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H4320-398-6841 — HOUSING,BEARING UNIT

✓ Government record, cited
— · BALL BEARING
PRODUCT OVERVIEW

H4320-398-6841: HOUSING,BEARING UNIT.

The HOUSING,BEARING UNIT is a the manufacturer industrial component. Key specifications include groove_width: 0.1250 INCHES NOMINAL IN, bore_diameter: 2.5630 INCHES NOMINAL IN, housing_length: 3.2500 INCHES NOMINAL IN, pilot_diameter: 4.6240 INCHES MINIMUM AND 4.6250 INCHES MAXIMUM IN, shaft_end_type: OPEN, flange_thickness: 0.7500 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 3130-00-398-6841, 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
H4320-398-6841
NSN: 3130-00-398-6841
FSC: 3130 — Bearings, Mounted
CAGE: 12004 — NAVAL SEA SYSTEMS COMMAND LOGISTICS SUPPORT ENGINEERING ACTIVITY (USA)
SPECIFICATIONS
groove_width0.1250 INCHES NOMINAL IN
bore_diameter2.5630 INCHES NOMINAL IN
housing_length3.2500 INCHES NOMINAL IN
pilot_diameter4.6240 INCHES MINIMUM AND 4.6250 INCHES MAXIMUM IN
shaft_end_typeOPEN
flange_thickness0.7500 INCHES NOMINAL IN
housing_diameter5.1250 INCHES NOMINAL IN
overall_outside_diameter5.7500 INCHES NOMINAL IN
NSN3130-00-398-6841
COMPONENT DIAGRAM
BALL BEARING — SEAL TYPE DETERMINES MAINTENANCE OD: — · BORE: — · WIDTH: — SEAL: Open · PN: H4320-398-6841 · 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
•
FLANGE THICKNESS: 0.7500 INCHES NOMINAL IN
•
OVERALL OUTSIDE DIAMETER: 5.7500 INCHES NOMINAL IN
•
PILOT DIAMETER: 4.6240 INCHES MINIMUM AND 4.6250 INCHES MAXIMUM IN
•
SHAFT END TYPE: OPEN
•
BORE DIAMETER: 2.5630 INCHES NOMINAL IN
•
HOUSING LENGTH: 3.2500 INCHES NOMINAL IN
•
GROOVE WIDTH: 0.1250 INCHES NOMINAL IN
•
HOUSING DIAMETER: 5.1250 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS
FLANGE THICKNESS0.7500 INCHES NOMINAL IN
OVERALL OUTSIDE DIAMETER5.7500 INCHES NOMINAL IN
PILOT DIAMETER4.6240 INCHES MINIMUM AND 4.6250 INCHES MAXIMUM IN
SHAFT END TYPEOPEN
BORE DIAMETER2.5630 INCHES NOMINAL IN
HOUSING LENGTH3.2500 INCHES NOMINAL IN
GROOVE WIDTH0.1250 INCHES NOMINAL IN
HOUSING DIAMETER5.1250 INCHES NOMINAL IN
OTHER ITEMS IN FSC 3130 — Bearings, Mounted
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
3130-00-001-5118 3130-00-001-5137 3130-00-001-6585 3130-00-003-0422 3130-00-003-0455 3130-00-003-0794 3130-00-003-2802 3130-00-003-9535
SUBSTITUTES & CROSS-REFERENCES

No substitute or cross-reference records for this part.

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 H4320-398-6841?
H4320-398-6841 is a HOUSING,BEARING UNIT.
What is the NSN for H4320-398-6841?
H4320-398-6841 is cataloged in the U.S. Government catalog under NSN 3130-00-398-6841. 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.