PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

SR166SSW3CG32Bearing,ball,annular

Schaeffler Aerospace Usa Corp Div Schaeffler Aerospace Usa Corporation · NSN 3110-00-256-6901 · FSC 3110 · No Item Name Available
Verified by PartsTable
NSN 3110-00-256-6901 — this item is cataloged by the U.S. Government under National Stock Number 3110-00-256-6901. Primary manufacturer part number: SR166SSW3CG32.
Features
  • Bearing,ball,annular — FSC 3110
  • Load Direction: RADIAL
  • Calibration Designator: C
  • Bore Shape: STRAIGHT
  • Lubrication Material: GREASE
  • Retainer Fabrication Method: PRESSED
  • Internal Fit-Up Designation: STANDARD
  • Surface Finish: GROUND
Applications
  • Rotating machinery support and alignment
  • Shaft load distribution
  • Precision spindle assemblies
  • Applications requiring Steel Comp 440c Overall construction
General Description

The Bearing,ball,annular, cataloged under National Stock Number 3110-00-256-6901, 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 15 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 5 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 6 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN3110-00-256-6901
Primary Part NumberSR166SSW3CG32
Item NameBearing,ball,annular
FSC / FSG3110 / 31 — No Item Name Available
ManufacturerSchaeffler Aerospace Usa Corp Div Schaeffler Aerospace Usa Corporation
StatusACTIVE
Load DirectionRADIAL
Calibration DesignatorC
Bore ShapeSTRAIGHT
Lubrication MaterialGREASE
Retainer Fabrication MethodPRESSED
Internal Fit-Up DesignationSTANDARD
Surface FinishGROUND
Shield Quantity2
Lubrication Material Document and ClassificationMIL-G-23827 MIL SPEC SINGLE MATERIAL RESPONSE
Standard Tolerance DesignationABEC NO.7
Material Document and ClassificationQQ-S-763 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
Style DesignatorNON-LOADING GROOVE, NON-SEPARABLE
MaterialSTEEL COMP 440C OVERALL
Bore Diameter0.1875 INCHES NOMINAL IN
Overall Outside Diameter0.3750 INCHES NOMINAL IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 6
3110-00-110-5578405002-3 INTERCHANGEABLE
Bearing,ball,annular
Transicoil Llc Dba Ads Transicoil Div Transicoil
3110-00-227-2531 INTERCHANGEABLE
Bearing,ball,annular
3110-00-720-2348 INTERCHANGEABLE
Bearing,ball,annular
3110-00-842-3312 INTERCHANGEABLE
Bearing,ball,annular
3110-01-037-4270 INTERCHANGEABLE
Bearing,ball,annular
3110-01-384-7762 INTERCHANGEABLE
Bearing,ball,annular
Cross-Reference Index
Part NumberManufacturer
SR166SSW3CG32 Schaeffler Aerospace Usa Corp Div Schaeffler Aerospace Usa Corporation (USA)
MIL-B-81793D Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
MIL-B-81793/4 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
M81793/04-HD4C2N1E1 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
SR166SSW3CG2 Schaeffler Aerospace Usa Corp Div Schaeffler Aerospace Usa Corporation (USA)
Related Parts
3110-00-110-5578INTERCHANGEABLE
BEARING,BALL,ANNULAR
405002-3
3110-00-227-2531INTERCHANGEABLE
BEARING,BALL,ANNULAR
3110-00-720-2348INTERCHANGEABLE
BEARING,BALL,ANNULAR
3110-00-842-3312INTERCHANGEABLE
BEARING,BALL,ANNULAR
3110-01-037-4270INTERCHANGEABLE
BEARING,BALL,ANNULAR
3110-01-384-7762INTERCHANGEABLE
BEARING,BALL,ANNULAR

Frequently Asked Questions

What is NSN 3110-00-256-6901?

NSN 3110-00-256-6901 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: active.

What are the part numbers for NSN 3110-00-256-6901?

NSN 3110-00-256-6901 has 5 cross-referenced part numbers: SR166SSW3CG32 (Schaeffler Aerospace Usa Corp Div Schaeffler Aerospace Usa Corporation), MIL-B-81793D (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M), MIL-B-81793/4 (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M), M81793/04-HD4C2N1E1 (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M), SR166SSW3CG2 (Schaeffler Aerospace Usa Corp Div Schaeffler Aerospace Usa Corporation).

What NSN replaces 3110-00-256-6901?

There are 6 known substitutes for 3110-00-256-6901: 3110-00-110-5578, 3110-00-227-2531, 3110-00-720-2348 and 3 more. Verify interchangeability with system specifications before substitution.

What are the specifications of SR166SSW3CG32?

Key specifications for SR166SSW3CG32: Load Direction: RADIAL; Calibration Designator: C; Bore Shape: STRAIGHT; Lubrication Material: GREASE. 16 total characteristics are documented in the Federal Logistics Information System.

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