PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

3-1158-6Piston,pump

Parker-Hannifin Corporation Dba Pneutronics Div Hydraulic Valve Division · NSN 4320-01-397-8545 · FSC 4320 · No Item Name Available
Verified by PartsTable
NSN 4320-01-397-8545 — this item is cataloged by the U.S. Government under National Stock Number 4320-01-397-8545. Primary manufacturer part number: 3-1158-6.
Features
  • Piston,pump — FSC 4320
  • Surface Finish: FINISHED
  • Material: STEEL
  • Finished Size Designation: STANDARD
  • 4 verified cross-references
  • Primary manufacturer: Parker-Hannifin Corporation Dba Pneutronics Div Hydraulic Valve Division
Applications
  • Fluid transfer and circulation
  • Cooling system maintenance
  • Industrial process pumping
  • Applications requiring Steel construction
General Description

The Piston,pump, cataloged under National Stock Number 4320-01-397-8545, 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 Dba Pneutronics Div Hydraulic Valve Division. Government technical data includes 3 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 4 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 1 verified substitute exists in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN4320-01-397-8545
Primary Part Number3-1158-6
Item NamePiston,pump
FSC / FSG4320 / 43 — No Item Name Available
ManufacturerParker-Hannifin Corporation Dba Pneutronics Div Hydraulic Valve Division
StatusACTIVE
Surface FinishFINISHED
MaterialSTEEL
Finished Size DesignationSTANDARD
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 1
4320-00-412-36393-1158-18 INTERCHANGEABLE
Pump,reciprocating
Parker-Hannifin Corporation Dba Pneutronics Div Hydraulic Valve Division
Cross-Reference Index
Part NumberManufacturer
3-1158-6 PRIMARY Parker-Hannifin Corporation Dba Pneutronics Div Hydraulic Valve Division (USA)
3-1158-18 Teledyne Industries Inc Teledyne Fluid Systems Republic Business Unit (USA)
3-1158-6 Teledyne Industries Inc Teledyne Fluid Systems Republic Business Unit (USA)
3-1158-18 PIECE 3 Teledyne Industries Inc Teledyne Fluid Systems Republic Business Unit (USA)
Related Parts
4320-00-412-3639INTERCHANGEABLE
PUMP,RECIPROCATING
3-1158-18

Frequently Asked Questions

What is NSN 4320-01-397-8545?

NSN 4320-01-397-8545 is a Piston,pump, manufactured by Parker-Hannifin Corporation Dba Pneutronics Div Hydraulic Valve Division, classified under FSC 4320 (No Item Name Available). Status: active.

What are the part numbers for NSN 4320-01-397-8545?

NSN 4320-01-397-8545 has 4 cross-referenced part numbers: 3-1158-6 (Parker-Hannifin Corporation Dba Pneutronics Div Hydraulic Valve Division), 3-1158-18 (Teledyne Industries Inc Teledyne Fluid Systems Republic Business Unit), 3-1158-6 (Teledyne Industries Inc Teledyne Fluid Systems Republic Business Unit), 3-1158-18 PIECE 3 (Teledyne Industries Inc Teledyne Fluid Systems Republic Business Unit).

What NSN replaces 4320-01-397-8545?

There is 1 known substitute for 4320-01-397-8545: 4320-00-412-3639. Verify interchangeability with system specifications before substitution.

What are the specifications of 3-1158-6?

Key specifications for 3-1158-6: End Item Identification: 4320-00-412-3639; Surface Finish: FINISHED; Material: STEEL; Finished Size Designation: STANDARD. 4 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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