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Technical Data Sheet
PartsTable / COMPONENT / 12859-3
12859-3 ✓ 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

CABLE ASSEMBLY,SPECIAL PURPOSE,E. Key specifications include end_item_identification: F4 AIRCRAFT, general_characteristics_item_description: MATERIAL ALUMINUM ALLOY BAR 6061-T651,SPEC QQ-A-225/8,0.678 IN. O/S DIA,0.500 IN.

I/S DIA IN. This product is currently in active production with full OEM support. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 3110-00-155-9589, 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
12859-3
NSN: 3110-00-155-9589
FSC: 3110
CAGE: 06481 — NORTHROP GRUMMAN SYSTEMS CORPORATION DBA NORTHROP GRUMMAN SYSTEMS CORP (USA)
SPECIFICATIONS
end_item_identificationF4 AIRCRAFT
general_characteristics_item_descriptionMATERIAL ALUMINUM ALLOY BAR 6061-T651,SPEC QQ-A-225/8,0.678 IN. O/S DIA,0.500 IN. I/S DIA IN
NSN3110-00-155-9589
COMPONENT DIAGRAM
TAPERED ROLLER BEARING — CUP & CONE ASSEMBLY CAGE CUP BORE CONE OD: — · BORE: — · WIDTH: — Single Row · PN: 12859-3 · 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
•
SHIELD QUANTITY: 2
•
INTERNAL FIT-UP DESIGNATION: STANDARD
•
LUBRICATION MATERIAL DOCUMENT AND CLASSIFICATION: MIL-G-18709 MIL SPEC SINGLE MATERIAL RESPONSE
•
LUBRICATION MATERIAL: GREASE
•
BORE SHAPE: STRAIGHT
•
LOAD DIRECTION: RADIAL
•
STANDARD TOLERANCE DESIGNATION: ABEC NO.1
TYPICAL APPLICATIONS
  • Server Internal Cabling
  • Data Center Cable Infrastructure
  • SAS/SATA Drive Connectivity
TECHNICAL CHARACTERISTICS (FLIS)
OVERALL OUTSIDE DIAMETER0.3750 INCHES NOMINAL IN
SHIELD QUANTITY2
INTERNAL FIT-UP DESIGNATIONSTANDARD
LUBRICATION MATERIAL DOCUMENT AND CLASSIFICATIONMIL-G-18709 MIL SPEC SINGLE MATERIAL RESPONSE
LUBRICATION MATERIALGREASE
BORE SHAPESTRAIGHT
LOAD DIRECTIONRADIAL
STANDARD TOLERANCE DESIGNATIONABEC NO.1
SURFACE FINISHGROUND
MATERIALSTEEL BALL
VERIFIED SUBSTITUTES & CROSS-REFERENCES 21
10754Interchangeable
interchangeable cross-reference
interchangeable
GGG-E-936Interchangeable
interchangeable cross-reference
interchangeable
GGG-E-936 TY2Interchangeable
interchangeable cross-reference
interchangeable
P9618500-19Interchangeable
interchangeable cross-reference
interchangeable
77R2X1SInterchangeable
interchangeable cross-reference
interchangeable
701088Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 12859-3?
12859-3 is a CABLE ASSEMBLY,SPECIAL PURPOSE,E.
What parts can replace 12859-3?
There are 21 known substitutes for 12859-3: 10754, GGG-E-936, GGG-E-936 TY2 and 18 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 12859-3?
12859-3 is cataloged in the Federal Logistics Information System (FLIS) under NSN 3110-00-155-9589. 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