PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

201KTBearing,ball,annular

Timken Co Div the Timken Company · NSN 3110-00-554-3188 · FSC 3110 · No Item Name Available
Verified by PartsTable
NSN 3110-00-554-3188 — this item is cataloged by the U.S. Government under National Stock Number 3110-00-554-3188. Primary manufacturer part number: 201KT.
Features
  • Bearing,ball,annular — FSC 3110
  • Standard Tolerance Designation: ABEC NO.1
  • Internal Fit-Up Designation: STANDARD
  • Bearing Seal Type: LABYRINTH
  • Bore Diameter: 12.00 MILLIMETERS NOMINAL MM
  • Material: STEEL OVERALL
  • Style Designator: NON-LOADING GROOVE, NON-SEPARABLE
  • Surface Finish: GROUND
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 3110-00-554-3188, 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 14 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. 1 verified substitute exists in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN3110-00-554-3188
Primary Part Number201KT
Item NameBearing,ball,annular
FSC / FSG3110 / 31 — No Item Name Available
ManufacturerTimken Co Div the Timken Company
StatusACTIVE
Standard Tolerance DesignationABEC NO.1
Internal Fit-Up DesignationSTANDARD
Bearing Seal TypeLABYRINTH
Bore Diameter12.00 MILLIMETERS NOMINAL MM
MaterialSTEEL OVERALL
Style DesignatorNON-LOADING GROOVE, NON-SEPARABLE
Surface FinishGROUND
Bore ShapeSTRAIGHT
Outer Ring Width0.5000 INCHES NOMINAL IN
Seal Quantity1
Inner Ring Width0.4800 INCHES NOMINAL IN
Retainer Fabrication MethodPRESSED
Load DirectionRADIAL
Overall Outside Diameter32.00 MILLIMETERS NOMINAL MM
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 1
3110-00-156-4148109119-16 INTERCHANGEABLE
Bearing,ball,annular
Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier
Cross-Reference Index
Part NumberManufacturer
WC8501X1 General Motors Corp Delco Moraine Ndh Div (USA)
201KT PRIMARY Timken Co Div the Timken Company (USA)
FLB12J Skf Usa Inc. (USA)
WC8501X1 General Motors Corp (USA)
201FS4 Skf Usa Inc. (USA)
WC8501CE1TX9 Nsk Corp Bearing Div (USA)
FF-B-171 Federal Specifications Promulgated by General Services Administration Washington DC (USA)
3110005543188 E.c.a Etablissement Central Des Approvisionnements Des Forces Armees Royales
Related Parts
3110-00-156-4148INTERCHANGEABLE
BEARING,BALL,ANNULAR
109119-16

Frequently Asked Questions

What is NSN 3110-00-554-3188?

NSN 3110-00-554-3188 is a Bearing,ball,annular, manufactured by Timken Co Div the Timken Company, classified under FSC 3110 (No Item Name Available). Status: active.

What are the part numbers for NSN 3110-00-554-3188?

NSN 3110-00-554-3188 has 8 cross-referenced part numbers: WC8501X1 (General Motors Corp Delco Moraine Ndh Div), 201KT (Timken Co Div the Timken Company), FLB12J (Skf Usa Inc.), WC8501X1 (General Motors Corp), 201FS4 (Skf Usa Inc.) and 3 more.

What NSN replaces 3110-00-554-3188?

There is 1 known substitute for 3110-00-554-3188: 3110-00-156-4148. Verify interchangeability with system specifications before substitution.

What are the specifications of 201KT?

Key specifications for 201KT: Standard Tolerance Designation: ABEC NO.1; Internal Fit-Up Designation: STANDARD; Bearing Seal Type: LABYRINTH; Bore Diameter: 12.00 MILLIMETERS NOMINAL MM. 15 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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