PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

56963Piston,hydraulic Motor-Pump

Parker Hannifin Corporation Div Hydraulic Systems Division · NSN 4320-00-866-8183 · FSC 4320 · No Item Name Available
Verified by PartsTable
NSN 4320-00-866-8183 — this item is cataloged by the U.S. Government under National Stock Number 4320-00-866-8183. Primary manufacturer part number: 56963.
Features
  • Piston,hydraulic Motor-Pump — FSC 4320
  • FSC Application Data: PUMP,AXIAL PISTONS
  • General Characteristics Item Description: REWORK IF GROOVES IN EXCESS OF 0.003 IN. ON CLOSED END,0.156 IN. DIAHOLE ON CLOSED END IN
  • 1 verified cross-reference
  • Primary manufacturer: Parker Hannifin Corporation Div Hydraulic Systems Division
Applications
  • Hydraulic and pneumatic systems
  • Industrial process pumping
  • Military vehicle hydraulics
General Description

The Piston,hydraulic Motor-Pump, cataloged under National Stock Number 4320-00-866-8183, is classified within Federal Supply Class 4320 (No Item Name Available) of the Pumps and Compressors group. The primary manufacturer of record is Parker Hannifin Corporation Div Hydraulic Systems Division. Government technical data includes 2 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 1 commercial cross-reference from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 3 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN4320-00-866-8183
Primary Part Number56963
Item NamePiston,hydraulic Motor-Pump
FSC / FSG4320 / 43 — No Item Name Available
ManufacturerParker Hannifin Corporation Div Hydraulic Systems Division
StatusACTIVE
FSC Application DataPUMP,AXIAL PISTONS
General Characteristics Item DescriptionREWORK IF GROOVES IN EXCESS OF 0.003 IN. ON CLOSED END,0.156 IN. DIAHOLE ON CLOSED END IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 3
5305-00-010-0739100739 INTERCHANGEABLE
Screw,machine
General Motors Llc Dba General Motors Llc
5920-01-370-626856963 INTERCHANGEABLE
Fuse,cartridge
Dover Corp Groen Div
4730-01-429-542556963 INTERCHANGEABLE
Cap,pipe
Spirax Sarco Inc Dba Spirax Sarco
Cross-Reference Index
Part NumberManufacturer
56963 PRIMARY Parker Hannifin Corporation Div Hydraulic Systems Division (USA)
Related Parts
5305-00-010-0739INTERCHANGEABLE
SCREW,MACHINE
100739
5920-01-370-6268INTERCHANGEABLE
FUSE,CARTRIDGE
56963
4730-01-429-5425INTERCHANGEABLE
CAP,PIPE
56963

Frequently Asked Questions

What is NSN 4320-00-866-8183?

NSN 4320-00-866-8183 is a Piston,hydraulic Motor-Pump, manufactured by Parker Hannifin Corporation Div Hydraulic Systems Division, classified under FSC 4320 (No Item Name Available). Status: active.

What are the part numbers for NSN 4320-00-866-8183?

NSN 4320-00-866-8183 has 1 cross-referenced part number: 56963 (Parker Hannifin Corporation Div Hydraulic Systems Division).

What NSN replaces 4320-00-866-8183?

There are 3 known substitutes for 4320-00-866-8183: 5305-00-010-0739, 5920-01-370-6268, 4730-01-429-5425. Verify interchangeability with system specifications before substitution.

What are the specifications of 56963?

Key specifications for 56963: FSC Application Data: PUMP,AXIAL PISTONS; End Item Identification: 43207581736; General Characteristics Item Description: REWORK IF GROOVES IN EXCESS OF 0.003 IN. ON CLOSED END,0.156 IN. DIAHOLE ON CLOSED END IN. 3 total characteristics are documented in the Federal Logistics Information System.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
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