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Technical Data Sheet
PartsTable / COMPONENT / 5203KN
5203KN ✓ Verified by PartsTable
— · TAPERED BEARING
WHAT YOU NEED TO KNOW
Cup and cone sold separately — confirm both needed Timken series numbers indicate dimensions
Cup and cone NOT sold as set — verify order
PRODUCT OVERVIEW

The BEARING,BALL,ANNULAR is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, bore_shape: STRAIGHT, bore_diameter: 17.00 MILLIMETERS NOMINAL MM, overall_width: 0.5000 INCHES NOMINAL IN, load_direction: ANGULAR, surface_finish: GROUND. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 3110-00-156-4674, 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
5203KN
NSN: 3110-00-156-4674
FSC: 3110
CAGE: 21335 — TIMKEN CO DIV THE TIMKEN COMPANY (USA)
SPECIFICATIONS
materialSTEEL OVERALL
bore_shapeSTRAIGHT
bore_diameter17.00 MILLIMETERS NOMINAL MM
overall_width0.5000 INCHES NOMINAL IN
load_directionANGULAR
surface_finishGROUND
style_designatorNON-LOADING GROOVE, NON-SEPARABLE
overall_outside_diameter40.00 MILLIMETERS NOMINAL MM
internal_fit-up_designationSTANDARD
nondefinitive_spec/std_data143 TYPE AND 00 GRADE
retainer_fabrication_methodPRESSED
standard_tolerance_designationABEC NO.1
NSN3110-00-156-4674
COMPONENT DIAGRAM
TAPERED ROLLER BEARING — CUP & CONE ASSEMBLY CAGE CUP BORE CONE OD: — · BORE: — · WIDTH: — Single Row · PN: 5203KN · 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
•
LOAD DIRECTION: ANGULAR
•
SURFACE FINISH: GROUND
•
STANDARD TOLERANCE DESIGNATION: ABEC NO.1
•
INTERNAL FIT-UP DESIGNATION: STANDARD
•
DEPARTURE FROM CITED DESIGNATOR: AS MODIFIED BY OVERALL WIDTH
•
STYLE DESIGNATOR: NON-LOADING GROOVE, NON-SEPARABLE
•
NONDEFINITIVE SPEC/STD DATA: 143 TYPE AND 00 GRADE
TECHNICAL CHARACTERISTICS (FLIS)
LOAD DIRECTIONANGULAR
SURFACE FINISHGROUND
STANDARD TOLERANCE DESIGNATIONABEC NO.1
OVERALL WIDTH0.5000 INCHES NOMINAL IN
INTERNAL FIT-UP DESIGNATIONSTANDARD
DEPARTURE FROM CITED DESIGNATORAS MODIFIED BY OVERALL WIDTH
STYLE DESIGNATORNON-LOADING GROOVE, NON-SEPARABLE
NONDEFINITIVE SPEC/STD DATA143 TYPE AND 00 GRADE
DEPARTURE FROM CITED DESIGNATORAS MODIFIED BY OVERALL WIDTH
MATERIALSTEEL OVERALL
VERIFIED SUBSTITUTES & CROSS-REFERENCES 18
8203Interchangeable
interchangeable cross-reference
interchangeable
579R437H01Interchangeable
interchangeable cross-reference
interchangeable
DMS 80034BInterchangeable
interchangeable cross-reference
interchangeable
MILT37027Interchangeable
interchangeable cross-reference
interchangeable
CLD51-30030Interchangeable
interchangeable cross-reference
interchangeable
GE4311-1Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 5203KN?
5203KN is a BEARING,BALL,ANNULAR.
What parts can replace 5203KN?
There are 18 known substitutes for 5203KN: 8203, 579R437H01, DMS 80034B and 15 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 5203KN?
5203KN is cataloged in the Federal Logistics Information System (FLIS) under NSN 3110-00-156-4674. This indicates validated use in U.S. government and defense supply chains.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026