National Stock Number (NSN) 4320-01-377-6852, or NIIN 013776852, (gear rotor set,rotary pump) was assigned July 23, 1993 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.
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 2 different suppliers. The last contract numbers awarded were: SPE7M122V6689, SPE7M122V6164, SPE7M115V0757, SPE7M114VH930. The total value of the awarded contracts has been US$ 8,662.15.
This NSN is somewhat common among different platforms, belonging to 6 different weapons systems.
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 Jan 02, 2013, 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 or the rights to use the data needed to purchase this part from additional sources are not owned by the Government and it has been determined that it is uneconomical to purchase them. Valid AMCs: 1, 2, 3, 4 and 5.
This NSN is assigned to Item Name Code (INC) 61764. [A PUMP ROTOR OR IMPELLER CONSISTING OF TWO GEARS, THE OUTER GEAR HAVING INTERNAL TEETH (LOBES) AND THE INNER GEAR HAVING EXTERNAL TEETH (LOBES). THE INNER GEAR HAS ONE OR TWO TEETH LESS THAN THE OUTER GEAR, AND IS MOUNTED TO MESH ECCENTRIC WITH THE OUTER GEAR. THE SPACE BETWEEN THE TEETH OF THE TWO MESHING GEARS CREATES A POSITIVE DISPLACEMENT OF FLUIDS FROM THE INLET PORT TO THE OUTLET PORT OF THE ROTARY PUMP.]. 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 4320013776852 does not contain precious metals.
This NSN is associated to Schedule B 8483409000: gears and gearing, other than toothed wheels, chain sprockets and other transmission elements entered separately. The Schedule B End Use is listed as industrial machines, other. NAICS classification category 333612: speed changer, industrial high-speed drive, and gear manufacturing.
This information was last updated on Jun 01, 2025.