National Stock Number
4320-01-273-2550
National Stock Number (NSN) 4320-01-273-2550, or NIIN 012732550, (valve plate,hydraulic motor-pump) was assigned February 22, 1988 in the Federal Logistics Information System (FLIS). This NIIN is Available for Manual Assignment. This NSN does not replace any other NSNs.
There are 2 manufacturer part numbers associated with this NSN. One 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.
This part number has not been procured by the US Government in over 5 years.
This NSN is assigned to Item Name Code (INC) 61766. [A RIGID ITEM OF VARIOUS SHAPES, WITH A CENTRALLY LOCATED APERTURE DESIGNED WITH INTERNAL PORTS. IT MAY HAVE PROVISIONS FOR MOUNTING. IT MUST HAVE A MACHINED FLAT SURFACE WITH INTERNAL PARTS OF A PUMP OR MOTOR. FOR ITEMS WITH EXTERNAL PORTS, SEE VALVE HEAD, HYDRAULIC MOTOR-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 4320012732550 contains an unknown precious metal.
This NSN is associated to Schedule B 8413919050: parts of hydraulic fluid power pumps. The Schedule B End Use is listed as industrial engines. NAICS classification category 333996: fluid power pump and motor manufacturing.
This information was last updated on Aug 01, 2025.