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51A7564 ✓ Verified by PartsTable
— · COMPONENT
WHAT YOU NEED TO KNOW
Verify manufacturer and server generation compatibility Check if Option PN or Spare PN — same part, different channel
Confirm exact part number — similar PNs may be different parts
PRODUCT OVERVIEW

The SPRING,HELICAL,EXTENSION is a the manufacturer industrial component. Key specifications include material: COPPER ALLOY 511 OVERALL, end_style: SHORT TWISTED HOOK BOTH ENDS, design_type: CLOSED, hook_radius: 0.165 INCHES NOMINAL BOTH ENDS IN, coil_quantity: 54, inside_diameter: 0.284 INCHES NOMINAL IN. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5360-00-603-7463, 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
51A7564
NSN: 5360-00-603-7463
FSC: 5360
CAGE: 80049 — DEPARTMENT OF THE AIR FORCE (USA)
SPECIFICATIONS
materialCOPPER ALLOY 511 OVERALL
end_styleSHORT TWISTED HOOK BOTH ENDS
design_typeCLOSED
hook_radius0.165 INCHES NOMINAL BOTH ENDS IN
coil_quantity54
inside_diameter0.284 INCHES NOMINAL IN
style_designatorCYLINDRICAL
spring_free_length3.188 INCHES MINIMUM AND 3.312 INCHES MAXIMUM IN
coil_helix_directionRIGHT-HAND OR LEFT-HAND
spring_free_outside_diameter0.375 INCHES NOMINAL IN
NSN5360-00-603-7463
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available SPRING,HELICAL,EXTENSION TITLE COMPONENT PN 51A7564 MFR SPRING,HELICAL,EXTENSI
KEY FEATURES
•
COIL HELIX DIRECTION: RIGHT-HAND OR LEFT-HAND
•
END STYLE: SHORT TWISTED HOOK BOTH ENDS
•
COIL QUANTITY: 54
•
STYLE DESIGNATOR: CYLINDRICAL
•
MATERIAL: COPPER ALLOY 511 OVERALL
•
DESIGN TYPE: CLOSED
•
SPRING FREE OUTSIDE DIAMETER: 0.375 INCHES NOMINAL IN
•
INSIDE DIAMETER: 0.284 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS (FLIS)
COIL HELIX DIRECTIONRIGHT-HAND OR LEFT-HAND
END STYLESHORT TWISTED HOOK BOTH ENDS
COIL QUANTITY54
STYLE DESIGNATORCYLINDRICAL
MATERIALCOPPER ALLOY 511 OVERALL
DESIGN TYPECLOSED
SPRING FREE OUTSIDE DIAMETER0.375 INCHES NOMINAL IN
INSIDE DIAMETER0.284 INCHES NOMINAL IN
SPRING FREE LENGTH3.188 INCHES MINIMUM AND 3.312 INCHES MAXIMUM IN
HOOK RADIUS0.165 INCHES NOMINAL BOTH ENDS IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 5
CC0106-05Interchangeable
interchangeable cross-reference
interchangeable
8354-5Interchangeable
interchangeable cross-reference
interchangeable
21-0520-05Interchangeable
interchangeable cross-reference
interchangeable
M400/C/UInterchangeable
interchangeable cross-reference
interchangeable
MH400/C/UInterchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 51A7564?
51A7564 is a SPRING,HELICAL,EXTENSION.
What parts can replace 51A7564?
There are 5 known substitutes for 51A7564: CC0106-05, 8354-5, 21-0520-05 and 2 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 51A7564?
51A7564 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5360-00-603-7463. This indicates validated use in U.S. government and defense supply chains.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026