PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

REP4ML6-8GBearing,ball,rod End

Roller Bearing Company of America, Inc. · NSN 3110-00-915-3278 · FSC 3110 · No Item Name Available
Verified by PartsTable
NSN 3110-00-915-3278 — this item is cataloged by the U.S. Government under National Stock Number 3110-00-915-3278. Primary manufacturer part number: REP4ML6-8G.
Features
  • Bearing,ball,rod End — FSC 3110
  • Shank Diameter: 0.3750 INCHES NOMINAL IN
  • Lubrication Material Document and Classification: MIL-G-23827 MIL SPEC SINGLE MATERIAL RESPONSE
  • Standard Tolerance Designation: AFBMA STD TOLERANCE FOR ROD END BALL BEARING
  • Outer Ring Width: 0.4380 INCHES NOMINAL IN
  • Self-Alignment Location: INTERNAL
  • Seal Quantity: 2
  • Length From Bore Center to Shank End: 1.8750 INCHES NOMINAL IN
Applications
  • Rotating machinery support and alignment
  • Shaft load distribution
  • Precision spindle assemblies
  • Applications requiring Steel Comp 4130 or Steel Comp 8620 Rod End Body construction
General Description

The Bearing,ball,rod End, cataloged under National Stock Number 3110-00-915-3278, is classified within Federal Supply Class 3110 (No Item Name Available) of the Bearings group. The primary manufacturer of record is Roller Bearing Company of America, Inc.. Government technical data includes 29 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 8 commercial cross-references from 7 manufacturers, enabling identification through both NSN and commercial part number lookups. 5 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN3110-00-915-3278
Primary Part NumberREP4ML6-8G
Item NameBearing,ball,rod End
FSC / FSG3110 / 31 — No Item Name Available
ManufacturerRoller Bearing Company of America, Inc.
StatusCANCELLED
Shank Diameter0.3750 INCHES NOMINAL IN
Lubrication Material Document and ClassificationMIL-G-23827 MIL SPEC SINGLE MATERIAL RESPONSE
Standard Tolerance DesignationAFBMA STD TOLERANCE FOR ROD END BALL BEARING
Outer Ring Width0.4380 INCHES NOMINAL IN
Self-Alignment LocationINTERNAL
Seal Quantity2
Length From Bore Center to Shank End1.8750 INCHES NOMINAL IN
Bearing Seal TypeCONTACT
Internal Clearance0.0000 INCHES MINIMUM RADIAL AND 0.0004 INCHES MAXIMUM RADIAL IN
Retainer Fabrication MethodPRESSED
Thread Quantity Per Inch24
Lubrication MaterialGREASE
Shank Thread Length1.1250 INCHES NOMINAL IN
Nominal Thread Size0.375 INCHES IN
Alignment TypeSELF-ALIGNING
Self-Alignment Angle10.00 DEGREES NOMINAL
Inner Ring Width0.5930 INCHES NOMINAL IN
Shank StyleEXTERNALLY THREADED
Surface Treatment Document and ClassificationQQ-P-416,TYPE 1,CLASS 2 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
Style DesignatorDOUBLE ROW, STAGGERED, BALL
MaterialSTEEL COMP 4130 OR STEEL COMP 8620 ROD END BODY
Material Document and ClassificationAISI ASSN STD SINGLE MATERIAL RESPONSE RETAINER
Material Document and ClassificationAISI ASSN STD SINGLE MATERIAL RESPONSE OR MIL-S-7420 MIL SPEC SINGLE MATERIAL RESPONSE INNER RING
MaterialSTEEL COMP 301 RETAINER
Material Document and ClassificationAISI ASSN STD SINGLE MATERIAL RESPONSE OR MIL-S-7420 MIL SPEC SINGLE MATERIAL RESPONSE BALL
Material Document and ClassificationAISI ASSN STD 1ST MATERIAL RESPONSE OR MIL-S-6758 MIL SPEC 1ST MATERIAL RESPONSE OR AISI ASSN STD 2ND MATERIAL RESPONSE OR MIL-S-8690 MIL SPEC 2ND MATERIAL RESPONSE ROD END BODY
MaterialPLASTIC POLYTETRAFLUOROETHYLENE SEAL
Material Document and ClassificationAMS 3625 ASSN STD SINGLE MATERIAL RESPONSE OR AMS 3666 ASSN STD SINGLE MATERIAL RESPONSE SEAL
Bore Diameter0.2500 INCHES NOMINAL IN
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 5
3110-00-173-5074MS21153-4G INTERCHANGEABLE
Bearing,ball,rod End
Sae International Dba Sae International
3110-00-187-5666MS21152-2 INTERCHANGEABLE
Bearing,ball,rod End
Sae International Dba Sae International
3110-00-232-3177MS21151-9 INTERCHANGEABLE
Bearing,ball,rod End
Sae International Dba Sae International
3110-00-625-9284 INTERCHANGEABLE
Bearing,ball,rod End
3110-00-766-6924MS21151-4 INTERCHANGEABLE
Bearing,ball,rod End
Sae International Dba Sae International
Cross-Reference Index
Part NumberManufacturer
REP4ML6-8G Roller Bearing Company of America, Inc. (USA)
AS6039 Society of Automotive Engineers Inc (USA)
AN946RE4ML6 Aeronautical Standards Group Dept of Navy and Air Force (USA)
AS6039 Sae International Dba Sae International (USA)
MS21151-9G Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M
REP4ML6 Schaeffler France (FRA)
REP4ML6FS210 Timken Co Div the Timken Company (USA)
REP4ML6 Timken Co Div the Timken Company (USA)
Related Parts
3110-00-173-5074INTERCHANGEABLE
BEARING,BALL,ROD END
MS21153-4G
3110-00-187-5666INTERCHANGEABLE
BEARING,BALL,ROD END
MS21152-2
3110-00-232-3177INTERCHANGEABLE
BEARING,BALL,ROD END
MS21151-9
3110-00-625-9284INTERCHANGEABLE
BEARING,BALL,ROD END
3110-00-766-6924INTERCHANGEABLE
BEARING,BALL,ROD END
MS21151-4

Frequently Asked Questions

What is NSN 3110-00-915-3278?

NSN 3110-00-915-3278 is a Bearing,ball,rod End, manufactured by Roller Bearing Company of America, Inc., classified under FSC 3110 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 3110-00-915-3278?

NSN 3110-00-915-3278 has 8 cross-referenced part numbers: REP4ML6-8G (Roller Bearing Company of America, Inc.), AS6039 (Society of Automotive Engineers Inc), AN946RE4ML6 (Aeronautical Standards Group Dept of Navy and Air Force), AS6039 (Sae International Dba Sae International), MS21151-9G (Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M) and 3 more.

What NSN replaces 3110-00-915-3278?

There are 5 known substitutes for 3110-00-915-3278: 3110-00-173-5074, 3110-00-187-5666, 3110-00-232-3177 and 2 more. Verify interchangeability with system specifications before substitution.

What are the specifications of REP4ML6-8G?

Key specifications for REP4ML6-8G: Shank Diameter: 0.3750 INCHES NOMINAL IN; Lubrication Material Document and Classification: MIL-G-23827 MIL SPEC SINGLE MATERIAL RESPONSE; Standard Tolerance Designation: AFBMA STD TOLERANCE FOR ROD END BALL BEARING; Outer Ring Width: 0.4380 INCHES NOMINAL IN. 30 total characteristics are documented in the Federal Logistics Information System.

Is NSN 3110-00-915-3278 still in active supply?

NSN 3110-00-915-3278 is currently cancelled. Check with the Defense Logistics Agency for current availability and authorized substitutes.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
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