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399A — CONE AND ROLLERS,TAPERED ROLLER

✓ Government record, cited
— · TAPERED BEARING
PRODUCT OVERVIEW

399A: CONE AND ROLLERS,TAPERED ROLLER.

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 part is cataloged in the U.S.

Government catalog 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
NIINs: 001000236, 002949521, 003776525
FSC: 3110 — Bearings, Antifriction, Unmounted
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
SUBSTITUTES & CROSS-REFERENCES 8
ST2001AReference document
Same NSN cross-reference
Reference document — Secondary reference
312085Reference document
Same NSN cross-reference
Reference document — Secondary reference
K399ASame NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
353033Reference document
Same NSN cross-reference
Reference document — Secondary reference
568480Reference document
Same NSN cross-reference
Reference document — Secondary reference
S72001AReference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Normally procured from the manufacturer (OEM)No demilitarization required
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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 8 known substitutes for 399A: ST2001A, 312085, K399A and 5 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 399A?
399A is cataloged in the U.S. Government catalog under NSN 3110-00-100-0236. This indicates validated use in U.S. government and defense supply chains.
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✓ PartsTable — the parts reference. Every fact cited to its source.
PartsTable Design LLC · partstable.com
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.
PartsTable commercial catalog: edition Unified commercial catalog snapshot through 2026-09-28, edition date not on file, retrieved 2026-09-28.