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D3021-0 — RING,RETAINING

✓ Government record, cited
— · COMPONENT
PRODUCT OVERVIEW

D3021-0: RING,RETAINING.

The RING,RETAINING is a the manufacturer industrial component. Key specifications include material: STEEL, end_style: 90 DEGREE PARALLEL, ring_style: STRAIGHT GAP, usage_design: EXTERNAL, coil_quantity: 12, inside_diameter: 0.205 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 5360-00-714-5221, 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
D3021-0
NSN: 5360-00-714-5221
NIINs: 007145221, 009648410
FSC: 5360 — Coil, Flat, Leaf, and Wire Springs
CAGE: 23926 — KOMATSU AMERICA CORPORATION (USA)
SPECIFICATIONS
materialSTEEL
end_style90 DEGREE PARALLEL
ring_styleSTRAIGHT GAP
usage_designEXTERNAL
coil_quantity12
inside_diameter0.205 INCHES NOMINAL IN
major_thickness0.015 INCHES NOMINAL IN
outside_diameter0.255 INCHES NOMINAL IN
style_designatorCYLINDRICAL
surface_treatmentCADMIUM
spring_free_length3.000 INCHES NOMINAL IN
spring_solid_length1.875 INCHES NOMINAL IN
NSN5360-00-714-5221
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available RING,RETAINING TITLE COMPONENT PN D3021-0 MFR RING,RETAINING
KEY FEATURES
•
SPRING FREE OUTSIDE DIAMETER: 0.937 INCHES NOMINAL IN
•
END STYLE: SPRING END,SQUARED AND GROUND BOTH ENDS
•
SPRING SOLID LENGTH: 1.875 INCHES NOMINAL IN
•
STYLE DESIGNATOR: CYLINDRICAL
•
SPRING FREE LENGTH: 3.000 INCHES NOMINAL IN
•
SPRING DEFLECTION RATE: 172.000 POUNDS PER INCH NOMINAL LBS
•
INSIDE DIAMETER: 0.625 INCHES NOMINAL IN
•
COIL QUANTITY: 12
TECHNICAL CHARACTERISTICS
SPRING FREE OUTSIDE DIAMETER0.937 INCHES NOMINAL IN
END STYLESPRING END,SQUARED AND GROUND BOTH ENDS
SPRING SOLID LENGTH1.875 INCHES NOMINAL IN
STYLE DESIGNATORCYLINDRICAL
SPRING FREE LENGTH3.000 INCHES NOMINAL IN
SPRING DEFLECTION RATE172.000 POUNDS PER INCH NOMINAL LBS
INSIDE DIAMETER0.625 INCHES NOMINAL IN
COIL QUANTITY12
COIL HELIX DIRECTIONRIGHT-HAND
MATERIALSTEEL OVERALL
SUBSTITUTES & CROSS-REFERENCES 1
30210Reference document
Same NSN cross-reference
Reference document — Design control — primary reference
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Normally procured from the manufacturer (OEM)No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is D3021-0?
D3021-0 is a RING,RETAINING.
What parts can replace D3021-0?
There is 1 known substitute for D3021-0: 30210. Substitute compatibility should be verified for your specific system.
What is the NSN for D3021-0?
D3021-0 is cataloged in the U.S. Government catalog under NSN 5360-00-714-5221. 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.