PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

664664Bearing,ball,annular

Westinghouse Electric Corp · NSN 3110-00-155-9565 · FSC 3110 · No Item Name Available
Verified by PartsTable
NSN 3110-00-155-9565 — this item is cataloged by the U.S. Government under National Stock Number 3110-00-155-9565. Primary manufacturer part number: 664664.
Features
  • Bearing,ball,annular — FSC 3110
  • Load Direction: RADIAL
  • Bore Shape: STRAIGHT
  • Material: STEEL BALL
  • Style Designator: LOADING GROOVE, NON-SEPARABLE
  • Material: STEEL OUTER RING
  • Material: STEEL INNER RING
  • Internal Fit-Up Designation: STANDARD
Applications
  • Rotating machinery support and alignment
  • Shaft load distribution
  • Precision spindle assemblies
  • Applications requiring Steel Ball construction
General Description

The Bearing,ball,annular, cataloged under National Stock Number 3110-00-155-9565, is classified within Federal Supply Class 3110 (No Item Name Available) of the Bearings group. The primary manufacturer of record is Westinghouse Electric Corp. Government technical data includes 13 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 16 commercial cross-references from 9 manufacturers, enabling identification through both NSN and commercial part number lookups. 11 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN3110-00-155-9565
Primary Part Number664664
Item NameBearing,ball,annular
FSC / FSG3110 / 31 — No Item Name Available
ManufacturerWestinghouse Electric Corp
StatusCANCELLED
Load DirectionRADIAL
Bore ShapeSTRAIGHT
MaterialSTEEL BALL
Style DesignatorLOADING GROOVE, NON-SEPARABLE
MaterialSTEEL OUTER RING
MaterialSTEEL INNER RING
Internal Fit-Up DesignationSTANDARD
Outer Ring Width37.00 MILLIMETERS NOMINAL MM
Bore Diameter75.00 MILLIMETERS NOMINAL MM
Standard Tolerance DesignationABEC NO.1
Inner Ring Width2.6875 INCHES NOMINAL IN
Overall Outside Diameter160.00 MILLIMETERS NOMINAL MM
Surface FinishGROUND
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 11
5310-00-010-3332 INTERCHANGEABLE
Washer,lock
3110-00-156-1750 INTERCHANGEABLE
Bearing,ball,thrust
5310-00-167-0835NAS1149F0432P INTERCHANGEABLE
Washer,flat
Sikorsky Aircraft Corporation Dba Sikorsky Aircraft Corp
1560-00-607-211866-4664 INTERCHANGEABLE
Shoe,throttle Brake Control
The Boeing Company Div Defense
6505-00-727-32084315 INTERCHANGEABLE
Hydrochlorothiazide Tablets
Ciba-Geigy Corp Ciba Pharmaceuticals Div
5305-00-834-55694315 INTERCHANGEABLE
Screw,shoulder
Roller Bearing Co of America, Inc Div Pic Design
4930-01-008-6342 INTERCHANGEABLE
Adapter,grease Gun Coupling
5935-01-011-95624315- INTERCHANGEABLE
Backshell,electrical Connector
Electro Adapter Inc
4320-01-197-8527379.303.004 INTERCHANGEABLE
Deflector,dirt and Liquid
Weil Pump Co Inc
5340-01-260-90174315 INTERCHANGEABLE
Standoff,threaded,spacing
Dialight Corporation
Cross-Reference Index
Part NumberManufacturer
664664 PRIMARY Westinghouse Electric Corp (USA)
782796 Westinghouse Electric Corp Power Generation-Generator Div (USA)
664664 Westinghouse Electric Corp Power Generation-Generator Div (USA)
1315MWI PRIMARY Schatz Bearing Corporation Dba Schatz Bearing Corp (USA)
782796 PRIMARY Westinghouse Electric Corp (USA)
WIR315W Timken Co Div the Timken Company (USA)
4315 General Motors Corp (USA)
4315X1 PRIMARY General Motors Llc Dba General Motors Llc (USA)
4315 General Motors Corp Delco Moraine Ndh Div (USA)
4315 General Motors Llc Dba General Motors Llc (USA)
MT315WIR PRIMARY Fag Bearings Corporation (USA)
315WI PRIMARY Skf Usa Inc. (USA)
4315X1 General Motors Corp Delco Moraine Ndh Div (USA)
782807 Westinghouse Electric Corp Power Generation-Generator Div (USA)
4315X1 General Motors Corp (USA)
782807 PRIMARY Westinghouse Electric Corp (USA)
Related Parts
5310-00-010-3332INTERCHANGEABLE
WASHER,LOCK
3110-00-156-1750INTERCHANGEABLE
BEARING,BALL,THRUST
5310-00-167-0835INTERCHANGEABLE
WASHER,FLAT
NAS1149F0432P
1560-00-607-2118INTERCHANGEABLE
SHOE,THROTTLE BRAKE CONTROL
66-4664
6505-00-727-3208INTERCHANGEABLE
HYDROCHLOROTHIAZIDE TABLETS
4315
5305-00-834-5569INTERCHANGEABLE
SCREW,SHOULDER
4315
4930-01-008-6342INTERCHANGEABLE
ADAPTER,GREASE GUN COUPLING
5935-01-011-9562INTERCHANGEABLE
BACKSHELL,ELECTRICAL CONNECTOR
4315-
4320-01-197-8527INTERCHANGEABLE
DEFLECTOR,DIRT AND LIQUID
379.303.004
5340-01-260-9017INTERCHANGEABLE
STANDOFF,THREADED,SPACING
4315
5998-01-320-4242INTERCHANGEABLE
CIRCUIT CARD ASSEMBLY

Frequently Asked Questions

What is NSN 3110-00-155-9565?

NSN 3110-00-155-9565 is a Bearing,ball,annular, manufactured by Westinghouse Electric Corp, classified under FSC 3110 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 3110-00-155-9565?

NSN 3110-00-155-9565 has 16 cross-referenced part numbers: 664664 (Westinghouse Electric Corp), 782796 (Westinghouse Electric Corp Power Generation-Generator Div), 664664 (Westinghouse Electric Corp Power Generation-Generator Div), 1315MWI (Schatz Bearing Corporation Dba Schatz Bearing Corp), 782796 (Westinghouse Electric Corp) and 11 more.

What NSN replaces 3110-00-155-9565?

There are 11 known substitutes for 3110-00-155-9565: 5310-00-010-3332, 3110-00-156-1750, 5310-00-167-0835 and 8 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 664664?

Key specifications for 664664: Load Direction: RADIAL; Bore Shape: STRAIGHT; Material: STEEL BALL; Style Designator: LOADING GROOVE, NON-SEPARABLE. 13 total characteristics are documented in the Federal Logistics Information System.

Is NSN 3110-00-155-9565 still in active supply?

NSN 3110-00-155-9565 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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