PartsTable TECHNICAL DATA SHEET
AUGUST 2026Technical Data Sheet

FV21-125Spring,helical,compression

Automatic Switch Company Dba Asco · NSN 5360-00-726-4359 · FSC 5360 · No Item Name Available
Verified by PartsTable
NSN 5360-00-726-4359 — this item is cataloged by the U.S. Government under National Stock Number 5360-00-726-4359. Primary manufacturer part number: FV21-125.
Features
  • Spring,helical,compression — FSC 5360
  • End Style: SPRING END,SQUARED AND GROUND BOTH ENDS
  • Spring Free Length: 0.750 INCHES NOMINAL IN
  • Coil Quantity: 9
  • Style Designator: CYLINDRICAL
  • Spring Solid Outside Diameter: 0.565 INCHES NOMINAL IN
  • Bore Diameter: 0.490 INCHES NOMINAL IN
  • Accommodated Rod Diameter: 0.281 INCHES NOMINAL IN
Applications
  • Mechanical energy storage
  • Vibration dampening
  • Return mechanism operation
  • Applications requiring Steel Corrosion Resisting Overall construction
General Description

The Spring,helical,compression, cataloged under National Stock Number 5360-00-726-4359, is classified within Federal Supply Class 5360 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Automatic Switch Company Dba Asco. Government technical data includes 13 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. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5360-00-726-4359
Primary Part NumberFV21-125
Item NameSpring,helical,compression
FSC / FSG5360 / 53 — No Item Name Available
ManufacturerAutomatic Switch Company Dba Asco
StatusACTIVE
End StyleSPRING END,SQUARED AND GROUND BOTH ENDS
Spring Free Length0.750 INCHES NOMINAL IN
Coil Quantity9
Style DesignatorCYLINDRICAL
Spring Solid Outside Diameter0.565 INCHES NOMINAL IN
Bore Diameter0.490 INCHES NOMINAL IN
Accommodated Rod Diameter0.281 INCHES NOMINAL IN
Spring Solid Length0.281 INCHES NOMINAL IN
Spring Deflection Rate3.700 POUNDS PER INCH NOMINAL LBS
MaterialSTEEL CORROSION RESISTING OVERALL
Spring Free Outside Diameter0.490 INCHES NOMINAL IN
Coil Helix DirectionRIGHT-HAND OR LEFT-HAND
Inside Diameter0.440 INCHES NOMINAL IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Cross-Reference Index
Part NumberManufacturer
FV21-125 PRIMARY Automatic Switch Company Dba Asco (USA)
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Frequently Asked Questions

What is NSN 5360-00-726-4359?

NSN 5360-00-726-4359 is a Spring,helical,compression, manufactured by Automatic Switch Company Dba Asco, classified under FSC 5360 (No Item Name Available). Status: active.

What are the part numbers for NSN 5360-00-726-4359?

NSN 5360-00-726-4359 has 1 cross-referenced part number: FV21-125 (Automatic Switch Company Dba Asco).

What are the specifications of FV21-125?

Key specifications for FV21-125: End Style: SPRING END,SQUARED AND GROUND BOTH ENDS; Spring Free Length: 0.750 INCHES NOMINAL IN; Coil Quantity: 9; Style Designator: CYLINDRICAL. 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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