PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

43540Piston,hydraulic Motor-Pump

Eaton Aerospace, Llc Dba Jackson South · NSN 4320-01-328-6458 · FSC 4320 · No Item Name Available
Verified by PartsTable
NSN 4320-01-328-6458 — this item is cataloged by the U.S. Government under National Stock Number 4320-01-328-6458. Primary manufacturer part number: 43540.
Features
  • Piston,hydraulic Motor-Pump — FSC 4320
  • General Characteristics Item Description: CONSISTS OF P/N 290253-3 CAP,SOCKET 1,P/N 290255-2 LOCK,NUT 1,P/N 290256-2 ROD,CONNECTING 1,P/N 369702-19 SHIM,ADJUSTING 1,369709-5 PISTON 1,P/N 369712-3 NUT 1; 12.296IN.O/A LG,4.265IN.DIA,4 GROOVES SPACED 0.400IN. APART STARTING 2.625IN.FROM BOTTOM IN
  • 4 verified cross-references
  • Primary manufacturer: Eaton Aerospace, Llc Dba Jackson South
Applications
  • Hydraulic and pneumatic systems
  • Industrial process pumping
  • Military vehicle hydraulics
General Description

The Piston,hydraulic Motor-Pump, cataloged under National Stock Number 4320-01-328-6458, is classified within Federal Supply Class 4320 (No Item Name Available) of the Pumps and Compressors group. The primary manufacturer of record is Eaton Aerospace, Llc Dba Jackson South. Government technical data includes 1 verified specification, sourced from the Federal Logistics Information System (FLIS). This item has 4 commercial cross-references from 3 manufacturers, enabling identification through both NSN and commercial part number lookups. 4 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN4320-01-328-6458
Primary Part Number43540
Item NamePiston,hydraulic Motor-Pump
FSC / FSG4320 / 43 — No Item Name Available
ManufacturerEaton Aerospace, Llc Dba Jackson South
StatusACTIVE
General Characteristics Item DescriptionCONSISTS OF P/N 290253-3 CAP,SOCKET 1,P/N 290255-2 LOCK,NUT 1,P/N 290256-2 ROD,CONNECTING 1,P/N 369702-19 SHIM,ADJUSTING 1,369709-5 PISTON 1,P/N 369712-3 NUT 1; 12.296IN.O/A LG,4.265IN.DIA,4 GROOVES SPACED 0.400IN. APART STARTING 2.625IN.FROM BOTTOM IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 4
3455-00-808-42961741-2000 INTERCHANGEABLE
Cutter,milling,end
New York Twist Drill Inc
5950-01-330-76788509715-1 INTERCHANGEABLE
Reactor
Honeywell International Inc. Dba Honeywell International
5999-01-382-481543540 INTERCHANGEABLE
Contact,electrical
Mettler-Toledo Llc
5905-01-385-285343540 INTERCHANGEABLE
Resistor Subassembly
Air Techniques, Inc.
Cross-Reference Index
Part NumberManufacturer
43540 PRIMARY Eaton Aerospace, Llc Dba Jackson South (USA)
369712 Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier (USA)
369712 PIECE 5 Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier (USA)
369712PC5 Naval Sea Systems Command (USA)
Related Parts
3455-00-808-4296INTERCHANGEABLE
CUTTER,MILLING,END
1741-2000
5950-01-330-7678INTERCHANGEABLE
REACTOR
8509715-1
5999-01-382-4815INTERCHANGEABLE
CONTACT,ELECTRICAL
43540
5905-01-385-2853INTERCHANGEABLE
RESISTOR SUBASSEMBLY
43540

Frequently Asked Questions

What is NSN 4320-01-328-6458?

NSN 4320-01-328-6458 is a Piston,hydraulic Motor-Pump, manufactured by Eaton Aerospace, Llc Dba Jackson South, classified under FSC 4320 (No Item Name Available). Status: active.

What are the part numbers for NSN 4320-01-328-6458?

NSN 4320-01-328-6458 has 4 cross-referenced part numbers: 43540 (Eaton Aerospace, Llc Dba Jackson South), 369712 (Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier), 369712 PIECE 5 (Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier), 369712PC5 (Naval Sea Systems Command).

What NSN replaces 4320-01-328-6458?

There are 4 known substitutes for 4320-01-328-6458: 3455-00-808-4296, 5950-01-330-7678, 5999-01-382-4815 and 1 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 43540?

Key specifications for 43540: General Characteristics Item Description: CONSISTS OF P/N 290253-3 CAP,SOCKET 1,P/N 290255-2 LOCK,NUT 1,P/N 290256-2 ROD,CONNECTING 1,P/N 369702-19 SHIM,ADJUSTING 1,369709-5 PISTON 1,P/N 369712-3 NUT 1; 12.296IN.O/A LG,4.265IN.DIA,4 GROOVES SPACED 0.400IN. APART STARTING 2.625IN.FROM BOTTOM IN. 1 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