PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

A663Spring,helical,compression

Crane Co Div Valve Div · NSN 5360-00-266-4275 · FSC 5360 · No Item Name Available
Verified by PartsTable
NSN 5360-00-266-4275 — this item is cataloged by the U.S. Government under National Stock Number 5360-00-266-4275. Primary manufacturer part number: A663.
Features
  • Spring,helical,compression — FSC 5360
  • Spring Solid Length: 0.875 INCHES NOMINAL IN
  • Spring Free Outside Diameter: 0.6875 INCHES NOMINAL IN
  • Material: STEEL OVERALL
  • Inside Diameter: 0.4375 INCHES NOMINAL IN
  • Spring Free Length: 1.250 INCHES NOMINAL IN
  • Style Designator: CYLINDRICAL
  • Coil Quantity: 7
Applications
  • Mechanical energy storage
  • Vibration dampening
  • Return mechanism operation
  • Applications requiring Steel Overall construction
General Description

The Spring,helical,compression, cataloged under National Stock Number 5360-00-266-4275, is classified within Federal Supply Class 5360 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Crane Co Div Valve Div. Government technical data includes 9 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. 5 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5360-00-266-4275
Primary Part NumberA663
Item NameSpring,helical,compression
FSC / FSG5360 / 53 — No Item Name Available
ManufacturerCrane Co Div Valve Div
StatusACTIVE
Spring Solid Length0.875 INCHES NOMINAL IN
Spring Free Outside Diameter0.6875 INCHES NOMINAL IN
MaterialSTEEL OVERALL
Inside Diameter0.4375 INCHES NOMINAL IN
Spring Free Length1.250 INCHES NOMINAL IN
Style DesignatorCYLINDRICAL
Coil Quantity7
End StyleSPRING END,SQUARED AND GROUND BOTH ENDS
Coil Helix DirectionLEFT-HAND
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 5
5935-00-258-3821491217 INTERCHANGEABLE
Connector,plug,electrical
Naval Ship Systems Command
5975-00-350-8141717612-6 INTERCHANGEABLE
Mounting Base,tie Down,electrica
Nmc Group, Inc.
6810-00-975-2503 INTERCHANGEABLE
Ammonium Citrate,dibasic
5950-01-125-6325278-0444-040 INTERCHANGEABLE
Transformer,radio Frequency
Rockwell Collins, Inc. Dba Collins Aerospace Government Systems Div Collins Aerospace - Government Systems
6695-01-215-3662 INTERCHANGEABLE
Transducer,motional Pickup
Cross-Reference Index
Part NumberManufacturer
A663 PRIMARY Crane Co Div Valve Div (USA)
Related Parts
5935-00-258-3821INTERCHANGEABLE
CONNECTOR,PLUG,ELECTRICAL
491217
5975-00-350-8141INTERCHANGEABLE
MOUNTING BASE,TIE DOWN,ELECTRICA
717612-6
6810-00-975-2503INTERCHANGEABLE
AMMONIUM CITRATE,DIBASIC
5950-01-125-6325INTERCHANGEABLE
TRANSFORMER,RADIO FREQUENCY
278-0444-040
6695-01-215-3662INTERCHANGEABLE
TRANSDUCER,MOTIONAL PICKUP

Frequently Asked Questions

What is NSN 5360-00-266-4275?

NSN 5360-00-266-4275 is a Spring,helical,compression, manufactured by Crane Co Div Valve Div, classified under FSC 5360 (No Item Name Available). Status: active.

What are the part numbers for NSN 5360-00-266-4275?

NSN 5360-00-266-4275 has 1 cross-referenced part number: A663 (Crane Co Div Valve Div).

What NSN replaces 5360-00-266-4275?

There are 5 known substitutes for 5360-00-266-4275: 5935-00-258-3821, 5975-00-350-8141, 6810-00-975-2503 and 2 more. Verify interchangeability with system specifications before substitution.

What are the specifications of A663?

Key specifications for A663: Spring Solid Length: 0.875 INCHES NOMINAL IN; Spring Free Outside Diameter: 0.6875 INCHES NOMINAL IN; Material: STEEL OVERALL; Inside Diameter: 0.4375 INCHES NOMINAL IN. 9 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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