National Stock Number
4320-00-172-1910
National Stock Number (NSN) 4320-00-172-1910, or NIIN 001721910, (shaft,transmission,pump) was assigned August 23, 1972 in the Federal Logistics Information System (FLIS). This NIIN is Available for Manual Assignment. This NSN replaces 1 stock number, 4320001721909.
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 2 suppliers. Today, one supplier is 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 5 years.
This NSN is unique to one weapons system.
Based on a planned procurement review by the Primary Inventory Control Activity (PICA) on Dec 10, 2014, 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 data needed to produce this item from additional sources is not physically available. Valid AMCs: 3, 4 and 5.
This NSN is assigned to Item Name Code (INC) 39430. [AN INTERNAL COMPONENT OF A PUMP WHICH MAY BE EITHER TOTALLY ENCLOSED WITHIN THE PUMP FOR DRIVING OTHER INTERNAL COMPONENTS OR IT MAY EXTEND BEYOND THE PUMP HOUSING TO BE EITHER CONNECTED TO AN EXTERNAL POWER SOURCE OR TO PROVIDE POWER TO OTHER MACHINERY.]. 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 4320001721910 contains an unknown precious metal.
This NSN is associated to Schedule B 8483308065: transmission shafts and cranks: bearing housings, plain shaft bearings with housing, nesoi. The Schedule B End Use is listed as industrial machines, other. NAICS classification category 333613: mechanical power transmission equipment manufacturing.
This information was last updated on Aug 01, 2025.