PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

51412Piston,pump

Parker Hannifin Corporation Div Hydraulic Systems Division · NSN 4320-00-789-2451 · FSC 4320 · No Item Name Available
Verified by PartsTable
NSN 4320-00-789-2451 — this item is cataloged by the U.S. Government under National Stock Number 4320-00-789-2451. Primary manufacturer part number: 51412.
Features
  • Piston,pump — FSC 4320
  • 1 verified cross-reference
  • Primary manufacturer: Parker Hannifin Corporation Div Hydraulic Systems Division
Applications
  • Fluid transfer and circulation
  • Cooling system maintenance
  • Industrial process pumping
General Description

The Piston,pump, cataloged under National Stock Number 4320-00-789-2451, 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. This item has 1 commercial cross-reference from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 6 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN4320-00-789-2451
Primary Part Number51412
Item NamePiston,pump
FSC / FSG4320 / 43 — No Item Name Available
ManufacturerParker Hannifin Corporation Div Hydraulic Systems Division
StatusACTIVE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 6
5950-00-933-9416SMB526866 INTERCHANGEABLE
Transformer,audio Frequency
Us Army Communications & Electronics Materiel Readiness Command Logistics Engineering Dir
5365-01-305-70675740224 INTERCHANGEABLE
Plug,machine Thread
Am General Llc
3950-01-476-454851412 INTERCHANGEABLE
Control Station,hoist
Ingersoll-Rand Co Material Handling Div
4720-01-628-650951412 INTERCHANGEABLE
Hose Assembly,nonmetallic
Amerex Corporation Dba Getz Manufacturing Div Amerex Corporation Dba Getz Manufacturing
5340-01-647-864951412 INTERCHANGEABLE
Mount,resilient,utility
Tech Products Corp
4720-01-698-344351412 INTERCHANGEABLE
Tubing,nonmetallic
Cowles Operating Company Dba Carlin Combustion Technology Div Carlin Combustion Technologies
Cross-Reference Index
Part NumberManufacturer
51412 PRIMARY Parker Hannifin Corporation Div Hydraulic Systems Division (USA)
Related Parts
5950-00-933-9416INTERCHANGEABLE
TRANSFORMER,AUDIO FREQUENCY
SMB526866
5365-01-305-7067INTERCHANGEABLE
PLUG,MACHINE THREAD
5740224
3950-01-476-4548INTERCHANGEABLE
CONTROL STATION,HOIST
51412
4720-01-628-6509INTERCHANGEABLE
HOSE ASSEMBLY,NONMETALLIC
51412
5340-01-647-8649INTERCHANGEABLE
MOUNT,RESILIENT,UTILITY
51412
4720-01-698-3443INTERCHANGEABLE
TUBING,NONMETALLIC
51412

Frequently Asked Questions

What is NSN 4320-00-789-2451?

NSN 4320-00-789-2451 is a Piston,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 4320-00-789-2451?

NSN 4320-00-789-2451 has 1 cross-referenced part number: 51412 (Parker Hannifin Corporation Div Hydraulic Systems Division).

What NSN replaces 4320-00-789-2451?

There are 6 known substitutes for 4320-00-789-2451: 5950-00-933-9416, 5365-01-305-7067, 3950-01-476-4548 and 3 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 51412?

Key specifications for 51412: End Item Identification: T-39 ENGINE. 1 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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