PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

71123Bearing,sleeve

Textron Lycoming Inc Williamsport Plant · NSN 3120-00-554-0449 · FSC 3120 · No Item Name Available
Verified by PartsTable
NSN 3120-00-554-0449 — this item is cataloged by the U.S. Government under National Stock Number 3120-00-554-0449. Primary manufacturer part number: 71123.
Features
  • Bearing,sleeve — FSC 3120
  • Material: OIL LUBRICATING LUBRICATION
  • Body Outside Diameter: 1.5020 INCHES MINIMUM AND 1.5030 INCHES MAXIMUM IN
  • Corner Shape: SQUARE INSIDE LEFT CORNER
  • Body Inside Diameter: 1.3145 INCHES MINIMUM AND 1.3155 INCHES MAXIMUM IN
  • Material Document and Classification: AMS 4805 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
  • Style Designator: SOLID, PLAIN, NO OUTSIDE FLANGES
  • Corner Shape: CHAMFERED OUTSIDE LEFT CORNER
Applications
  • Rotating machinery support and alignment
  • Shaft load distribution
  • Precision spindle assemblies
  • Applications requiring Oil Lubricating Lubrication construction
General Description

The Bearing,sleeve, cataloged under National Stock Number 3120-00-554-0449, is classified within Federal Supply Class 3120 (No Item Name Available) of the Bearings group. The primary manufacturer of record is Textron Lycoming Inc Williamsport Plant. Government technical data includes 9 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 1 commercial cross-reference from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 4 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN3120-00-554-0449
Primary Part Number71123
Item NameBearing,sleeve
FSC / FSG3120 / 31 — No Item Name Available
ManufacturerTextron Lycoming Inc Williamsport Plant
StatusCANCELLED
MaterialOIL LUBRICATING LUBRICATION
Body Outside Diameter1.5020 INCHES MINIMUM AND 1.5030 INCHES MAXIMUM IN
Corner ShapeSQUARE INSIDE LEFT CORNER
Body Inside Diameter1.3145 INCHES MINIMUM AND 1.3155 INCHES MAXIMUM IN
Material Document and ClassificationAMS 4805 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
Style DesignatorSOLID, PLAIN, NO OUTSIDE FLANGES
Corner ShapeCHAMFERED OUTSIDE LEFT CORNER
Corner ShapeSQUARE INSIDE RIGHT CORNER
Corner ShapeCHAMFERED OUTSIDE RIGHT CORNER
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 4
3120-00-246-499785010 INTERCHANGEABLE
Bearing,main
Perkins Engines Inc
3110-00-278-7323 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
71123 PRIMARY Textron Lycoming Inc Williamsport Plant (USA)
Related Parts
3120-00-246-4997INTERCHANGEABLE
BEARING,MAIN
85010
3110-00-278-7323INTERCHANGEABLE
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 3120-00-554-0449?

NSN 3120-00-554-0449 is a Bearing,sleeve, manufactured by Textron Lycoming Inc Williamsport Plant, classified under FSC 3120 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 3120-00-554-0449?

NSN 3120-00-554-0449 has 1 cross-referenced part number: 71123 (Textron Lycoming Inc Williamsport Plant).

What NSN replaces 3120-00-554-0449?

There are 4 known substitutes for 3120-00-554-0449: 3120-00-246-4997, 3110-00-278-7323, 4820-01-426-5615 and 1 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 71123?

Key specifications for 71123: Material: OIL LUBRICATING LUBRICATION; Body Outside Diameter: 1.5020 INCHES MINIMUM AND 1.5030 INCHES MAXIMUM IN; Corner Shape: SQUARE INSIDE LEFT CORNER; Overall Length: 0.7400 INCHES MINIMUM AND 0.7600 INCHES MAXIMUM IN. 10 total characteristics are documented in the Federal Logistics Information System.

Is NSN 3120-00-554-0449 still in active supply?

NSN 3120-00-554-0449 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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