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CB-644-4 — SPRING,HELICAL,COMPRESSION

✓ Government record, cited
— · COMPONENT
PRODUCT OVERVIEW

CB-644-4: SPRING,HELICAL,COMPRESSION.

The SPRING,HELICAL,COMPRESSION is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, end_style: SPRING END,SQUARED BOTH ENDS, inside_diameter: 0.416 INCHES NOMINAL IN, style_designator: CYLINDRICAL, spring_free_length: 1.750 INCHES NOMINAL IN, coil_helix_direction: LEFT-HAND. This part is cataloged in the U.S.

Government catalog under NSN 5360-00-797-8224, 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
CB-644-4
NSN: 5360-00-797-8224
FSC: 5360 — Coil, Flat, Leaf, and Wire Springs
CAGE: 55921 — CURTIS-TOLEDO, INC. (USA)
SPECIFICATIONS
materialSTEEL OVERALL
end_styleSPRING END,SQUARED BOTH ENDS
coil_quantity8
inside_diameter0.416 INCHES NOMINAL IN
style_designatorCYLINDRICAL
spring_free_length1.750 INCHES NOMINAL IN
coil_helix_directionLEFT-HAND
spring_free_outside_diameter0.510 INCHES NOMINAL IN
spring_solid_outside_diameter0.510 INCHES NOMINAL IN
NSN5360-00-797-8224
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available SPRING,HELICAL,COMPRESSION TITLE COMPONENT PN CB-644-4 MFR SPRING,HELICAL,COMPRES
KEY FEATURES
•
SPRING FREE OUTSIDE DIAMETER: 0.510 INCHES NOMINAL IN
•
END STYLE: SPRING END,SQUARED BOTH ENDS
•
STYLE DESIGNATOR: CYLINDRICAL
•
SPRING FREE LENGTH: 1.750 INCHES NOMINAL IN
•
INSIDE DIAMETER: 0.416 INCHES NOMINAL IN
•
SPRING SOLID OUTSIDE DIAMETER: 0.510 INCHES NOMINAL IN
•
COIL QUANTITY: 8
•
COIL HELIX DIRECTION: LEFT-HAND
TECHNICAL CHARACTERISTICS
SPRING FREE OUTSIDE DIAMETER0.510 INCHES NOMINAL IN
END STYLESPRING END,SQUARED BOTH ENDS
STYLE DESIGNATORCYLINDRICAL
SPRING FREE LENGTH1.750 INCHES NOMINAL IN
INSIDE DIAMETER0.416 INCHES NOMINAL IN
SPRING SOLID OUTSIDE DIAMETER0.510 INCHES NOMINAL IN
COIL QUANTITY8
COIL HELIX DIRECTIONLEFT-HAND
MATERIALSTEEL OVERALL
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 1
40R87Reference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Terminal item — stock exhausted; no further procurementNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is CB-644-4?
CB-644-4 is a SPRING,HELICAL,COMPRESSION.
What parts can replace CB-644-4?
There is 1 known substitute for CB-644-4: 40R87. Substitute compatibility should be verified for your specific system.
What is the NSN for CB-644-4?
CB-644-4 is cataloged in the U.S. Government catalog under NSN 5360-00-797-8224. 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.