PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

56560Cylinder Block Unit,hydraulic Mo

Parker Hannifin Corporation Div Hydraulic Systems Division · NSN 4320-00-955-9599 · FSC 4320 · No Item Name Available
Verified by PartsTable
NSN 4320-00-955-9599 — this item is cataloged by the U.S. Government under National Stock Number 4320-00-955-9599. Primary manufacturer part number: 56560.
Features
  • Cylinder Block Unit,hydraulic Mo — FSC 4320
  • FSC Application Data: PUMP UNIT,RECIPROCATING
  • General Characteristics Item Description: BRONZE,1.210 TO 1.220 IN. LG,11 TEETH INTERNAL INVOLUTE SPLINES 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 Cylinder Block Unit,hydraulic Mo, cataloged under National Stock Number 4320-00-955-9599, 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
NSN4320-00-955-9599
Primary Part Number56560
Item NameCylinder Block Unit,hydraulic Mo
FSC / FSG4320 / 43 — No Item Name Available
ManufacturerParker Hannifin Corporation Div Hydraulic Systems Division
StatusACTIVE
FSC Application DataPUMP UNIT,RECIPROCATING
General Characteristics Item DescriptionBRONZE,1.210 TO 1.220 IN. LG,11 TEETH INTERNAL INVOLUTE SPLINES IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 3
5815-00-570-3522SMB187144 INTERCHANGEABLE
Lever
Us Army Communications & Electronics Materiel Readiness Command Logistics Engineering Dir
6650-01-469-1864 INTERCHANGEABLE
Filter,light,optical Instrument
1740-01-689-547256560 INTERCHANGEABLE
Tractor,wheeled,aircraft Towing
Tld Wollard Llc
Cross-Reference Index
Part NumberManufacturer
56560 PRIMARY Parker Hannifin Corporation Div Hydraulic Systems Division (USA)
Related Parts
5815-00-570-3522INTERCHANGEABLE
LEVER
SMB187144
6650-01-469-1864INTERCHANGEABLE
FILTER,LIGHT,OPTICAL INSTRUMENT
1740-01-689-5472INTERCHANGEABLE
TRACTOR,WHEELED,AIRCRAFT TOWING
56560

Frequently Asked Questions

What is NSN 4320-00-955-9599?

NSN 4320-00-955-9599 is a Cylinder Block Unit,hydraulic Mo, 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 4320-00-955-9599?

NSN 4320-00-955-9599 has 1 cross-referenced part number: 56560 (Parker Hannifin Corporation Div Hydraulic Systems Division).

What NSN replaces 4320-00-955-9599?

There are 3 known substitutes for 4320-00-955-9599: 5815-00-570-3522, 6650-01-469-1864, 1740-01-689-5472. Verify interchangeability with system specifications before substitution.

What are the specifications of 56560?

Key specifications for 56560: End Item Identification: 4320009995363 57141 PUMP UNIT; FSC Application Data: PUMP UNIT,RECIPROCATING; General Characteristics Item Description: BRONZE,1.210 TO 1.220 IN. LG,11 TEETH INTERNAL INVOLUTE SPLINES IN. 3 total characteristics are documented in the Federal Logistics Information System.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com