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328373 — BEARING,BALL,ANNULAR

✓ Government record, cited
— · TAPERED BEARING
PRODUCT OVERVIEW

328373: BEARING,BALL,ANNULAR.

The BEARING,BALL,ANNULAR is a the manufacturer industrial component. Key specifications include material: STEEL CORROSION RESISTING INNER RING, bore_shape: STRAIGHT, bore_diameter: 0.1875 INCHES NOMINAL IN, overall_width: 0.1250 INCHES NOMINAL IN, load_direction: RADIAL, surface_finish: GROUND. This part is cataloged in the U.S.

Government catalog under NSN 3110-00-689-7639, 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
328373
NSN: 3110-00-689-7639
FSC: 3110 — Bearings, Antifriction, Unmounted
CAGE: 77445 — RTX CORPORATION DBA PRATT & WHITNEY DIV PRATT &WHITNEY (USA)
SPECIFICATIONS
materialSTEEL CORROSION RESISTING INNER RING
bore_shapeSTRAIGHT
bore_diameter0.1875 INCHES NOMINAL IN
overall_width0.1250 INCHES NOMINAL IN
load_directionRADIAL
surface_finishGROUND
shield_quantity2
special_featuresACTION ID 45465003
style_designatorNON-LOADING GROOVE, NON-SEPARABLE
internal_clearance0.0008 INCHES MAXIMUM RADIAL IN
overall_outside_diameter0.3750 INCHES NOMINAL IN
standard_tolerance_designationABEC NO.5
NSN3110-00-689-7639
COMPONENT DIAGRAM
TAPERED ROLLER BEARING — CUP & CONE ASSEMBLY CAGE CUP BORE CONE OD: — · BORE: — · WIDTH: — Single Row · PN: 328373 · 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
•
INTERNAL CLEARANCE: 0.0008 INCHES MAXIMUM RADIAL IN
•
SURFACE FINISH: GROUND
•
SHIELD QUANTITY: 2
•
STYLE DESIGNATOR: NON-LOADING GROOVE, NON-SEPARABLE
•
OVERALL OUTSIDE DIAMETER: 0.3750 INCHES NOMINAL IN
•
BORE SHAPE: STRAIGHT
•
LOAD DIRECTION: RADIAL
TECHNICAL CHARACTERISTICS
INTERNAL CLEARANCE0.0008 INCHES MAXIMUM RADIAL IN
SURFACE FINISHGROUND
SHIELD QUANTITY2
STYLE DESIGNATORNON-LOADING GROOVE, NON-SEPARABLE
OVERALL WIDTH0.1250 INCHES NOMINAL IN
OVERALL OUTSIDE DIAMETER0.3750 INCHES NOMINAL IN
BORE SHAPESTRAIGHT
LOAD DIRECTIONRADIAL
SPECIAL FEATURESACTION ID 45465003
STANDARD TOLERANCE DESIGNATIONABEC NO.5
SUBSTITUTES & CROSS-REFERENCES 2
446561Reference document
Same NSN cross-reference
Reference document — Secondary reference
446563Reference document
Same NSN cross-reference
Reference document — Vendor item drawing reference
LIFECYCLE
NSN statusCancelled· U.S. Government catalog
Acquisition advice: Insurance item — stocked against contingency demandNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 328373?
328373 is a BEARING,BALL,ANNULAR.
What parts can replace 328373?
There are 2 known substitutes for 328373: 446561, 446563. Substitute compatibility should be verified for your specific system.
What is the NSN for 328373?
328373 is cataloged in the U.S. Government catalog under NSN 3110-00-689-7639. 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.