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Technical Data Sheet
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4457-021 — BUSHING,SLEEVE

✓ Government record, cited
— · BALL BEARING
PRODUCT OVERVIEW

4457-021: BUSHING,SLEEVE.

The BUSHING,SLEEVE is a the manufacturer industrial component. Key specifications include material: NICKEL ALLOY 718 OVERALL, material_document_and_classification: AMS5664 ASSN STD SINGLE MATERIAL RESPONSE OVERALL. This part is cataloged in the U.S.

Government catalog under NSN 3120-01-235-4644, 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
4457-021
NSN: 3120-01-235-4644
NIINs: 012354644, 016132370
FSC: 3120 — Bearings, Plain, Unmounted
CAGE: 43689 — HUNTINGTON INGALLS INC DIV NEWPORT NEWS SHIPBUILDING (USA)
SPECIFICATIONS
materialNICKEL ALLOY 718 OVERALL
material_document_and_classificationAMS5664 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
NSN3120-01-235-4644
COMPONENT DIAGRAM
BALL BEARING — SEAL TYPE DETERMINES MAINTENANCE OD: — · BORE: — · WIDTH: — SEAL: Open · PN: 4457-021 · OEM ⚠ VERIFY BEFORE ORDERING ABEC grade: higher = tighter tolerance = higher cost. ABEC-1 is standard, ABEC-7+ for precision spindles. Open, shielded (ZZ), and sealed (2RS) versions have different max RPM ratings ✓ BROKER TIP 2RS = sealed for life (no maintenance). ZZ = shielded, re-greaseable. Open = must lubricate on install. Common interchange: 6205-2RS = 6205-2RSR = 6205-DDU (same bearing, different suffix) PARTSTABLE TECHNICAL DRAWING — NOT TO SCALE
KEY FEATURES
•
MATERIAL DOCUMENT AND CLASSIFICATION: AMS5664 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
•
MATERIAL: NICKEL ALLOY 718 OVERALL
TECHNICAL CHARACTERISTICS
MATERIAL DOCUMENT AND CLASSIFICATIONAMS5664 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
MATERIALNICKEL ALLOY 718 OVERALL
SUBSTITUTES & CROSS-REFERENCES 7
6503-86 PIECEReference document
Same NSN cross-reference
Reference document — Secondary reference
6503-86 ITEM 288Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
6503-85Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
4457023 ITEM 288Reference document
Same NSN cross-reference
Reference document — Secondary reference
4457023Reference document
Same NSN cross-reference
Reference document — Secondary reference
6503-86Reference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusCancelled· U.S. Government catalog
Acquisition advice: Insurance item — stocked against contingency demandNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 4457-021?
4457-021 is a BUSHING,SLEEVE.
What parts can replace 4457-021?
There are 7 known substitutes for 4457-021: 6503-86 PIECE, 6503-86 ITEM 288, 6503-85 and 4 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 4457-021?
4457-021 is cataloged in the U.S. Government catalog under NSN 3120-01-235-4644. 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.