PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

R4SS1MILG3278Bearing,ball,annular

Schaeffler Aerospace Usa Corp Div Schaeffler Aerospace Usa Corporation · NSN 3110-00-141-9875 · FSC 3110 · No Item Name Available
Verified by PartsTable
NSN 3110-00-141-9875 — this item is cataloged by the U.S. Government under National Stock Number 3110-00-141-9875. Primary manufacturer part number: R4SS1MILG3278.
Features
  • Bearing,ball,annular — FSC 3110
  • Standard Tolerance Designation: ABEC NO.5
  • Bore Shape: STRAIGHT
  • Surface Finish: GROUND
  • Style Designator: NON-LOADING GROOVE, NON-SEPARABLE
  • Shield Quantity: 2
  • Internal Clearance: 0.0001 INCHES MINIMUM RADIAL AND 0.0003 INCHES MAXIMUM RADIAL IN
  • Overall Outside Diameter: 0.6250 INCHES NOMINAL IN
Applications
  • Rotating machinery support and alignment
  • Shaft load distribution
  • Precision spindle assemblies
  • Applications requiring Steel Overall construction
General Description

The Bearing,ball,annular, cataloged under National Stock Number 3110-00-141-9875, is classified within Federal Supply Class 3110 (No Item Name Available) of the Bearings group. The primary manufacturer of record is Schaeffler Aerospace Usa Corp Div Schaeffler Aerospace Usa Corporation. Government technical data includes 12 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 16 commercial cross-references from 7 manufacturers, enabling identification through both NSN and commercial part number lookups. 2 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN3110-00-141-9875
Primary Part NumberR4SS1MILG3278
Item NameBearing,ball,annular
FSC / FSG3110 / 31 — No Item Name Available
ManufacturerSchaeffler Aerospace Usa Corp Div Schaeffler Aerospace Usa Corporation
StatusCANCELLED
Standard Tolerance DesignationABEC NO.5
Bore ShapeSTRAIGHT
Surface FinishGROUND
Style DesignatorNON-LOADING GROOVE, NON-SEPARABLE
Shield Quantity2
Internal Clearance0.0001 INCHES MINIMUM RADIAL AND 0.0003 INCHES MAXIMUM RADIAL IN
Overall Outside Diameter0.6250 INCHES NOMINAL IN
Bore Diameter0.2500 INCHES NOMINAL IN
Load DirectionRADIAL
Lubrication MaterialGREASE
Lubrication Material Document and ClassificationMIL-G-23827 MIL SPEC SINGLE MATERIAL RESPONSE
MaterialSTEEL OVERALL
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 2
3110-00-183-99751000R192 INTERCHANGEABLE
Bearing,ball,annular
Raytheon Company Dba Raytheon Co
3110-00-435-8919R43PPK15 INTERCHANGEABLE
Bearing,ball,annular
New Hampshire Ball Bearings Inc Div Hitech Division
Cross-Reference Index
Part NumberManufacturer
MS1KDD7 Timken Co Div the Timken Company (USA)
RS77R4DZB5E General Motors Corp (USA)
901714-2 Raytheon Company Dba Raytheon (USA)
RS77R4DZB5E General Motors Corp Delco Moraine Ndh Div (USA)
R4SS1MILG3278 PRIMARY Schaeffler Aerospace Usa Corp Div Schaeffler Aerospace Usa Corporation (USA)
RS77R4DZB5MILG3278 General Motors Corp Delco Moraine Ndh Div (USA)
RS77R4DMR5MILG7421A General Motors Llc Dba General Motors Llc (USA)
RS77R4DZB5MILG3278 General Motors Llc Dba General Motors Llc (USA)
RS77R4DMR5MILG7421A General Motors Corp Delco Moraine Ndh Div (USA)
RS77R4DZB5E General Motors Llc Dba General Motors Llc (USA)
RS77R4DZB5MILG3278 General Motors Corp (USA)
RS77R4DMR5BX General Motors Corp Delco Moraine Ndh Div (USA)
RS77R4DMR5BX General Motors Corp (USA)
RS77R4DMR5MILG7421A General Motors Corp (USA)
R4PPK14MILG7421A PRIMARY New Hampshire Ball Bearings Inc Div Hitech Division (USA)
RS77R4DMR5BX General Motors Llc Dba General Motors Llc (USA)
Related Parts
3110-00-183-9975INTERCHANGEABLE
BEARING,BALL,ANNULAR
1000R192
3110-00-435-8919INTERCHANGEABLE
BEARING,BALL,ANNULAR
R43PPK15

Frequently Asked Questions

What is NSN 3110-00-141-9875?

NSN 3110-00-141-9875 is a Bearing,ball,annular, manufactured by Schaeffler Aerospace Usa Corp Div Schaeffler Aerospace Usa Corporation, classified under FSC 3110 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 3110-00-141-9875?

NSN 3110-00-141-9875 has 16 cross-referenced part numbers: MS1KDD7 (Timken Co Div the Timken Company), RS77R4DZB5E (General Motors Corp), 901714-2 (Raytheon Company Dba Raytheon), RS77R4DZB5E (General Motors Corp Delco Moraine Ndh Div), R4SS1MILG3278 (Schaeffler Aerospace Usa Corp Div Schaeffler Aerospace Usa Corporation) and 11 more.

What NSN replaces 3110-00-141-9875?

There are 2 known substitutes for 3110-00-141-9875: 3110-00-183-9975, 3110-00-435-8919. Verify interchangeability with system specifications before substitution.

What are the specifications of R4SS1MILG3278?

Key specifications for R4SS1MILG3278: Standard Tolerance Designation: ABEC NO.5; Bore Shape: STRAIGHT; Surface Finish: GROUND; Style Designator: NON-LOADING GROOVE, NON-SEPARABLE. 13 total characteristics are documented in the Federal Logistics Information System.

Is NSN 3110-00-141-9875 still in active supply?

NSN 3110-00-141-9875 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.
PartsTable Design LLC · partstable.com