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681690A1 — SPRING,HELICAL,EXTENSION

✓ Government record, cited
— · COMPONENT
PRODUCT OVERVIEW

681690A1: SPRING,HELICAL,EXTENSION.

The SPRING,HELICAL,EXTENSION is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, end_style: TAPERED END W/ BOLT FIRST END, design_type: CLOSED, bolt_diameter: 0.160 INCHES NOMINAL SECOND END IN, coil_quantity: 18, inside_diameter: 0.507 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 5360-00-604-0760, 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
681690A1
NSN: 5360-00-604-0760
FSC: 5360 — Coil, Flat, Leaf, and Wire Springs
CAGE: 05168 — ELSAG BAILEY INC (USA)
SPECIFICATIONS
materialSTEEL OVERALL
end_styleTAPERED END W/ BOLT FIRST END
design_typeCLOSED
bolt_diameter0.160 INCHES NOMINAL SECOND END IN
coil_quantity18
inside_diameter0.507 INCHES NOMINAL IN
style_designatorCYLINDRICAL
spring_free_length3.125 INCHES NOMINAL IN
coil_helix_directionRIGHT-HAND
spring_free_outside_diameter0.651 INCHES NOMINAL IN
NSN5360-00-604-0760
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available SPRING,HELICAL,EXTENSION TITLE COMPONENT PN 681690A1 MFR SPRING,HELICAL,EXTENSI
KEY FEATURES
•
SPRING FREE OUTSIDE DIAMETER: 0.651 INCHES NOMINAL IN
•
END STYLE: TAPERED END W/ BOLT FIRST END
•
DESIGN TYPE: CLOSED
•
STYLE DESIGNATOR: CYLINDRICAL
•
SPRING FREE LENGTH: 3.125 INCHES NOMINAL IN
•
BOLT DIAMETER: 0.160 INCHES NOMINAL SECOND END IN
•
INSIDE DIAMETER: 0.507 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS
SPRING FREE OUTSIDE DIAMETER0.651 INCHES NOMINAL IN
END STYLETAPERED END W/ BOLT FIRST END
DESIGN TYPECLOSED
STYLE DESIGNATORCYLINDRICAL
SPRING FREE LENGTH3.125 INCHES NOMINAL IN
BOLT DIAMETER0.160 INCHES NOMINAL SECOND END IN
BOLT DIAMETER0.157 INCHES NOMINAL FIRST END IN
INSIDE DIAMETER0.507 INCHES NOMINAL IN
COIL QUANTITY18
COIL HELIX DIRECTIONRIGHT-HAND
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 681690A1?
681690A1 is a SPRING,HELICAL,EXTENSION.
What is the NSN for 681690A1?
681690A1 is cataloged in the U.S. Government catalog under NSN 5360-00-604-0760. 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.