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4020640 — BEARING,PLAIN,SPHERICAL

✓ Government record, cited
— · BALL BEARING
PRODUCT OVERVIEW

4020640: BEARING,PLAIN,SPHERICAL.

The BEARING,PLAIN,SPHERICAL is a the manufacturer industrial component. Key specifications include material: NICKEL ALLOY OVERALL, overall_length: 0.6150 INCHES MINIMUM AND 0.6250 INCHES MAXIMUM IN, body_inside_diameter: 0.4480 INCHES MINIMUM AND 0.4490 INCHES MAXIMUM IN, spherical_body_diameter: 0.8790 INCHES MINIMUM AND 0.8795 INCHES MAXIMUM IN, extension_outside_diameter: 0.6400 INCHES MINIMUM AND 0.6500 INCHES MAXIMUM IN, material_document_and_classification: AMS 5663 ASSN STD SINGLE MATERIAL RESPONSE OVERALL. This part is cataloged in the U.S.

Government catalog under NSN 3120-00-352-7645, 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
4020640
NSN: 3120-00-352-7645
FSC: 3120 — Bearings, Plain, Unmounted
CAGE: 77445 — RTX CORPORATION DBA PRATT & WHITNEY DIV PRATT &WHITNEY (USA)
SPECIFICATIONS
materialNICKEL ALLOY OVERALL
overall_length0.6150 INCHES MINIMUM AND 0.6250 INCHES MAXIMUM IN
body_inside_diameter0.4480 INCHES MINIMUM AND 0.4490 INCHES MAXIMUM IN
spherical_body_diameter0.8790 INCHES MINIMUM AND 0.8795 INCHES MAXIMUM IN
extension_outside_diameter0.6400 INCHES MINIMUM AND 0.6500 INCHES MAXIMUM IN
material_document_and_classificationAMS 5663 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
NSN3120-00-352-7645
COMPONENT DIAGRAM
BALL BEARING — SEAL TYPE DETERMINES MAINTENANCE OD: — · BORE: — · WIDTH: — SEAL: Open · PN: 4020640 · 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
•
EXTENSION OUTSIDE DIAMETER: 0.6400 INCHES MINIMUM AND 0.6500 INCHES MAXIMUM IN
•
MATERIAL DOCUMENT AND CLASSIFICATION: AMS 5663 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
•
BODY INSIDE DIAMETER: 0.4480 INCHES MINIMUM AND 0.4490 INCHES MAXIMUM IN
•
MATERIAL: NICKEL ALLOY OVERALL
•
SPHERICAL BODY DIAMETER: 0.8790 INCHES MINIMUM AND 0.8795 INCHES MAXIMUM IN
TECHNICAL CHARACTERISTICS
EXTENSION OUTSIDE DIAMETER0.6400 INCHES MINIMUM AND 0.6500 INCHES MAXIMUM IN
MATERIAL DOCUMENT AND CLASSIFICATIONAMS 5663 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
OVERALL LENGTH0.6150 INCHES MINIMUM AND 0.6250 INCHES MAXIMUM IN
BODY INSIDE DIAMETER0.4480 INCHES MINIMUM AND 0.4490 INCHES MAXIMUM IN
MATERIALNICKEL ALLOY OVERALL
SPHERICAL BODY DIAMETER0.8790 INCHES MINIMUM AND 0.8795 INCHES MAXIMUM IN
OTHER ITEMS IN FSC 3120 — Bearings, Plain, Unmounted
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
3120-00-001-1288 3120-00-001-1835 3120-00-001-1838 3120-00-001-1928 3120-00-001-1934 3120-00-001-3933 3120-00-001-3937 3120-00-001-3938
SUBSTITUTES & CROSS-REFERENCES

No substitute or cross-reference records for this part.

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 4020640?
4020640 is a BEARING,PLAIN,SPHERICAL.
What is the NSN for 4020640?
4020640 is cataloged in the U.S. Government catalog under NSN 3120-00-352-7645. 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.