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568K172 ✓ 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,TORSION is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, inside_diameter: 0.810 INCHES NOMINAL IN, style_designator: SINGLE TORSION RIGHT HAND, spring_free_length: 2.095 INCHES NOMINAL IN, spring_free_outside_diameter: 1.000 INCHES NOMINAL IN. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5360-00-321-5835, 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
568K172
NSN: 5360-00-321-5835
FSC: 5360
CAGE: 66821 — YALE SECURITY INC. DBA NORTON DOOR CONTROL (USA)
SPECIFICATIONS
materialSTEEL OVERALL
inside_diameter0.810 INCHES NOMINAL IN
style_designatorSINGLE TORSION RIGHT HAND
spring_free_length2.095 INCHES NOMINAL IN
spring_free_outside_diameter1.000 INCHES NOMINAL IN
NSN5360-00-321-5835
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available SPRING,HELICAL,TORSION TITLE COMPONENT PN 568K172 MFR SPRING,HELICAL,TORSION
KEY FEATURES
•
SPRING FREE OUTSIDE DIAMETER: 1.000 INCHES NOMINAL IN
•
MATERIAL: STEEL OVERALL
•
INSIDE DIAMETER: 0.810 INCHES NOMINAL IN
•
STYLE DESIGNATOR: SINGLE TORSION RIGHT HAND
•
SPRING FREE LENGTH: 2.095 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS (FLIS)
SPRING FREE OUTSIDE DIAMETER1.000 INCHES NOMINAL IN
MATERIALSTEEL OVERALL
INSIDE DIAMETER0.810 INCHES NOMINAL IN
STYLE DESIGNATORSINGLE TORSION RIGHT HAND
SPRING FREE LENGTH2.095 INCHES NOMINAL IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 27
325-8Interchangeable
interchangeable cross-reference
interchangeable
FFB571TYPEA2Interchangeable
interchangeable cross-reference
interchangeable
USAF325-8Interchangeable
interchangeable cross-reference
interchangeable
AC5261-1Interchangeable
interchangeable cross-reference
interchangeable
3N135PC6Interchangeable
interchangeable cross-reference
interchangeable
3N74PC325Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 568K172?
568K172 is a SPRING,HELICAL,TORSION.
What parts can replace 568K172?
There are 27 known substitutes for 568K172: 325-8, FFB571TYPEA2, USAF325-8 and 24 more. Substitute compatibility should be verified for your specific system.
Is 568K172 still available?
568K172 is currently cancelled.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026