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Technical Data Sheet
PartsTable / COMPONENT / A21308
A21308 ✓ 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

CONE AND ROLLERS,TAPERED ROLLER. Key specifications include material: STEEL OVERALL, cone_width: 0.8480 INCHES NOMINAL IN, bore_diameter: 0.8120 INCHES NOMINAL IN, special_features: 0.0620 IN. BY 45 DEG CHAMFER BACK-FACE CORNER RADIUS IN, style_designator: NORMAL ANGLE, cone_corner_radius: 0.0620 INCHES NOMINAL IN.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 3110-00-100-3707, 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
A21308
NSN: 3110-00-100-3707
FSC: 3110
CAGE: 60266 — RELIANCE ELECTRIC CO TOLEDO SCALE DIV
SPECIFICATIONS
materialSTEEL OVERALL
cone_width0.8480 INCHES NOMINAL IN
bore_diameter0.8120 INCHES NOMINAL IN
special_features0.0620 IN. BY 45 DEG CHAMFER BACK-FACE CORNER RADIUS IN
style_designatorNORMAL ANGLE
cone_corner_radius0.0620 INCHES NOMINAL IN
standard_tolerance_designationAFBMA CLASS 2
NSN3110-00-100-3707
COMPONENT DIAGRAM
TAPERED ROLLER BEARING — CUP & CONE ASSEMBLY CAGE CUP BORE CONE OD: — · BORE: — · WIDTH: — Single Row · PN: A21308 · 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
•
BORE DIAMETER: 0.8120 INCHES NOMINAL IN
•
CONE WIDTH: 0.8480 INCHES NOMINAL IN
•
CONE CORNER RADIUS: 0.0620 INCHES NOMINAL IN
•
STANDARD TOLERANCE DESIGNATION: AFBMA CLASS 2
•
MATERIAL: STEEL OVERALL
•
STYLE DESIGNATOR: NORMAL ANGLE
TYPICAL APPLICATIONS
  • Long-term data archival and compliance retention
  • Offsite backup and disaster recovery
  • Air-gapped ransomware protection
  • Cold storage tier for infrequently accessed data
TECHNICAL CHARACTERISTICS (FLIS)
BORE DIAMETER0.8120 INCHES NOMINAL IN
CONE WIDTH0.8480 INCHES NOMINAL IN
SPECIAL FEATURES0.0620 IN. BY 45 DEG CHAMFER BACK-FACE CORNER RADIUS IN
CONE CORNER RADIUS0.0620 INCHES NOMINAL IN
STANDARD TOLERANCE DESIGNATIONAFBMA CLASS 2
MATERIALSTEEL OVERALL
STYLE DESIGNATORNORMAL ANGLE
VERIFIED SUBSTITUTES & CROSS-REFERENCES 8
FV31-996Interchangeable
interchangeable cross-reference
interchangeable
31-996Interchangeable
interchangeable cross-reference
interchangeable
09081Interchangeable
interchangeable cross-reference
interchangeable
27L1-2Interchangeable
interchangeable cross-reference
interchangeable
J328HInterchangeable
interchangeable cross-reference
interchangeable
POLYGLACTIN 910Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is A21308?
A21308 is a CONE AND ROLLERS,TAPERED ROLLER.
What parts can replace A21308?
There are 8 known substitutes for A21308: FV31-996, 31-996, 09081 and 5 more. Substitute compatibility should be verified for your specific system.
Is A21308 still available?
A21308 is currently cancelled.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026