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A31812 — SPRING,HELICAL,EXTENSION

✓ Government record, cited
— · COMPONENT
PRODUCT OVERVIEW

A31812: SPRING,HELICAL,EXTENSION.

The SPRING,HELICAL,EXTENSION is a the manufacturer industrial component. Key specifications include material: NICKEL ALLOY OVERALL, end_style: SHORT TWISTED HOOK BOTH ENDS, design_type: CLOSED, hook_radius: 0.145 INCHES NOMINAL BOTH ENDS IN, inside_diameter: 0.290 INCHES NOMINAL IN, style_designator: CYLINDRICAL. This part is cataloged in the U.S.

Government catalog under NSN 5360-00-070-4661, 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
A31812
NSN: 5360-00-070-4661
FSC: 5360 — Coil, Flat, Leaf, and Wire Springs
CAGE: 77842 — EATON CORPORATION DBA EATON INOAC DIV EATON (USA)
SPECIFICATIONS
materialNICKEL ALLOY OVERALL
end_styleSHORT TWISTED HOOK BOTH ENDS
design_typeCLOSED
hook_radius0.145 INCHES NOMINAL BOTH ENDS IN
inside_diameter0.290 INCHES NOMINAL IN
style_designatorCYLINDRICAL
spring_free_length63.700 INCHES MINIMUM AND 63.720 INCHES MAXIMUM IN
coil_helix_directionRIGHT-HAND OR LEFT-HAND
coil_to_hook_inside_length0.290 INCHES NOMINAL BOTH ENDS IN
spring_free_outside_diameter0.500 INCHES NOMINAL IN
NSN5360-00-070-4661
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available SPRING,HELICAL,EXTENSION TITLE COMPONENT PN A31812 MFR SPRING,HELICAL,EXTENSI
KEY FEATURES
•
SPRING FREE OUTSIDE DIAMETER: 0.500 INCHES NOMINAL IN
•
END STYLE: SHORT TWISTED HOOK BOTH ENDS
•
DESIGN TYPE: CLOSED
•
STYLE DESIGNATOR: CYLINDRICAL
•
SPRING FREE LENGTH: 63.700 INCHES MINIMUM AND 63.720 INCHES MAXIMUM IN
•
COIL TO HOOK INSIDE LENGTH: 0.290 INCHES NOMINAL BOTH ENDS IN
•
INSIDE DIAMETER: 0.290 INCHES NOMINAL IN
•
COIL HELIX DIRECTION: RIGHT-HAND OR LEFT-HAND
TECHNICAL CHARACTERISTICS
SPRING FREE OUTSIDE DIAMETER0.500 INCHES NOMINAL IN
END STYLESHORT TWISTED HOOK BOTH ENDS
DESIGN TYPECLOSED
STYLE DESIGNATORCYLINDRICAL
SPRING FREE LENGTH63.700 INCHES MINIMUM AND 63.720 INCHES MAXIMUM IN
COIL TO HOOK INSIDE LENGTH0.290 INCHES NOMINAL BOTH ENDS IN
INSIDE DIAMETER0.290 INCHES NOMINAL IN
COIL HELIX DIRECTIONRIGHT-HAND OR LEFT-HAND
MATERIALNICKEL ALLOY OVERALL
HOOK RADIUS0.145 INCHES NOMINAL BOTH ENDS 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: Semi-active item — no replacement plannedNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is A31812?
A31812 is a SPRING,HELICAL,EXTENSION.
What is the NSN for A31812?
A31812 is cataloged in the U.S. Government catalog under NSN 5360-00-070-4661. 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.