PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

646149Bearing Half,sleeve

Teledyne Industries Inc Teledyne Power Systems Div · NSN 3120-00-478-8672 · FSC 3120 · No Item Name Available
Verified by PartsTable
NSN 3120-00-478-8672 — this item is cataloged by the U.S. Government under National Stock Number 3120-00-478-8672. Primary manufacturer part number: 646149.
Features
  • Bearing Half,sleeve — FSC 3120
  • Corner Shape: SQUARE RIGHT FLANGE OUTSIDE LEFT CORNER
  • Corner Shape: ROUND RIGHT FLANGE BODY CORNER
  • Right Flange Width: 0.1290 INCHES MINIMUM AND 0.1310 INCHES MAXIMUM IN
  • Material Document and Classification: UNABLE TO DECODE
  • Left Flange Outside Diameter: 3.1900 INCHES NOMINAL IN
  • Corner Shape: SQUARE OUTSIDE RIGHT CORNER
  • Right Flange Outside Diameter: 3.1900 INCHES NOMINAL IN
Applications
  • Rotating machinery support and alignment
  • Shaft load distribution
  • Precision spindle assemblies
  • Applications requiring Nickel or Copper and Silver and Steel Comp 1022 Overall construction
General Description

The Bearing Half,sleeve, cataloged under National Stock Number 3120-00-478-8672, is classified within Federal Supply Class 3120 (No Item Name Available) of the Bearings group. The primary manufacturer of record is Teledyne Industries Inc Teledyne Power Systems Div. Government technical data includes 15 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 2 commercial cross-references from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 8 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN3120-00-478-8672
Primary Part Number646149
Item NameBearing Half,sleeve
FSC / FSG3120 / 31 — No Item Name Available
ManufacturerTeledyne Industries Inc Teledyne Power Systems Div
StatusCANCELLED
Corner ShapeSQUARE RIGHT FLANGE OUTSIDE LEFT CORNER
Corner ShapeROUND RIGHT FLANGE BODY CORNER
Right Flange Width0.1290 INCHES MINIMUM AND 0.1310 INCHES MAXIMUM IN
Material Document and ClassificationUNABLE TO DECODE
Left Flange Outside Diameter3.1900 INCHES NOMINAL IN
Corner ShapeSQUARE OUTSIDE RIGHT CORNER
Right Flange Outside Diameter3.1900 INCHES NOMINAL IN
Corner ShapeSQUARE LEFT FLANGE OUTSIDE RIGHT CORNER
Corner ShapeSQUARE OUTSIDE LEFT CORNER
Corner ShapeROUND LEFT FLANGE BODY CORNER
MaterialNICKEL OR COPPER AND SILVER AND STEEL COMP 1022 OVERALL
Surface TreatmentLEAD AND TIN ALLOY AND LEAD ALLOY AND TIN OVERALL
Corner ShapeROUND INSIDE RIGHT CORNER
Corner ShapeROUND INSIDE LEFT CORNER
Left Flange Width0.1290 INCHES MINIMUM AND 0.1310 INCHES MAXIMUM IN
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 8
3040-00-147-940240644 INTERCHANGEABLE
Shaft,shouldered
Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney
3020-00-382-2838646149 INTERCHANGEABLE
Gear,spur
Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier
1680-00-785-5425646149 INTERCHANGEABLE
Flange,output
Goodrich Corporation Dba Goodrich Corp
5930-00-812-8702C7-6778 INTERCHANGEABLE
Switch,thermostatic
United Electric Controls Company
5950-00-961-5607HB195 INTERCHANGEABLE
Transformer,audio Frequency
Magnetika Inc
2990-01-105-5674180-LTT2-60 INTERCHANGEABLE
Control Assembly,push-Pull
Cablecraft Motion Controls Llc Dba Tuthill Controls Group
4730-01-139-1592 INTERCHANGEABLE
Restrictor,fluid Flow
5133-01-460-237440644 INTERCHANGEABLE
Drill,twist
Precision Twist Drill Co
Cross-Reference Index
Part NumberManufacturer
646149 Teledyne Industries Inc Teledyne Power Systems Div (USA)
40644 Teledyne Industries Inc Teledyne Power Systems Div (USA)
Related Parts
3040-00-147-9402INTERCHANGEABLE
SHAFT,SHOULDERED
40644
3020-00-382-2838INTERCHANGEABLE
GEAR,SPUR
646149
1680-00-785-5425INTERCHANGEABLE
FLANGE,OUTPUT
646149
5930-00-812-8702INTERCHANGEABLE
SWITCH,THERMOSTATIC
C7-6778
5950-00-961-5607INTERCHANGEABLE
TRANSFORMER,AUDIO FREQUENCY
HB195
2990-01-105-5674INTERCHANGEABLE
CONTROL ASSEMBLY,PUSH-PULL
180-LTT2-60
4730-01-139-1592INTERCHANGEABLE
RESTRICTOR,FLUID FLOW
5133-01-460-2374INTERCHANGEABLE
DRILL,TWIST
40644

Frequently Asked Questions

What is NSN 3120-00-478-8672?

NSN 3120-00-478-8672 is a Bearing Half,sleeve, manufactured by Teledyne Industries Inc Teledyne Power Systems Div, classified under FSC 3120 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 3120-00-478-8672?

NSN 3120-00-478-8672 has 2 cross-referenced part numbers: 646149 (Teledyne Industries Inc Teledyne Power Systems Div), 40644 (Teledyne Industries Inc Teledyne Power Systems Div).

What NSN replaces 3120-00-478-8672?

There are 8 known substitutes for 3120-00-478-8672: 3040-00-147-9402, 3020-00-382-2838, 1680-00-785-5425 and 5 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 646149?

Key specifications for 646149: Corner Shape: SQUARE RIGHT FLANGE OUTSIDE LEFT CORNER; Corner Shape: ROUND RIGHT FLANGE BODY CORNER; Right Flange Width: 0.1290 INCHES MINIMUM AND 0.1310 INCHES MAXIMUM IN; Material Document and Classification: UNABLE TO DECODE. 16 total characteristics are documented in the Federal Logistics Information System.

Is NSN 3120-00-478-8672 still in active supply?

NSN 3120-00-478-8672 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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