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Technical Data Sheet
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4020039 — BUSHING,SLEEVE

✓ Government record, cited
— · BALL BEARING
PRODUCT OVERVIEW

4020039: BUSHING,SLEEVE.

The BUSHING,SLEEVE is a the manufacturer industrial component. Key specifications include material: STEEL, special_features: WARNING LABEL, DANGER ROTATING PARTS, KEEP HANDS CLEAR, securing_device_type: NONSPECIFIC, end_item_identification: 2350-01-619-5649, part_name_assigned_by_controlling_agency: FLYWHEEL, COVER MODIFIED. This part is cataloged in the U.S.

Government catalog under NSN 3120-00-345-6131, 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
4020039
NSN: 3120-00-345-6131
NIINs: 003456131, 016764214
FSC: 3120 — Bearings, Plain, Unmounted
CAGE: 77445 — RTX CORPORATION DBA PRATT & WHITNEY DIV PRATT &WHITNEY (USA)
SPECIFICATIONS
materialSTEEL
special_featuresWARNING LABEL, DANGER ROTATING PARTS, KEEP HANDS CLEAR
securing_device_typeNONSPECIFIC
end_item_identification2350-01-619-5649
part_name_assigned_by_controlling_agencyFLYWHEEL, COVER MODIFIED
NSN3120-00-345-6131
COMPONENT DIAGRAM
BALL BEARING — SEAL TYPE DETERMINES MAINTENANCE OD: — · BORE: — · WIDTH: — SEAL: Open · PN: 4020039 · 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
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CORNER SHAPE: SQUARE ALL CORNERS
•
BODY OUTSIDE DIAMETER: 0.7930 INCHES MINIMUM AND 0.7935 INCHES MAXIMUM IN
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STYLE DESIGNATOR: SOLID, PLAIN, NO OUTSIDE FLANGES
•
BODY INSIDE DIAMETER: 0.6460 INCHES MINIMUM AND 0.6480 INCHES MAXIMUM IN
•
MATERIAL: CARBON OVERALL
TECHNICAL CHARACTERISTICS
CORNER SHAPESQUARE ALL CORNERS
BODY OUTSIDE DIAMETER0.7930 INCHES MINIMUM AND 0.7935 INCHES MAXIMUM IN
STYLE DESIGNATORSOLID, PLAIN, NO OUTSIDE FLANGES
OVERALL LENGTH0.5120 INCHES MINIMUM AND 0.5140 INCHES MAXIMUM IN
BODY INSIDE DIAMETER0.6460 INCHES MINIMUM AND 0.6480 INCHES MAXIMUM IN
MATERIALCARBON OVERALL
SUBSTITUTES & CROSS-REFERENCES 1
4056308Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Insurance item — stocked against contingency demandNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 4020039?
4020039 is a BUSHING,SLEEVE.
What parts can replace 4020039?
There is 1 known substitute for 4020039: 4056308. Substitute compatibility should be verified for your specific system.
What is the NSN for 4020039?
4020039 is cataloged in the U.S. Government catalog under NSN 3120-00-345-6131. 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.