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Technical Data Sheet
PartsTable / COMPONENT / 399A
399A ✓ 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 bearing_type: JEWEL, dial_marking: 0-50-0, lifting_lever: NOT INCLUDED, mounting_style: UNIVERSAL ADJUSTABLE DIAL, tell-tale_hand: NOT INCLUDED, graduation_unit: 0.00100 INCHES 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 3110-00-100-0236, 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
399A
NSN: 3110-00-100-0236
FSC: 3110
CAGE: F0704 — THE TIMKEN COMPANY (FRA)
SPECIFICATIONS
bearing_typeJEWEL
dial_marking0-50-0
lifting_leverNOT INCLUDED
mounting_styleUNIVERSAL ADJUSTABLE DIAL
tell-tale_handNOT INCLUDED
graduation_unit0.00100 INCHES IN
overall_diameter2.188 INCHES NOMINAL IN
dial_setting_typeADJUSTABLE
measurement_capacity0.200 INCHES IN
contact_point_locationBACK
contact_point_action_typePLUNGER
cushioned_movement_featureNOT INCLUDED
NSN3110-00-100-0236
COMPONENT DIAGRAM
TAPERED ROLLER BEARING — CUP & CONE ASSEMBLY CAGE CUP BORE CONE OD: — · BORE: — · WIDTH: — Single Row · PN: 399A · 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
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
VERIFIED SUBSTITUTES & CROSS-REFERENCES 25
5296Interchangeable
interchangeable cross-reference
interchangeable
OOS2927-01Interchangeable
interchangeable cross-reference
interchangeable
MIL-S-15297C TYPE AInterchangeable
interchangeable cross-reference
interchangeable
50-7064Interchangeable
interchangeable cross-reference
interchangeable
A-A-2348 TYBST3Interchangeable
interchangeable cross-reference
interchangeable
399AInterchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 399A?
399A is a CONE AND ROLLERS,TAPERED ROLLER.
What parts can replace 399A?
There are 25 known substitutes for 399A: 5296, OOS2927-01, MIL-S-15297C TYPE A and 22 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 399A?
399A is cataloged in the Federal Logistics Information System (FLIS) under NSN 3110-00-100-0236. 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