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Technical Data Sheet
PartsTable / COMPONENT / M81793/03-HD1N2N1A1
M81793/03-HD1N2N1A1 ✓ 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 M81793/03-HD1N2N1A1 is a the manufacturer industrial component. This product is currently in active production with full OEM support. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 3110-01-040-7180, 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
M81793/03-HD1N2N1A1
NSN: 3110-01-040-7180
FSC: 3110
CAGE: 81349 — MILITARY SPECIFICATIONS PROMULGATED BY MILITARY DEPARTMENTS/AGENCIES UNDER AUTHORITY OF DEFENSE STANDARDIZATION MANUAL 4120 3-M
SPECIFICATIONS
Part NumberM81793/03-HD1N2N1A1
NSN3110-01-040-7180
COMPONENT DIAGRAM
TAPERED ROLLER BEARING — CUP & CONE ASSEMBLY CAGE CUP BORE CONE OD: — · BORE: — · WIDTH: — Single Row · PN: M81793/03-HD1N2N1A1 · 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
•
OVERALL OUTSIDE DIAMETER: 0.3750 INCHES NOMINAL IN
•
STANDARD TOLERANCE DESIGNATION: ABEC NO.5
•
LOAD DIRECTION: RADIAL
•
BORE SHAPE: STRAIGHT
•
LUBRICATION MATERIAL: OIL
•
SURFACE FINISH: GROUND
•
MATERIAL DOCUMENT AND CLASSIFICATION: AISI ASSN STD SINGLE MATERIAL RESPONSE OVERALL
•
MATERIAL: STEEL COMP 440A OVERALL A
TECHNICAL CHARACTERISTICS (FLIS)
OVERALL OUTSIDE DIAMETER0.3750 INCHES NOMINAL IN
STANDARD TOLERANCE DESIGNATIONABEC NO.5
LOAD DIRECTIONRADIAL
BORE SHAPESTRAIGHT
LUBRICATION MATERIALOIL
SURFACE FINISHGROUND
MATERIAL DOCUMENT AND CLASSIFICATIONAISI ASSN STD SINGLE MATERIAL RESPONSE OVERALL
MATERIALSTEEL COMP 440A OVERALL A
STYLE DESIGNATORNON-LOADING GROOVE, NON-SEPARABLE
BORE DIAMETER0.1875 INCHES NOMINAL IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 3
011490Interchangeable
interchangeable cross-reference
interchangeable
SR166K30-11Interchangeable
Same NIIN cross-reference
interchangeable
0391-9Interchangeable
Same NIIN cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is M81793/03-HD1N2N1A1?
M81793/03-HD1N2N1A1 is a M81793/03-HD1N2N1A1.
What parts can replace M81793/03-HD1N2N1A1?
There are 3 known substitutes for M81793/03-HD1N2N1A1: 011490, SR166K30-11, 0391-9. Substitute compatibility should be verified for your specific system.
What is the NSN for M81793/03-HD1N2N1A1?
M81793/03-HD1N2N1A1 is cataloged in the Federal Logistics Information System (FLIS) under NSN 3110-01-040-7180. 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