
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: Acquire directly from the actual manufacturer, whether or not the prime contractor is the actual manufacturer. 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) 28686. [A METALLIC, NEEDLE SHAPED ITEM HAVING A ONE-PIECE STEM THREADED FOR SECURING TO, OR POSITIONING INTO, A MATING PART. THE POINT MAY BE OF VARIOUS ANGLES OR SHAPES, SUCH AS CONICAL OR TAPERED, TO CORRESPOND WITH THE MATING SEAT. THE ITEM IS DESIGNED FOR THE FINE CONTROL FLOW OR RESTRICTION OF LIQUIDS OR GASES IN A GIVEN SYSTEM. IT MAY BE PROVIDED WITH A KNURLED HEAD FOR ROTATION BY THUMBS AND FINGERS, OR BE DRIVEN WITH EITHER A WRENCH, HANDLE, OR INSERTED DRIVER. EXCLUDES VALVE, FUEL-AIR MIXTURE CONTROL, AUTOMATIC.]. 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 4820003934288 contains an unknown precious metal.
This NSN is associated to Schedule B 8481909090: parts of taps, cocks, valves and similar appliances, nesoi. The Schedule B End Use is listed as industrial machines, other. NAICS classification category 332911: industrial valve manufacturing.
This information was last updated on Aug 01, 2025.