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521522573 — SPRING,HELICAL,EXTENSION

✓ Government record, cited
— · COMPONENT
PRODUCT OVERVIEW

521522573: SPRING,HELICAL,EXTENSION.

The SPRING,HELICAL,EXTENSION is a the manufacturer industrial component. Key specifications include inside_diameter: 0.091 INCHES NOMINAL IN, style_designator: CYLINDRICAL, spring_free_length: 0.688 INCHES NOMINAL IN, spring_free_outside_diameter: 0.125 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 5360-00-309-0809, 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
521522573
NSN: 5360-00-309-0809
FSC: 5360 — Coil, Flat, Leaf, and Wire Springs
CAGE: 57712 — TELEMECHANICS INC (USA)
SPECIFICATIONS
inside_diameter0.091 INCHES NOMINAL IN
style_designatorCYLINDRICAL
spring_free_length0.688 INCHES NOMINAL IN
spring_free_outside_diameter0.125 INCHES NOMINAL IN
NSN5360-00-309-0809
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available SPRING,HELICAL,EXTENSION TITLE COMPONENT PN 521522573 MFR SPRING,HELICAL,EXTENSI
KEY FEATURES
•
SPRING FREE OUTSIDE DIAMETER: 0.125 INCHES NOMINAL IN
•
STYLE DESIGNATOR: CYLINDRICAL
•
SPRING FREE LENGTH: 0.688 INCHES NOMINAL IN
•
INSIDE DIAMETER: 0.091 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS
SPRING FREE OUTSIDE DIAMETER0.125 INCHES NOMINAL IN
STYLE DESIGNATORCYLINDRICAL
SPRING FREE LENGTH0.688 INCHES NOMINAL IN
INSIDE DIAMETER0.091 INCHES NOMINAL IN
SUBSTITUTES & CROSS-REFERENCES 1
152257Reference document
Same NSN cross-reference
Reference document — Secondary reference
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 521522573?
521522573 is a SPRING,HELICAL,EXTENSION.
What parts can replace 521522573?
There is 1 known substitute for 521522573: 152257. Substitute compatibility should be verified for your specific system.
What is the NSN for 521522573?
521522573 is cataloged in the U.S. Government catalog under NSN 5360-00-309-0809. 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.