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BA19542 — SPRING,HELICAL,EXTENSION

✓ Government record, cited
— · COMPONENT
PRODUCT OVERVIEW

BA19542: SPRING,HELICAL,EXTENSION.

The SPRING,HELICAL,EXTENSION is a the manufacturer industrial component. Key specifications include material: COPPER ALLOY OVERALL, end_style: MACHINE LOOP BOTH ENDS, design_type: CLOSED, hook_radius: 0.250 INCHES NOMINAL BOTH ENDS IN, coil_quantity: 17-3/4, inside_diameter: 0.420 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 5360-00-664-9237, 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
BA19542
NSN: 5360-00-664-9237
FSC: 5360 — Coil, Flat, Leaf, and Wire Springs
CAGE: 64959 — AMERICAN TELEPHONE AND TELEGRAPH CO (USA)
SPECIFICATIONS
materialCOPPER ALLOY OVERALL
end_styleMACHINE LOOP BOTH ENDS
design_typeCLOSED
hook_radius0.250 INCHES NOMINAL BOTH ENDS IN
coil_quantity17-3/4
inside_diameter0.420 INCHES NOMINAL IN
style_designatorCYLINDRICAL
spring_free_length1.875 INCHES NOMINAL IN
coil_helix_directionLEFT-HAND
spring_free_outside_diameter0.500 INCHES NOMINAL IN
NSN5360-00-664-9237
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available SPRING,HELICAL,EXTENSION TITLE COMPONENT PN BA19542 MFR SPRING,HELICAL,EXTENSI
KEY FEATURES
•
SPRING FREE OUTSIDE DIAMETER: 0.500 INCHES NOMINAL IN
•
END STYLE: MACHINE LOOP BOTH ENDS
•
DESIGN TYPE: CLOSED
•
STYLE DESIGNATOR: CYLINDRICAL
•
SPRING FREE LENGTH: 1.875 INCHES NOMINAL IN
•
INSIDE DIAMETER: 0.420 INCHES NOMINAL IN
•
COIL QUANTITY: 17-3/4
•
COIL HELIX DIRECTION: LEFT-HAND
TECHNICAL CHARACTERISTICS
SPRING FREE OUTSIDE DIAMETER0.500 INCHES NOMINAL IN
END STYLEMACHINE LOOP BOTH ENDS
DESIGN TYPECLOSED
STYLE DESIGNATORCYLINDRICAL
SPRING FREE LENGTH1.875 INCHES NOMINAL IN
INSIDE DIAMETER0.420 INCHES NOMINAL IN
COIL QUANTITY17-3/4
COIL HELIX DIRECTIONLEFT-HAND
MATERIALCOPPER ALLOY OVERALL
HOOK RADIUS0.250 INCHES NOMINAL BOTH ENDS IN
SUBSTITUTES & CROSS-REFERENCES 1
66733Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Semi-active item — no replacement plannedNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is BA19542?
BA19542 is a SPRING,HELICAL,EXTENSION.
What parts can replace BA19542?
There is 1 known substitute for BA19542: 66733. Substitute compatibility should be verified for your specific system.
What is the NSN for BA19542?
BA19542 is cataloged in the U.S. Government catalog under NSN 5360-00-664-9237. 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.