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C393 — CONE AND ROLLERS,TAPERED ROLLER

✓ Government record, cited
— · TAPERED BEARING
PRODUCT OVERVIEW

C393: CONE AND ROLLERS,TAPERED ROLLER.

CONE AND ROLLERS,TAPERED ROLLER. Key specifications include material: STEEL COMP 8740 BARREL, mounting_style: PLAIN W/MOUNTING HOLE, receptacle_width: 0.410 INCHES MAXIMUM IN, special_features: STUD PROTRUSION 0.125 IN. NOM LENGTH IN, receptacle_height: 0.332 INCHES MAXIMUM IN, surface_treatment: CADMIUM AND CHROMATE OVERALL.

This part is cataloged in the U.S. Government catalog under NSN 3110-00-100-0642, 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
C393
NSN: 3110-00-100-0642
NIINs: 001000642, 001336085, 001972814
FSC: 3110 — Bearings, Antifriction, Unmounted
CAGE: 61822 — AMCA INTL CORP UNIT CRANE DIV (USA)
SPECIFICATIONS
materialSTEEL COMP 8740 BARREL
mounting_stylePLAIN W/MOUNTING HOLE
receptacle_width0.410 INCHES MAXIMUM IN
special_featuresSTUD PROTRUSION 0.125 IN. NOM LENGTH IN
receptacle_height0.332 INCHES MAXIMUM IN
surface_treatmentCADMIUM AND CHROMATE OVERALL
receptacle_overall_length1.012 INCHES MAXIMUM IN
turnlock_receptacle_styleRECEPTACLE
turnlock_mounting_hole_diameter0.098 INCHES MINIMUM AND 0.103 INCHES MAXIMUM IN
material_document_and_classificationAMS 6322 ASSN STD SINGLE MATERIAL RESPONSE BARREL
surface_treatment_document_and_classificationQQ-P-416 TY 2 CL 2 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
center_to_center_distance_between_mounting_holes0.748 INCHES MINIMUM AND 0.752 INCHES MAXIMUM IN
NSN3110-00-100-0642
COMPONENT DIAGRAM
TAPERED ROLLER BEARING — CUP & CONE ASSEMBLY CAGE CUP BORE CONE OD: — · BORE: — · WIDTH: — Single Row · PN: C393 · 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
90954Reference document
Same NSN cross-reference
Reference document — Secondary reference
277715Reference document
Same NSN cross-reference
Reference document — Secondary reference
530371Reference document
Same NSN cross-reference
Reference document — Secondary reference
575Reference document
Same NSN cross-reference
Reference document — Secondary reference
21050Reference document
Same NSN cross-reference
Reference document — Secondary reference
5608TA2Reference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusCancelled· U.S. Government catalog
Acquisition advice: Insurance item — stocked against contingency demandNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is C393?
C393 is a CONE AND ROLLERS,TAPERED ROLLER.
What parts can replace C393?
There are 8 known substitutes for C393: 90954, 277715, 530371 and 5 more. Substitute compatibility should be verified for your specific system.
What is the NSN for C393?
C393 is cataloged in the U.S. Government catalog under NSN 3110-00-100-0642. 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.