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A3663 — SPRING,HELICAL,EXTENSION

✓ Government record, cited
— · COMPONENT
PRODUCT OVERVIEW

A3663: SPRING,HELICAL,EXTENSION.

The SPRING,HELICAL,EXTENSION is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, end_style: MACHINE LOOP BOTH ENDS, design_type: CLOSED, load_rating: 25.000 POUNDS NOMINAL LBS, coil_quantity: 85, opening_width: 0.250 INCHES NOMINAL BOTH ENDS IN. This part is cataloged in the U.S.

Government catalog under NSN 5360-00-753-3840, indicating validated use in U.S. government and defense logistics supply chains. Available through authorized enterprise resellers and TPM (Third Party Maintenance) channels.

Verify compatibility with your specific system configuration before ordering.

WHERE IT FITS
A3663
NSN: 5360-00-753-3840
FSC: 5360 — Coil, Flat, Leaf, and Wire Springs
CAGE: 78640 — MITSUBISHI CATERPILLAR FORKLIFT AMERICA, INC (USA)
SPECIFICATIONS
materialSTEEL OVERALL
end_styleMACHINE LOOP BOTH ENDS
design_typeCLOSED
load_rating25.000 POUNDS NOMINAL LBS
coil_quantity85
opening_width0.250 INCHES NOMINAL BOTH ENDS IN
style_designatorCYLINDRICAL
spring_free_length7.269 INCHES NOMINAL IN
coil_helix_directionRIGHT-HAND OR LEFT-HAND
spring_deflection_rate9.260 POUNDS PER INCH NOMINAL LBS
spring_length_under_load9.250 INCHES NOMINAL IN
coil_to_hook_inside_length0.500 INCHES NOMINAL BOTH ENDS IN
NSN5360-00-753-3840
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available SPRING,HELICAL,EXTENSION TITLE COMPONENT PN A3663 MFR SPRING,HELICAL,EXTENSI
KEY FEATURES
•
SPRING FREE OUTSIDE DIAMETER: 0.438 INCHES NOMINAL IN
•
LOAD RATING: 25.000 POUNDS NOMINAL LBS
•
END STYLE: MACHINE LOOP BOTH ENDS
•
DESIGN TYPE: CLOSED
•
STYLE DESIGNATOR: CYLINDRICAL
•
OPENING WIDTH: 0.250 INCHES NOMINAL BOTH ENDS IN
•
SPRING FREE LENGTH: 7.269 INCHES NOMINAL IN
•
SPRING DEFLECTION RATE: 9.260 POUNDS PER INCH NOMINAL LBS
TECHNICAL CHARACTERISTICS
SPRING FREE OUTSIDE DIAMETER0.438 INCHES NOMINAL IN
LOAD RATING25.000 POUNDS NOMINAL LBS
END STYLEMACHINE LOOP BOTH ENDS
DESIGN TYPECLOSED
STYLE DESIGNATORCYLINDRICAL
OPENING WIDTH0.250 INCHES NOMINAL BOTH ENDS IN
SPRING FREE LENGTH7.269 INCHES NOMINAL IN
SPRING DEFLECTION RATE9.260 POUNDS PER INCH NOMINAL LBS
COIL TO HOOK INSIDE LENGTH0.500 INCHES NOMINAL BOTH ENDS IN
SPRING LENGTH UNDER LOAD9.250 INCHES NOMINAL IN
OTHER ITEMS IN FSC 5360 — Coil, Flat, Leaf, and Wire Springs
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
5360-00-001-1842 5360-00-001-1945 5360-00-001-2010 5360-00-001-3865 5360-00-001-3950 5360-00-001-4650 5360-00-001-4664 5360-00-001-4703
SUBSTITUTES & CROSS-REFERENCES

No substitute or cross-reference records for this part.

LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Normally procured from the manufacturer (OEM)No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is A3663?
A3663 is a SPRING,HELICAL,EXTENSION.
What is the NSN for A3663?
A3663 is cataloged in the U.S. Government catalog under NSN 5360-00-753-3840. This indicates validated use in U.S. government and defense supply chains.
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✓ PartsTable — the parts reference. Every fact cited to its source.
PartsTable Design LLC · partstable.com
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.
PartsTable commercial catalog: edition Unified commercial catalog snapshot through 2026-09-28, edition date not on file, retrieved 2026-09-28.