PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

R8T1U9Bearing,ball,annular

General Motors Corp · NSN 3110-00-555-5449 · FSC 3110 · No Item Name Available
Verified by PartsTable
NSN 3110-00-555-5449 — this item is cataloged by the U.S. Government under National Stock Number 3110-00-555-5449. Primary manufacturer part number: R8T1U9.
Features
  • Bearing,ball,annular — FSC 3110
  • Surface Finish: GROUND
  • Load Direction: RADIAL
  • Style Designator: NON-LOADING GROOVE, NON-SEPARABLE
  • Material: STEEL OVERALL
  • Overall Outside Diameter: 1.1250 INCHES NOMINAL IN
  • Retainer Fabrication Method: PRESSED
  • Bore Diameter: 0.5000 INCHES NOMINAL IN
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 3110-00-555-5449, is classified within Federal Supply Class 3110 (No Item Name Available) of the Bearings group. The primary manufacturer of record is General Motors Corp. Government technical data includes 10 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 12 commercial cross-references from 8 manufacturers, enabling identification through both NSN and commercial part number lookups. 2 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN3110-00-555-5449
Primary Part NumberR8T1U9
Item NameBearing,ball,annular
FSC / FSG3110 / 31 — No Item Name Available
ManufacturerGeneral Motors Corp
StatusCANCELLED
Surface FinishGROUND
Load DirectionRADIAL
Style DesignatorNON-LOADING GROOVE, NON-SEPARABLE
MaterialSTEEL OVERALL
Overall Outside Diameter1.1250 INCHES NOMINAL IN
Retainer Fabrication MethodPRESSED
Bore Diameter0.5000 INCHES NOMINAL IN
Bore ShapeSTRAIGHT
Internal Fit-Up DesignationTIGHT
Standard Tolerance DesignationABEC NO.1
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 2
3110-00-293-9091 INTERCHANGEABLE
Bearing,ball,annular
3110-00-830-4282 INTERCHANGEABLE
Bearing,ball,annular
Cross-Reference Index
Part NumberManufacturer
R8T1U9 General Motors Corp (USA)
R8T1 General Motors Corp (USA)
R8T1 General Motors Corp Delco Moraine Ndh Div (USA)
S5SQ4A7 Skf Usa Inc. (USA)
R8T1U9 General Motors Corp Delco Moraine Ndh Div (USA)
SP7005 Great Dane Trailers Inc (USA)
40456-49 Hydro-Aire Aerospace Corp (USA)
HS5K Timken Co Div the Timken Company (USA)
AA59644-112FATA Federal Commercial Item Description Promulgated by General Services Administration Washington DC (USA)
R8E1-04A306A14S Skf Usa Inc. (USA)
FFB2844/02AM1AC Federal Specifications Promulgated by General Services Administration Washington DC (USA)
A-A-59644A Federal Commercial Item Description Promulgated by General Services Administration Washington DC (USA)
Related Parts
3110-00-293-9091INTERCHANGEABLE
BEARING,BALL,ANNULAR
3110-00-830-4282INTERCHANGEABLE
BEARING,BALL,ANNULAR

Frequently Asked Questions

What is NSN 3110-00-555-5449?

NSN 3110-00-555-5449 is a Bearing,ball,annular, manufactured by General Motors Corp, classified under FSC 3110 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 3110-00-555-5449?

NSN 3110-00-555-5449 has 12 cross-referenced part numbers: R8T1U9 (General Motors Corp), R8T1 (General Motors Corp), R8T1 (General Motors Corp Delco Moraine Ndh Div), S5SQ4A7 (Skf Usa Inc.), R8T1U9 (General Motors Corp Delco Moraine Ndh Div) and 7 more.

What NSN replaces 3110-00-555-5449?

There are 2 known substitutes for 3110-00-555-5449: 3110-00-293-9091, 3110-00-830-4282. Verify interchangeability with system specifications before substitution.

What are the specifications of R8T1U9?

Key specifications for R8T1U9: Surface Finish: GROUND; Overall Width: 0.2500 INCHES NOMINAL IN; Load Direction: RADIAL; Style Designator: NON-LOADING GROOVE, NON-SEPARABLE. 11 total characteristics are documented in the Federal Logistics Information System.

Is NSN 3110-00-555-5449 still in active supply?

NSN 3110-00-555-5449 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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