PartsTable
Technical Data Sheet
PartsTable / MRO / F321
F321 ✓ Verified by PartsTable
— · MRO · MRO_GENERAL
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

RING ASSEMBLY,ELECTRICAL CONTACT. Key specifications include color: WHITE, width: 0.040 INCHES NOMINAL IN, length: 14.500 INCHES NOMINAL IN, diameter: 0.281 INCHES NOMINAL IN, material: PLASTIC FRAME, back_shelf: NOT INCLUDED. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 3110-00-120-4287, 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
MRO→ MRO_GENERAL→ F321
NSN: 3110-00-120-4287
FSC: 3110
CAGE: 13125 — CLEVELAND TRENCHER CO INC (USA)
SPECIFICATIONS
colorWHITE
width0.040 INCHES NOMINAL IN
length14.500 INCHES NOMINAL IN
diameter0.281 INCHES NOMINAL IN
materialPLASTIC FRAME
back_shelfNOT INCLUDED
bore_shapeSTRAIGHT
bowl_shapeRECTANGULAR
ledge_backPROVIDED
rim_designAPRON
splash_backNOT PROVIDED
bore_diameter100.00 MILLIMETERS NOMINAL MM
NSN3110-00-120-4287
COMPONENT DIAGRAM
TAPERED ROLLER BEARING — CUP & CONE ASSEMBLY CAGE CUP BORE CONE OD: — · BORE: — · WIDTH: — Single Row · PN: F321 · 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: 1.6250 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS (FLIS)
OVERALL OUTSIDE DIAMETER1.6250 INCHES NOMINAL IN
SPECIAL FEATURESROLLER TYPE: SOLID
OVERALL LENGTH2.0000 INCHES NOMINAL IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 24
141865Interchangeable
interchangeable cross-reference
interchangeable
SK55812Interchangeable
interchangeable cross-reference
interchangeable
ST56Interchangeable
interchangeable cross-reference
interchangeable
700613Interchangeable
interchangeable cross-reference
interchangeable
60574DInterchangeable
interchangeable cross-reference
interchangeable
RJS150Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is F321?
F321 is a RING ASSEMBLY,ELECTRICAL CONTACT. It is classified as a MRO (MRO_GENERAL).
What parts can replace F321?
There are 24 known substitutes for F321: 141865, SK55812, ST56 and 21 more. Substitute compatibility should be verified for your specific system.
What is the NSN for F321?
F321 is cataloged in the Federal Logistics Information System (FLIS) under NSN 3110-00-120-4287. 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