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Technical Data Sheet
PartsTable / COMPONENT / RM386
RM386 ✓ 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

CLAMP,CABLE,ELECTRICAL CONNECTOR. Key specifications include material: ALUMINUM ALLOY LOCATION NOT OTHERWISE SPECIFIED, cup_width: 0.6875 INCHES NOMINAL IN, cone_width: 0.9060 INCHES NOMINAL IN, body_height: 2.938 INCHES NOMINAL IN, body_length: 1.750 INCHES NOMINAL IN, thread_class: 2B. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 3110-00-100-5348, 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
RM386
NSN: 3110-00-100-5348
FSC: 3110
CAGE: 27996 — HEIL ENVIRONMENTAL INDUSTRIES (USA)
SPECIFICATIONS
materialALUMINUM ALLOY LOCATION NOT OTHERWISE SPECIFIED
cup_width0.6875 INCHES NOMINAL IN
cone_width0.9060 INCHES NOMINAL IN
body_height2.938 INCHES NOMINAL IN
body_length1.750 INCHES NOMINAL IN
thread_class2B
body_diameter2.781 INCHES NOMINAL IN
bore_diameter3.0625 INCHES NOMINAL IN
overall_width0.9688 INCHES NOMINAL IN
standout_width0.2813 INCHES NOMINAL IN
size_designation44
special_featuresROLLER BEARING STYLE: NO. 370 OF OLD FIIG A04400;RETAINER FABRICATION METHOD: ANY ACCEPTABLE;SEPERATION FEATURE: INCLUDED;BEARING OUTSIDE DIAMETER: 4.7812 IN. NOM. IN
NSN3110-00-100-5348
COMPONENT DIAGRAM
TAPERED ROLLER BEARING — CUP & CONE ASSEMBLY CAGE CUP BORE CONE OD: — · BORE: — · WIDTH: — Single Row · PN: RM386 · 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
•
STANDOUT WIDTH: 0.2813 INCHES NOMINAL IN
•
CONE CORNER RADIUS: 0.1400 INCHES NOMINAL IN
•
BORE DIAMETER: 3.0625 INCHES NOMINAL IN
•
CUP WIDTH: 0.6875 INCHES NOMINAL IN
•
CONE WIDTH: 0.9060 INCHES NOMINAL IN
•
STANDARD TOLERANCE DESIGNATION: AFBMA CLASS 2
TYPICAL APPLICATIONS
  • Server Internal Cabling
  • Data Center Cable Infrastructure
  • SAS/SATA Drive Connectivity
TECHNICAL CHARACTERISTICS (FLIS)
STANDOUT WIDTH0.2813 INCHES NOMINAL IN
CONE CORNER RADIUS0.1400 INCHES NOMINAL IN
BORE DIAMETER3.0625 INCHES NOMINAL IN
CUP WIDTH0.6875 INCHES NOMINAL IN
CONE WIDTH0.9060 INCHES NOMINAL IN
OVERALL WIDTH0.9688 INCHES NOMINAL IN
STANDARD TOLERANCE DESIGNATIONAFBMA CLASS 2
SPECIAL FEATURESROLLER BEARING STYLE: NO. 370 OF OLD FIIG A04400;RETAINER FABRICATION METHOD: ANY ACCEPTABLE;SEPERATION FEATURE: INCLUDED;BEARING OUTSIDE DIAMETER: 4.7812 IN. NOM. IN
BACKFACE CORNER RADIUS0.0800 INCHES NOMINAL IN
MATERIALSTEEL OVERALL
VERIFIED SUBSTITUTES & CROSS-REFERENCES 11
7247213Interchangeable
interchangeable cross-reference
interchangeable
MS3057-32Interchangeable
interchangeable cross-reference
interchangeable
RM386Interchangeable
interchangeable cross-reference
interchangeable
34306-34478Interchangeable
interchangeable cross-reference
interchangeable
11629138Interchangeable
interchangeable cross-reference
interchangeable
11629138-2Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is RM386?
RM386 is a CLAMP,CABLE,ELECTRICAL CONNECTOR.
What parts can replace RM386?
There are 11 known substitutes for RM386: 7247213, MS3057-32, RM386 and 8 more. Substitute compatibility should be verified for your specific system.
What is the NSN for RM386?
RM386 is cataloged in the Federal Logistics Information System (FLIS) under NSN 3110-00-100-5348. 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