PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

51800Piston,hydraulic Motor-Pump

Parker Hannifin Corporation Div Hydraulic Systems Division · NSN 1650-00-656-0421 · FSC 1650 · No Item Name Available
Verified by PartsTable
NSN 1650-00-656-0421 — this item is cataloged by the U.S. Government under National Stock Number 1650-00-656-0421. Primary manufacturer part number: 51800.
Features
  • Piston,hydraulic Motor-Pump — FSC 1650
  • 1 verified cross-reference
  • Primary manufacturer: Parker Hannifin Corporation Div Hydraulic Systems Division
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Piston,hydraulic Motor-Pump, cataloged under National Stock Number 1650-00-656-0421, is classified within Federal Supply Class 1650 (No Item Name Available) of the Aircraft Components and Accessories group. The primary manufacturer of record is Parker Hannifin Corporation Div Hydraulic Systems Division. This item has 1 commercial cross-reference from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 8 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Catalog Facts
Item NamePiston,hydraulic Motor-Pump
FSC / FSG1650 — No Item Name Available (FSG 16)
ManufacturersParker Hannifin Corporation Div Hydraulic Systems Division (CAGE 93835)
Technical Specifications
ParameterValue
NSN1650-00-656-0421
Primary Part Number51800
Item NamePiston,hydraulic Motor-Pump
FSC / FSG1650 / 16 — No Item Name Available
ManufacturerParker Hannifin Corporation Div Hydraulic Systems Division
StatusACTIVE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 8
4140-00-610-7789 INTERCHANGEABLE
Fan,electrical Rota
5210-00-790-1903T436XRL-11 INTERCHANGEABLE
Caliper,micrometer,outside
L.s. Starrett Company (the) Div Tool Division
2940-01-049-74631046Z279 INTERCHANGEABLE
Filter Element,intake Air Cleane
Morris Material Handling, Inc.
5930-01-524-85495180-0 INTERCHANGEABLE
Cover,electrical Switch
Raco, a Division of Hubbell Incorporated(delaware)
5130-01-581-094651800 INTERCHANGEABLE
Sander,disk,pneumatic,portable
Us Air Tool Co Inc Dba Us Air Tool Co Inc
5975-01-587-09865180-0 INTERCHANGEABLE
Plate,wall,electrical
Hubbell Premise Wiring Inc
5305-01-588-022251-800 INTERCHANGEABLE
Machine Screw and Nut and Washer
Thermo King Corporation Dba Phoenix Global Distirbution.
2940-01-683-892851800 INTERCHANGEABLE
Filter Element,fluid
Wix Corp
Cross-Reference Index
Part NumberManufacturer
51800 PRIMARY Parker Hannifin Corporation Div Hydraulic Systems Division (USA)
Related Parts
4140-00-610-7789INTERCHANGEABLE
FAN,ELECTRICAL ROTA
5210-00-790-1903INTERCHANGEABLE
CALIPER,MICROMETER,OUTSIDE
T436XRL-11
2940-01-049-7463INTERCHANGEABLE
FILTER ELEMENT,INTAKE AIR CLEANE
1046Z279
5930-01-524-8549INTERCHANGEABLE
COVER,ELECTRICAL SWITCH
5180-0
5130-01-581-0946INTERCHANGEABLE
SANDER,DISK,PNEUMATIC,PORTABLE
51800
5975-01-587-0986INTERCHANGEABLE
PLATE,WALL,ELECTRICAL
5180-0
5305-01-588-0222INTERCHANGEABLE
MACHINE SCREW AND NUT AND WASHER
51-800
2940-01-683-8928INTERCHANGEABLE
FILTER ELEMENT,FLUID
51800

Frequently Asked Questions

What is NSN 1650-00-656-0421?

NSN 1650-00-656-0421 is a Piston,hydraulic Motor-Pump, manufactured by Parker Hannifin Corporation Div Hydraulic Systems Division, classified under FSC 1650 (No Item Name Available). Status: active.

What are the part numbers for NSN 1650-00-656-0421?

NSN 1650-00-656-0421 has 1 cross-referenced part number: 51800 (Parker Hannifin Corporation Div Hydraulic Systems Division).

What NSN replaces 1650-00-656-0421?

There are 8 known substitutes for 1650-00-656-0421: 4140-00-610-7789, 5210-00-790-1903, 2940-01-049-7463 and 5 more. Verify interchangeability with system specifications before substitution.

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