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500-3-181 — SPRING,HELICAL,EXTENSION

✓ Government record, cited
— · COMPONENT
PRODUCT OVERVIEW

500-3-181: SPRING,HELICAL,EXTENSION.

The SPRING,HELICAL,EXTENSION is a the manufacturer industrial component. Key specifications include material: STEEL COMP 302 OVERALL, end_style: SHORT TWISTED HOOK BOTH ENDS, design_type: CLOSED, hook_radius: 0.0625 INCHES NOMINAL BOTH ENDS IN, coil_quantity: 11, inside_diameter: 0.101 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 5360-00-020-2940, 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
500-3-181
NSN: 5360-00-020-2940
FSC: 5360 — Coil, Flat, Leaf, and Wire Springs
CAGE: 07421 — L3HARRIS INTERSTATE ELECTRONICS CORPORATION (USA)
SPECIFICATIONS
materialSTEEL COMP 302 OVERALL
end_styleSHORT TWISTED HOOK BOTH ENDS
design_typeCLOSED
hook_radius0.0625 INCHES NOMINAL BOTH ENDS IN
coil_quantity11
inside_diameter0.101 INCHES NOMINAL IN
style_designatorCYLINDRICAL
surface_treatmentPASSIVATE OVERALL
spring_free_length0.399 INCHES NOMINAL IN
coil_helix_directionRIGHT-HAND OR LEFT-HAND
spring_free_outside_diameter0.125 INCHES NOMINAL IN
material_document_and_classificationQQ-W-423,COND B FED SPEC SINGLE MATERIAL RESPONSE OVERALL
NSN5360-00-020-2940
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available SPRING,HELICAL,EXTENSION TITLE COMPONENT PN 500-3-181 MFR SPRING,HELICAL,EXTENSI
KEY FEATURES
•
SPRING FREE OUTSIDE DIAMETER: 0.125 INCHES NOMINAL IN
•
END STYLE: SHORT TWISTED HOOK BOTH ENDS
•
DESIGN TYPE: CLOSED
•
STYLE DESIGNATOR: CYLINDRICAL
•
MATERIAL DOCUMENT AND CLASSIFICATION: QQ-W-423,COND B FED SPEC SINGLE MATERIAL RESPONSE OVERALL
•
SPRING FREE LENGTH: 0.399 INCHES NOMINAL IN
•
INSIDE DIAMETER: 0.101 INCHES NOMINAL IN
•
COIL QUANTITY: 11
TECHNICAL CHARACTERISTICS
SPRING FREE OUTSIDE DIAMETER0.125 INCHES NOMINAL IN
END STYLESHORT TWISTED HOOK BOTH ENDS
DESIGN TYPECLOSED
STYLE DESIGNATORCYLINDRICAL
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-W-423,COND B FED SPEC SINGLE MATERIAL RESPONSE OVERALL
SPRING FREE LENGTH0.399 INCHES NOMINAL IN
INSIDE DIAMETER0.101 INCHES NOMINAL IN
COIL QUANTITY11
SURFACE TREATMENTPASSIVATE OVERALL
COIL HELIX DIRECTIONRIGHT-HAND OR LEFT-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
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 500-3-181?
500-3-181 is a SPRING,HELICAL,EXTENSION.
What is the NSN for 500-3-181?
500-3-181 is cataloged in the U.S. Government catalog under NSN 5360-00-020-2940. 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.