National Stock Number
4320-01-027-1551
National Stock Number (NSN) 4320-01-027-1551, or NIIN 010271551, (yoke,hydraulic motor-pump) was assigned September 9, 1976 in the Federal Logistics Information System (FLIS). This NIIN is Available for Manual Assignment. This NSN replaces 1 stock number, 1650004646304.
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, 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 5 years, with the most recent procurement date of May 06, 2013. There has been one contract issued for this part number, with one award given. The US Government has only awarded those contracts to one supplier. The last contract numbers awarded were: SPM4A110G0002. The total value of the awarded contracts has been US$ 8,658.27.
This NSN is somewhat common among different platforms, belonging to 3 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 Jul 02, 2005, this NSN's acquisition method was noted as: Acquire directly from the actual manufacturer, whether or not the prime contractor is the actual manufacturer. This part requires engineering source approval by the design control activity in order to maintain the quality of the part. An alternate source must qualify in accordance with the design control activity's procedures, as approved by the cognizant Government engineering activity. Valid AMCs: 1, 2, 3, 4 and 5.
This NSN is assigned to Item Name Code (INC) 61790. [AN ITEM WHICH ADJUSTS THE ANGLE OF A ROTATING CYLINDER IN RELATION TO THE DRIVE SHAFT AXIS, OR ADJUSTS THE ANGLE OF A PISTON DRIVING CAM IN A VARIABLE DELIVERY AXIAL PISTONS PUMP OR A VARIABLE DISPLACEMENT HYDRAULIC MOTOR, THUS INCREASING OR DECREASING PISTON STROKE WITH A CORRESPONDING CHANGE IN RATE OF FLUID FLOW.]. 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 4320010271551 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.