PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

203PPC9FS137Bearing,ball,annular

Timken Co Div the Timken Company · NSN 3110-00-278-7323 · FSC 3110 · No Item Name Available
Verified by PartsTable
NSN 3110-00-278-7323 — this item is cataloged by the U.S. Government under National Stock Number 3110-00-278-7323. Primary manufacturer part number: 203PPC9FS137.
Features
  • Bearing,ball,annular — FSC 3110
  • Bore Diameter: 17.0 MILLIMETERS NOMINAL MM
  • Bore Shape: STRAIGHT
  • Standard Tolerance Designation: ABEC NO.1
  • Load Direction: RADIAL
  • Retainer Fabrication Method: PRESSED
  • Seal Quantity: 2
  • Lubrication Material Document and Classification: MIL-L-15719 MIL SPEC SINGLE MATERIAL RESPONSE
Applications
  • Rotating machinery support and alignment
  • Shaft load distribution
  • Precision spindle assemblies
  • Applications requiring Steel Inner Ring construction
General Description

The Bearing,ball,annular, cataloged under National Stock Number 3110-00-278-7323, is classified within Federal Supply Class 3110 (No Item Name Available) of the Bearings group. The primary manufacturer of record is Timken Co Div the Timken Company. Government technical data includes 18 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 23 commercial cross-references from 13 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
NSN3110-00-278-7323
Primary Part Number203PPC9FS137
Item NameBearing,ball,annular
FSC / FSG3110 / 31 — No Item Name Available
ManufacturerTimken Co Div the Timken Company
StatusCANCELLED
Bore Diameter17.0 MILLIMETERS NOMINAL MM
Bore ShapeSTRAIGHT
Standard Tolerance DesignationABEC NO.1
Load DirectionRADIAL
Retainer Fabrication MethodPRESSED
Seal Quantity2
Lubrication Material Document and ClassificationMIL-L-15719 MIL SPEC SINGLE MATERIAL RESPONSE
Surface FinishGROUND
Lubrication MaterialGREASE
Internal Fit-Up DesignationSTANDARD
Bearing Seal TypeCONTACT
MaterialSTEEL INNER RING
MaterialSTEEL BALL
MaterialRUBBER SYNTHETIC SEAL
MaterialSTEEL RETAINER
MaterialSTEEL OUTER RING
Style DesignatorNON-LOADING GROOVE, NON-SEPARABLE
Overall Outside Diameter40.0 MILLIMETERS NOMINAL MM
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 5
3120-00-246-499785010 INTERCHANGEABLE
Bearing,main
Perkins Engines Inc
3120-00-554-044971123 INTERCHANGEABLE
Bearing,sleeve
Textron Lycoming Inc Williamsport Plant
3110-01-042-2908 INTERCHANGEABLE
Bearing,ball,annular
4820-01-426-561571123 INTERCHANGEABLE
Valve Assembly
Hydro-Aire Aerospace Corp
5995-01-609-432871123 INTERCHANGEABLE
Cable Assembly,special Purpose,e
United Western Technologies Corp.
Cross-Reference Index
Part NumberManufacturer
203PPC9FS137 Timken Co Div the Timken Company (USA)
Z99503X1MILL15719A General Motors Corp (USA)
6203-2RSRB Skf Usa Inc. (USA)
K54-0019 Ward Leonard Ct Llc (USA)
A-A-59584 Federal Commercial Item Description Promulgated by General Services Administration Washington DC (USA)
203CC Federal-Mogul Corp Government Sales Dept (USA)
71123 Prestolite Electric Inc (USA)
7823B-17 Marathon Electric, Llc (USA)
203PPFS137 Timken Co Div the Timken Company (USA)
Z99503X1MILL15719A General Motors Corp Delco Moraine Ndh Div (USA)
6203DDUCEDF2 Nsk Corp Bearing Div (USA)
BB1042 Adams Aircraft International Inc (USA)
Z99503XR1S General Motors Corp Delco Moraine Ndh Div (USA)
K54-0019 Ward Leonard Ct Llc (USA)
A-7823B-17 Marathon Electric, Llc (USA)
203PPMILL15719A Timken Co Div the Timken Company (USA)
203NNTFMILL15719A Fag Bearings Corporation (USA)
BB1042 Ambac International Corporation Div Ambac International (USA)
203KKF4 Fag Bearings Corporation (USA)
203PPFS137AA Timken Co Div the Timken Company (USA)
Related Parts
3120-00-246-4997INTERCHANGEABLE
BEARING,MAIN
85010
3120-00-554-0449INTERCHANGEABLE
BEARING,SLEEVE
71123
3110-01-042-2908INTERCHANGEABLE
BEARING,BALL,ANNULAR
4820-01-426-5615INTERCHANGEABLE
VALVE ASSEMBLY
71123
5995-01-609-4328INTERCHANGEABLE
CABLE ASSEMBLY,SPECIAL PURPOSE,E
71123

Frequently Asked Questions

What is NSN 3110-00-278-7323?

NSN 3110-00-278-7323 is a Bearing,ball,annular, manufactured by Timken Co Div the Timken Company, classified under FSC 3110 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 3110-00-278-7323?

NSN 3110-00-278-7323 has 23 cross-referenced part numbers: 203PPC9FS137 (Timken Co Div the Timken Company), Z99503X1MILL15719A (General Motors Corp), 6203-2RSRB (Skf Usa Inc.), K54-0019 (Ward Leonard Ct Llc), A-A-59584 (Federal Commercial Item Description Promulgated by General Services Administration Washington DC) and 18 more.

What NSN replaces 3110-00-278-7323?

There are 5 known substitutes for 3110-00-278-7323: 3120-00-246-4997, 3120-00-554-0449, 3110-01-042-2908 and 2 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 203PPC9FS137?

Key specifications for 203PPC9FS137: Bore Diameter: 17.0 MILLIMETERS NOMINAL MM; Bore Shape: STRAIGHT; Standard Tolerance Designation: ABEC NO.1; Load Direction: RADIAL. 19 total characteristics are documented in the Federal Logistics Information System.

Is NSN 3110-00-278-7323 still in active supply?

NSN 3110-00-278-7323 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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