PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

203SFFQ578Bearing,ball,annular

Skf Usa Inc. · NSN 3110-00-144-8590 · FSC 3110 · No Item Name Available
Verified by PartsTable
NSN 3110-00-144-8590 — this item is cataloged by the U.S. Government under National Stock Number 3110-00-144-8590. Primary manufacturer part number: 203SFFQ578.
Features
  • Bearing,ball,annular — FSC 3110
  • Bore Shape: STRAIGHT
  • Shield Quantity: 2
  • Lubrication Material Document and Classification: MIL-G-3545 MIL SPEC SINGLE MATERIAL RESPONSE
  • Internal Fit-Up Designation: STANDARD
  • Surface Finish: GROUND
  • Standard Tolerance Designation: ABEC NO.1
  • Lubrication Material: GREASE
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 3110-00-144-8590, is classified within Federal Supply Class 3110 (No Item Name Available) of the Bearings group. The primary manufacturer of record is Skf Usa Inc.. Government technical data includes 12 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 44 commercial cross-references from 17 manufacturers, enabling identification through both NSN and commercial part number lookups. 8 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN3110-00-144-8590
Primary Part Number203SFFQ578
Item NameBearing,ball,annular
FSC / FSG3110 / 31 — No Item Name Available
ManufacturerSkf Usa Inc.
StatusACTIVE
Bore ShapeSTRAIGHT
Shield Quantity2
Lubrication Material Document and ClassificationMIL-G-3545 MIL SPEC SINGLE MATERIAL RESPONSE
Internal Fit-Up DesignationSTANDARD
Surface FinishGROUND
Standard Tolerance DesignationABEC NO.1
Lubrication MaterialGREASE
Load DirectionRADIAL
Style DesignatorNON-LOADING GROOVE, NON-SEPARABLE
MaterialSTEEL OVERALL
Bore Diameter17.00 MILLIMETERS NOMINAL MM
Overall Outside Diameter40.00 MILLIMETERS NOMINAL MM
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 8
3110-00-144-859110947091 INTERCHANGEABLE
Bearing,ball,annular
U S Army Tank Automotive Command Amsta-Im-Mm
4520-00-442-2816 INTERCHANGEABLE
Heating Element,electrical,nonim
2530-00-529-420945Z225 INTERCHANGEABLE
Parts Kit,hydraulic Brake Wheel
Morris Material Handling, Inc.
3110-00-555-4147203PPTFMILL3545 INTERCHANGEABLE
Bearing,ball,annular
Fag Bearings Corporation
5960-00-557-5274 INTERCHANGEABLE
Electron Tube
5305-01-102-683790386L11 INTERCHANGEABLE
Screw
Quincy Compressor Division of Coltec Industries Inc Dba Quincy Compressor Div Quincy Compressor
5930-01-582-26516907 INTERCHANGEABLE
Switch Electronic
Frontgrade Technologies Inc. Dba Frontgrade Technologies Inc.
1680-01-658-46116907 INTERCHANGEABLE
Transformer
Oeco, Llc Dba Pacific Scientific Oeco Div Fire Safety and Power Systems
Cross-Reference Index
Part NumberManufacturer
203SFFQ578 PRIMARY Skf Usa Inc. (USA)
203SFFH PRIMARY Skf Usa Inc. (USA)
5828718AL3 General Electric Company (USA)
YP-04106 PRIMARY Pacific Scientific Co Motor and Control Div (USA)
203KDDANG5 Timken Co Div the Timken Company (USA)
203PPTFHT PRIMARY Fag Bearings Corporation (USA)
77503X1BC General Motors Corp Delco Moraine Ndh Div (USA)
6203-2ZHT PRIMARY Skf Usa Inc. (USA)
1203FFHT PRIMARY Schatz Bearing Corporation Dba Schatz Bearing Corp (USA)
5828718AL1 General Electric Company (USA)
RD4637-23 PRIMARY Hydro-Aire Aerospace Corp. Dba Lear Romec Div Lear Romec (USA)
709172-21 PRIMARY Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier (USA)
RD4595-17 PRIMARY Ge Aviation Systems Llc (USA)
1203FFANG5 PRIMARY Schatz Bearing Corporation Dba Schatz Bearing Corp (USA)
JH12A203ANG5 Lucas Aerospace Power Equipment Corporation (USA)
77503X1R5 General Motors Corp Delco Moraine Ndh Div (USA)
5828718AD1 General Electric Company (USA)
203PPTFHTG93 PRIMARY Fag Bearings Corporation (USA)
203SFFQ5-69 PRIMARY Skf Usa Inc. (USA)
6203ZZCE1BT2 PRIMARY Nsk Corp Bearing Div (USA)
Related Parts
3110-00-144-8591INTERCHANGEABLE
BEARING,BALL,ANNULAR
10947091
4520-00-442-2816INTERCHANGEABLE
HEATING ELEMENT,ELECTRICAL,NONIM
2530-00-529-4209INTERCHANGEABLE
PARTS KIT,HYDRAULIC BRAKE WHEEL
45Z225
3110-00-555-4147INTERCHANGEABLE
BEARING,BALL,ANNULAR
203PPTFMILL3545
5960-00-557-5274INTERCHANGEABLE
ELECTRON TUBE
5305-01-102-6837INTERCHANGEABLE
SCREW
90386L11
5930-01-582-2651INTERCHANGEABLE
SWITCH ELECTRONIC
6907
1680-01-658-4611INTERCHANGEABLE
TRANSFORMER
6907

Frequently Asked Questions

What is NSN 3110-00-144-8590?

NSN 3110-00-144-8590 is a Bearing,ball,annular, manufactured by Skf Usa Inc., classified under FSC 3110 (No Item Name Available). Status: active.

What are the part numbers for NSN 3110-00-144-8590?

NSN 3110-00-144-8590 has 44 cross-referenced part numbers: 203SFFQ578 (Skf Usa Inc.), 203SFFH (Skf Usa Inc.), 5828718AL3 (General Electric Company), YP-04106 (Pacific Scientific Co Motor and Control Div), 203KDDANG5 (Timken Co Div the Timken Company) and 39 more.

What NSN replaces 3110-00-144-8590?

There are 8 known substitutes for 3110-00-144-8590: 3110-00-144-8591, 4520-00-442-2816, 2530-00-529-4209 and 5 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 203SFFQ578?

Key specifications for 203SFFQ578: Bore Shape: STRAIGHT; Shield Quantity: 2; Lubrication Material Document and Classification: MIL-G-3545 MIL SPEC SINGLE MATERIAL RESPONSE; Internal Fit-Up Designation: STANDARD. 13 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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