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4303-70-220-0251 — PLATE,RETAINING,BEARING

✓ Government record, cited
— · TAPERED BEARING
PRODUCT OVERVIEW

4303-70-220-0251: PLATE,RETAINING,BEARING.

The PLATE,RETAINING,BEARING is a the manufacturer industrial component. Key specifications include material: STEEL COMP 304 OVERALL, surface_finish: 63.0 MICROINCHES BORE, minor_thickness: 0.2000 INCHES NOMINAL IN, outside_diameter: 4.1000 INCHES NOMINAL IN, style_designator: ROUND, aperture_diameter: 2.0035 INCHES MINIMUM AND 2.0085 INCHES MAXIMUM IN. This part is cataloged in the U.S.

Government catalog under NSN 3110-01-312-4059, 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
4303-70-220-0251
NSN: 3110-01-312-4059
FSC: 3110 — Bearings, Antifriction, Unmounted
CAGE: 29355 — NAVY, UNITED STATES DEPARTMENT OF THE DBA SPACE & NAVAL WARFARE SYSTEMS CENTER, ATLANTIC (USA)
SPECIFICATIONS
materialSTEEL COMP 304 OVERALL
surface_finish63.0 MICROINCHES BORE
minor_thickness0.2000 INCHES NOMINAL IN
outside_diameter4.1000 INCHES NOMINAL IN
style_designatorROUND
aperture_diameter2.0035 INCHES MINIMUM AND 2.0085 INCHES MAXIMUM IN
countersink_angle80.0 DEGREES MINIMUM AND 100.0 DEGREES MAXIMUM
overall_thickness1.1500 INCHES NOMINAL IN
mounting_hole_typeROUND, THREADED, COUNTERSUNK
nominal_thread_size0.250 INCHES IN
countersink_diameter0.271 INCHES NOMINAL IN
first_counterbore_depth0.2000 INCHES NOMINAL IN
NSN3110-01-312-4059
COMPONENT DIAGRAM
TAPERED ROLLER BEARING — CUP & CONE ASSEMBLY CAGE CUP BORE CONE OD: — · BORE: — · WIDTH: — Single Row · PN: 4303-70-220-0251 · OEM ⚠ VERIFY BEFORE ORDERING Cup and cone sold separately — verify you are ordering BOTH parts or the correct component. Always replace cup and cone together — mismatched wear = premature failure ✓ BROKER TIP Taper angle determines axial load capacity. Steeper angle = higher axial load rating. Timken series numbers indicate dimensions — cross-reference carefully PARTSTABLE TECHNICAL DRAWING — NOT TO SCALE
KEY FEATURES
•
SECOND COUNTERBORE DEPTH: 0.7500 INCHES NOMINAL IN
•
SURFACE FINISH: 63.0 MICROINCHES OUTSIDE DIAMETER
•
COUNTERSINK DIAMETER: 0.271 INCHES NOMINAL IN
•
MINOR THICKNESS: 0.2000 INCHES NOMINAL IN
•
BOLT CIRCLE HOLE QUANTITY: 7
•
MOUNTING HOLE TYPE: ROUND, THREADED, COUNTERSUNK
TECHNICAL CHARACTERISTICS
SECOND COUNTERBORE DEPTH0.7500 INCHES NOMINAL IN
SURFACE FINISH63.0 MICROINCHES OUTSIDE DIAMETER
SURFACE FINISH63.0 MICROINCHES BORE
SURFACE FINISH63.0 MICROINCHES APERTURE
COUNTERSINK DIAMETER0.271 INCHES NOMINAL IN
MINOR THICKNESS0.2000 INCHES NOMINAL IN
BOLT CIRCLE HOLE QUANTITY7
MOUNTING HOLE TYPEROUND, THREADED, COUNTERSUNK
MOUNTING HOLE ARRANGEMENT STYLESINGLE BOLT HOLE CIRCLE
OVERALL THICKNESS1.1500 INCHES NOMINAL IN
OTHER ITEMS IN FSC 3110 — Bearings, Antifriction, Unmounted
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
3110-00-001-1937 3110-00-001-1938 3110-00-001-4661 3110-00-001-4662 3110-00-001-4689 3110-00-001-4722
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 4303-70-220-0251?
4303-70-220-0251 is a PLATE,RETAINING,BEARING.
What is the NSN for 4303-70-220-0251?
4303-70-220-0251 is cataloged in the U.S. Government catalog under NSN 3110-01-312-4059. 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.