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Technical Data Sheet
PartsTable / COMPONENT / 440520
440520 ✓ 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,CONSTANT FORCE is a the manufacturer industrial component. This product is currently in active production with full OEM support. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5360-01-612-2379, 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
440520
NSN: 5360-01-612-2379
FSC: 5360
CAGE: 21439 — CURTISS-WRIGHT FLOW CONTROL SERVICE, LLC DBA ENGINEERED ARRESTING SYSTEMS - ESCO DIV CW FLOW CONTROL SVC LLC DBA (USA)
SPECIFICATIONS
Part Number440520
NSN5360-01-612-2379
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available SPRING,CONSTANT FORCE TITLE COMPONENT PN 440520 MFR SPRING,CONSTANT FORCE
VERIFIED SUBSTITUTES & CROSS-REFERENCES 5
75A10B8Interchangeable
interchangeable cross-reference
interchangeable
516730Interchangeable
interchangeable cross-reference
interchangeable
126918Interchangeable
interchangeable cross-reference
interchangeable
2131-5185Interchangeable
interchangeable cross-reference
interchangeable
502104Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 440520?
440520 is a SPRING,CONSTANT FORCE.
What parts can replace 440520?
There are 5 known substitutes for 440520: 75A10B8, 516730, 126918 and 2 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 440520?
440520 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5360-01-612-2379. 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