PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

60656Seat,helical Compression Spring

Ecolaire Inc Baldwin-Hamilton Co Div · NSN 5340-00-389-9271 · FSC 5340 · No Item Name Available
Verified by PartsTable
NSN 5340-00-389-9271 — this item is cataloged by the U.S. Government under National Stock Number 5340-00-389-9271. Primary manufacturer part number: 60656.
Features
  • Seat,helical Compression Spring — FSC 5340
  • Second Step Diameter: 1.6670 INCHES NOMINAL IN
  • Design Type: SOLID
  • End Diameter: 1.0000 INCHES NOMINAL IN
  • Distance From End to First Step: 0.1970 INCHES NOMINAL IN
  • Bore Taper in Deg: 10.0
  • Style Designator: SEAT
  • Material: STEEL
Applications
  • Mechanical energy storage
  • Vibration dampening
  • Return mechanism operation
  • Applications requiring Steel construction
General Description

The Seat,helical Compression Spring, cataloged under National Stock Number 5340-00-389-9271, is classified within Federal Supply Class 5340 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Ecolaire Inc Baldwin-Hamilton Co Div. Government technical data includes 12 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 2 commercial cross-references from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active. Unit of issue: EA.

Technical Specifications
ParameterValue
NSN5340-00-389-9271
Primary Part Number60656
Item NameSeat,helical Compression Spring
FSC / FSG5340 / 53 — No Item Name Available
ManufacturerEcolaire Inc Baldwin-Hamilton Co Div
StatusACTIVE
Second Step Diameter1.6670 INCHES NOMINAL IN
Design TypeSOLID
End Diameter1.0000 INCHES NOMINAL IN
Distance From End to First Step0.1970 INCHES NOMINAL IN
Bore Taper in Deg10.0
Style DesignatorSEAT
MaterialSTEEL
First Step Diameter1.0670 INCHES NOMINAL IN
Third Step Diameter2.1950 INCHES NOMINAL IN
Bore Diameter1.0050 INCHES NOMINAL IN
First Step Length0.1650 INCHES NOMINAL IN
Second Step Length0.1400 INCHES NOMINAL IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Unit of IssueEA
Verified Substitutes 12
5305-00-010-0138100138 INTERCHANGEABLE
Screw,cap,hexagon Head
Rolls-Royce Solutions America Inc
5330-00-286-8149 INTERCHANGEABLE
Seal,plain Encased
5110-00-796-684760656 INTERCHANGEABLE
Punch,nibbling Tool
Adel Tool Co
3120-00-950-1874590-356 INTERCHANGEABLE
Bushing,sleeve
Steward Machine Co Inc
2825-00-950-1881 INTERCHANGEABLE
Collar,blower
3110-00-950-1887 INTERCHANGEABLE
Bearing,blower
2825-00-950-1888591-578AP INTERCHANGEABLE
Sleeve,blower
Acme Products & Engineering Inc
5365-00-950-1891 INTERCHANGEABLE
Bushing,blower
4820-00-950-1894591-603 INTERCHANGEABLE
Stem,fluid Valve
Steward Machine Co Inc
4820-00-950-1898591-611 INTERCHANGEABLE
Stem,plug,blower
Steward Machine Co Inc
Cross-Reference Index
Part NumberManufacturer
60656 Ecolaire Inc Baldwin-Hamilton Co Div (USA)
HR20109 Ecolaire Inc Baldwin-Hamilton Co Div (USA)
Related Parts
5305-00-010-0138INTERCHANGEABLE
SCREW,CAP,HEXAGON HEAD
100138
5330-00-286-8149INTERCHANGEABLE
SEAL,PLAIN ENCASED
5110-00-796-6847INTERCHANGEABLE
PUNCH,NIBBLING TOOL
60656
3120-00-950-1874INTERCHANGEABLE
BUSHING,SLEEVE
590-356
2825-00-950-1881INTERCHANGEABLE
COLLAR,BLOWER
3110-00-950-1887INTERCHANGEABLE
BEARING,BLOWER
2825-00-950-1888INTERCHANGEABLE
SLEEVE,BLOWER
591-578AP
5365-00-950-1891INTERCHANGEABLE
BUSHING,BLOWER
4820-00-950-1894INTERCHANGEABLE
STEM,FLUID VALVE
591-603
4820-00-950-1898INTERCHANGEABLE
STEM,PLUG,BLOWER
591-611
5330-00-950-1911INTERCHANGEABLE
SEAL,BLOWER,STEAM TURBINE
5330-00-956-1527INTERCHANGEABLE
SEAL RING,METAL

Frequently Asked Questions

What is NSN 5340-00-389-9271?

NSN 5340-00-389-9271 is a Seat,helical Compression Spring, manufactured by Ecolaire Inc Baldwin-Hamilton Co Div, classified under FSC 5340 (No Item Name Available). Status: active.

What are the part numbers for NSN 5340-00-389-9271?

NSN 5340-00-389-9271 has 2 cross-referenced part numbers: 60656 (Ecolaire Inc Baldwin-Hamilton Co Div), HR20109 (Ecolaire Inc Baldwin-Hamilton Co Div).

What NSN replaces 5340-00-389-9271?

There are 12 known substitutes for 5340-00-389-9271: 5305-00-010-0138, 5330-00-286-8149, 5110-00-796-6847 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 60656?

Key specifications for 60656: Second Step Diameter: 1.6670 INCHES NOMINAL IN; Overall Height: 0.7020 INCHES NOMINAL IN; Design Type: SOLID; End Diameter: 1.0000 INCHES NOMINAL IN. 14 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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