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3900635 — BEARING,SLEEVE

✓ Government record, cited
— · BALL BEARING
PRODUCT OVERVIEW

3900635: BEARING,SLEEVE.

The BEARING,SLEEVE is a the manufacturer industrial component. Key specifications include head_style: HEXAGON EXTENDED WASHER, fastener_length: 60.0 MILLIMETERS NOMINAL MM, thread_direction: RIGHT-HAND, nominal_thread_diameter: 10.0 MILLIMETERS MM, thread_pitch_in_millimeters: 1.50. This part is cataloged in the U.S.

Government catalog under NSN 3120-00-498-4277, 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
3900635
NSN: 3120-00-498-4277
NIINs: 004984277, 014129805
FSC: 3120 — Bearings, Plain, Unmounted
CAGE: 16712 — SIEMENS ENERGY, INC. (USA)
SPECIFICATIONS
head_styleHEXAGON EXTENDED WASHER
fastener_length60.0 MILLIMETERS NOMINAL MM
thread_directionRIGHT-HAND
nominal_thread_diameter10.0 MILLIMETERS MM
thread_series_designatorM
thread_pitch_in_millimeters1.50
NSN3120-00-498-4277
COMPONENT DIAGRAM
BALL BEARING — SEAL TYPE DETERMINES MAINTENANCE OD: — · BORE: — · WIDTH: — SEAL: Open · PN: 3900635 · 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
•
SURFACE FINISH: 63.0 MICROINCHES OUTSIDE DIAMETER SURFACE OF BODY
•
BODY OUTSIDE DIAMETER: 27.9990 INCHES MINIMUM AND 28.0000 INCHES MAXIMUM IN
•
BODY INSIDE DIAMETER: 4.0000 INCHES MINIMUM AND 4.0010 INCHES MAXIMUM IN
•
MATERIAL: OIL LUBRICATING LUBRICATION
TECHNICAL CHARACTERISTICS
SURFACE FINISH63.0 MICROINCHES OUTSIDE DIAMETER SURFACE OF BODY
SURFACE FINISH32.0 MICROINCHES INSIDE DIAMETER SURFACE OF BODY
BODY OUTSIDE DIAMETER27.9990 INCHES MINIMUM AND 28.0000 INCHES MAXIMUM IN
OVERALL LENGTH20.0000 INCHES NOMINAL IN
BODY INSIDE DIAMETER4.0000 INCHES MINIMUM AND 4.0010 INCHES MAXIMUM IN
MATERIALOIL LUBRICATING LUBRICATION
SUBSTITUTES & CROSS-REFERENCES 2
KGR390BFX3ULSame NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
D59212Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
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 3900635?
3900635 is a BEARING,SLEEVE.
What parts can replace 3900635?
There are 2 known substitutes for 3900635: KGR390BFX3UL, D59212. Substitute compatibility should be verified for your specific system.
What is the NSN for 3900635?
3900635 is cataloged in the U.S. Government catalog under NSN 3120-00-498-4277. 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.