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NF4DD ✓ 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, flange_width: 0.0420 INCHES NOMINAL IN, bore_diameter: 0.2500 INCHES MINIMUM AND 0.2503 INCHES MAXIMUM IN, load_direction: RADIAL, 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 3110-00-858-0995, 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
NF4DD
NSN: 3110-00-858-0995
FSC: 3110
CAGE: 21335 — TIMKEN CO DIV THE TIMKEN COMPANY (USA)
SPECIFICATIONS
materialSTEEL OVERALL
bore_shapeSTRAIGHT
flange_width0.0420 INCHES NOMINAL IN
bore_diameter0.2500 INCHES MINIMUM AND 0.2503 INCHES MAXIMUM IN
load_directionRADIAL
surface_finishGROUND
inner_ring_width0.2480 INCHES MINIMUM IN
outer_ring_width0.2260 INCHES NOMINAL IN
style_designatorNON-LOADING GROOVE, NON-SEPARABLE
internal_clearance0.0010 INCHES MAXIMUM RADIAL IN
flange_outside_diameter0.6875 INCHES NOMINAL IN
outer_ring_outside_diameter0.6253 INCHES MINIMUM AND 0.6257 INCHES MAXIMUM IN
NSN3110-00-858-0995
COMPONENT DIAGRAM
TAPERED ROLLER BEARING — CUP & CONE ASSEMBLY CAGE CUP BORE CONE OD: — · BORE: — · WIDTH: — Single Row · PN: NF4DD · 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
•
FLANGE WIDTH: 0.0420 INCHES NOMINAL IN
•
INNER RING WIDTH: 0.2480 INCHES MINIMUM IN
•
BORE DIAMETER: 0.2500 INCHES MINIMUM AND 0.2503 INCHES MAXIMUM IN
•
STYLE DESIGNATOR: NON-LOADING GROOVE, NON-SEPARABLE
•
MATERIAL: STEEL OVERALL
•
SURFACE FINISH: GROUND
•
RETAINER FABRICATION METHOD: PRESSED
•
LOAD DIRECTION: RADIAL
TECHNICAL CHARACTERISTICS (FLIS)
FLANGE WIDTH0.0420 INCHES NOMINAL IN
INNER RING WIDTH0.2480 INCHES MINIMUM IN
BORE DIAMETER0.2500 INCHES MINIMUM AND 0.2503 INCHES MAXIMUM IN
STYLE DESIGNATORNON-LOADING GROOVE, NON-SEPARABLE
MATERIALSTEEL OVERALL
SURFACE FINISHGROUND
RETAINER FABRICATION METHODPRESSED
LOAD DIRECTIONRADIAL
INTERNAL CLEARANCE0.0010 INCHES MAXIMUM RADIAL IN
OUTER RING OUTSIDE DIAMETER0.6253 INCHES MINIMUM AND 0.6257 INCHES MAXIMUM IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 13
F4Interchangeable
interchangeable cross-reference
interchangeable
1000R59Interchangeable
interchangeable cross-reference
interchangeable
T4935021-23Interchangeable
interchangeable cross-reference
interchangeable
2-326-0-020-03-Interchangeable
interchangeable cross-reference
interchangeable
X13333PCFB4Interchangeable
interchangeable cross-reference
interchangeable
FB4Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is NF4DD?
NF4DD is a BEARING,BALL,ANNULAR.
What parts can replace NF4DD?
There are 13 known substitutes for NF4DD: F4, 1000R59, T4935021-23 and 10 more. Substitute compatibility should be verified for your specific system.
What is the NSN for NF4DD?
NF4DD is cataloged in the Federal Logistics Information System (FLIS) under NSN 3110-00-858-0995. 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