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PartsTable / COMPONENT / U8521
U8521 ✓ 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,COMPRESSION is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, end_style: SPRING END,SQUARED AND GROUND BOTH ENDS, load_rating: 0.688 POUNDS NOMINAL LBS, coil_quantity: 10, style_designator: CYLINDRICAL, spring_free_length: 1.193 INCHES NOMINAL IN. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5360-00-321-2740, 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
U8521
NSN: 5360-00-321-2740
FSC: 5360
CAGE: 15434 — CUMMINS INC. (USA)
SPECIFICATIONS
materialSTEEL OVERALL
end_styleSPRING END,SQUARED AND GROUND BOTH ENDS
load_rating0.688 POUNDS NOMINAL LBS
coil_quantity10
style_designatorCYLINDRICAL
spring_free_length1.193 INCHES NOMINAL IN
spring_solid_length0.469 INCHES NOMINAL IN
coil_helix_directionRIGHT-HAND
spring_length_under_load0.469 INCHES NOMINAL IN
accommodated_rod_diameter0.093 INCHES NOMINAL IN
spring_free_outside_diameter0.171 INCHES NOMINAL IN
spring_solid_outside_diameter0.171 INCHES NOMINAL IN
NSN5360-00-321-2740
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available SPRING,HELICAL,COMPRESSION TITLE COMPONENT PN U8521 MFR SPRING,HELICAL,COMPRES
KEY FEATURES
•
COIL HELIX DIRECTION: RIGHT-HAND
•
SPRING SOLID OUTSIDE DIAMETER: 0.171 INCHES NOMINAL IN
•
END STYLE: SPRING END,SQUARED AND GROUND BOTH ENDS
•
SPRING FREE LENGTH: 1.193 INCHES NOMINAL IN
•
COIL QUANTITY: 10
•
SPRING SOLID LENGTH: 0.469 INCHES NOMINAL IN
•
STYLE DESIGNATOR: CYLINDRICAL
•
SPRING LENGTH UNDER LOAD: 0.469 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS (FLIS)
COIL HELIX DIRECTIONRIGHT-HAND
SPRING SOLID OUTSIDE DIAMETER0.171 INCHES NOMINAL IN
END STYLESPRING END,SQUARED AND GROUND BOTH ENDS
SPRING FREE LENGTH1.193 INCHES NOMINAL IN
COIL QUANTITY10
SPRING SOLID LENGTH0.469 INCHES NOMINAL IN
STYLE DESIGNATORCYLINDRICAL
SPRING LENGTH UNDER LOAD0.469 INCHES NOMINAL IN
ACCOMMODATED ROD DIAMETER0.093 INCHES NOMINAL IN
MATERIALSTEEL OVERALL
VERIFIED SUBSTITUTES & CROSS-REFERENCES 9
3134722BInterchangeable
interchangeable cross-reference
interchangeable
852-1Interchangeable
interchangeable cross-reference
interchangeable
830-012Interchangeable
interchangeable cross-reference
interchangeable
0051130-012Interchangeable
interchangeable cross-reference
interchangeable
000-8006-423Interchangeable
interchangeable cross-reference
interchangeable
AS8384Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is U8521?
U8521 is a SPRING,HELICAL,COMPRESSION.
What parts can replace U8521?
There are 9 known substitutes for U8521: 3134722B, 852-1, 830-012 and 6 more. Substitute compatibility should be verified for your specific system.
Is U8521 still available?
U8521 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