PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

26514Seat,helical Compression Spring

Parker-Hannifin Corporation Dba Control Systems Division · NSN 5340-00-978-3325 · FSC 5340 · No Item Name Available
Verified by PartsTable
NSN 5340-00-978-3325 — this item is cataloged by the U.S. Government under National Stock Number 5340-00-978-3325. Primary manufacturer part number: 26514.
Features
  • Seat,helical Compression Spring — FSC 5340
  • Second Step Length: 0.0750 INCHES NOMINAL IN
  • Design Type: SOLID
  • Distance From End to First Step: 0.3250 INCHES NOMINAL IN
  • FSC Application Data: SERVOCYLINDER,HYDRAULIC
  • End Diameter: 0.4370 INCHES NOMINAL IN
  • Second End Diameter: 0.5000 INCHES NOMINAL IN
  • Surface Treatment: ANODIZE
Applications
  • Mechanical energy storage
  • Vibration dampening
  • Return mechanism operation
  • Applications requiring Aluminum Alloy construction
General Description

The Seat,helical Compression Spring, cataloged under National Stock Number 5340-00-978-3325, is classified within Federal Supply Class 5340 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Parker-Hannifin Corporation Dba Control Systems Division. Government technical data includes 12 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. 6 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active. Unit of issue: EA.

Technical Specifications
ParameterValue
NSN5340-00-978-3325
Primary Part Number26514
Item NameSeat,helical Compression Spring
FSC / FSG5340 / 53 — No Item Name Available
ManufacturerParker-Hannifin Corporation Dba Control Systems Division
StatusACTIVE
Second Step Length0.0750 INCHES NOMINAL IN
Design TypeSOLID
Distance From End to First Step0.3250 INCHES NOMINAL IN
FSC Application DataSERVOCYLINDER,HYDRAULIC
End Diameter0.4370 INCHES NOMINAL IN
Second End Diameter0.5000 INCHES NOMINAL IN
Surface TreatmentANODIZE
MaterialALUMINUM ALLOY
First Step Length0.0750 INCHES NOMINAL IN
Second Step Diameter0.8130 INCHES NOMINAL IN
Bore Diameter0.2830 INCHES NOMINAL IN
First Step Diameter0.6500 INCHES NOMINAL IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Unit of IssueEA
Verified Substitutes 6
5985-00-179-1098 INTERCHANGEABLE
Waveguide Assembly
4720-00-288-9878 INTERCHANGEABLE
Hose,nonmetallic
4720-01-235-355737026514 INTERCHANGEABLE
Hose Assembly,nonmetallic
Klein Products, Inc.
6520-01-352-9546265141 INTERCHANGEABLE
Porcelain,dental
Ceramco Inc
5365-01-561-143926514 INTERCHANGEABLE
Spacer,ring
Fascan International, Inc.
4710-01-641-589026514 INTERCHANGEABLE
Pipe,plastic
United States Plastic Corp
Cross-Reference Index
Part NumberManufacturer
26514 PRIMARY Parker-Hannifin Corporation Dba Control Systems Division (USA)
Related Parts
5985-00-179-1098INTERCHANGEABLE
WAVEGUIDE ASSEMBLY
4720-00-288-9878INTERCHANGEABLE
HOSE,NONMETALLIC
4720-01-235-3557INTERCHANGEABLE
HOSE ASSEMBLY,NONMETALLIC
37026514
6520-01-352-9546INTERCHANGEABLE
PORCELAIN,DENTAL
265141
5365-01-561-1439INTERCHANGEABLE
SPACER,RING
26514
4710-01-641-5890INTERCHANGEABLE
PIPE,PLASTIC
26514

Frequently Asked Questions

What is NSN 5340-00-978-3325?

NSN 5340-00-978-3325 is a Seat,helical Compression Spring, manufactured by Parker-Hannifin Corporation Dba Control Systems Division, classified under FSC 5340 (No Item Name Available). Status: active.

What are the part numbers for NSN 5340-00-978-3325?

NSN 5340-00-978-3325 has 1 cross-referenced part number: 26514 (Parker-Hannifin Corporation Dba Control Systems Division).

What NSN replaces 5340-00-978-3325?

There are 6 known substitutes for 5340-00-978-3325: 5985-00-179-1098, 4720-00-288-9878, 4720-01-235-3557 and 3 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 26514?

Key specifications for 26514: Second Step Length: 0.0750 INCHES NOMINAL IN; Design Type: SOLID; Distance From End to First Step: 0.3250 INCHES NOMINAL IN; FSC Application Data: SERVOCYLINDER,HYDRAULIC. 13 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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