PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

12F10Bearing,sleeve

Cooper Industries Inc Dba Cooper Tools · NSN 3120-00-279-0550 · FSC 3120 · No Item Name Available
Verified by PartsTable
NSN 3120-00-279-0550 — this item is cataloged by the U.S. Government under National Stock Number 3120-00-279-0550. Primary manufacturer part number: 12F10.
Features
  • Bearing,sleeve — FSC 3120
  • Body Inside Diameter: 1.2490 INCHES MINIMUM AND 1.2510 INCHES MAXIMUM IN
  • Corner Shape: SQUARE ALL CORNERS
  • Material: COPPER ALLOY 932 OVERALL
  • Lubricant Accommodation Style: GROOVED CLOSED BOTH ENDS
  • Surface Groove Location and Quantity: 1 INTERNAL
  • Style Designator: SOLID, PLAIN, NO OUTSIDE FLANGES
  • Body Outside Diameter: 1.5010 INCHES MINIMUM AND 1.5030 INCHES MAXIMUM IN
Applications
  • Rotating machinery support and alignment
  • Shaft load distribution
  • Precision spindle assemblies
  • Applications requiring Copper Alloy 932 Overall construction
General Description

The Bearing,sleeve, cataloged under National Stock Number 3120-00-279-0550, is classified within Federal Supply Class 3120 (No Item Name Available) of the Bearings group. The primary manufacturer of record is Cooper Industries Inc Dba Cooper Tools. Government technical data includes 7 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 2 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 3 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN3120-00-279-0550
Primary Part Number12F10
Item NameBearing,sleeve
FSC / FSG3120 / 31 — No Item Name Available
ManufacturerCooper Industries Inc Dba Cooper Tools
StatusCANCELLED
Body Inside Diameter1.2490 INCHES MINIMUM AND 1.2510 INCHES MAXIMUM IN
Corner ShapeSQUARE ALL CORNERS
MaterialCOPPER ALLOY 932 OVERALL
Lubricant Accommodation StyleGROOVED CLOSED BOTH ENDS
Surface Groove Location and Quantity1 INTERNAL
Style DesignatorSOLID, PLAIN, NO OUTSIDE FLANGES
Body Outside Diameter1.5010 INCHES MINIMUM AND 1.5030 INCHES MAXIMUM IN
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 3
5961-00-071-9262 INTERCHANGEABLE
Semiconductor Device,diode
6130-00-490-490512F20 INTERCHANGEABLE
Power Supply
Acopian Technical Company
5961-00-978-907012F10 INTERCHANGEABLE
Semiconductor Device,diode
Infineon Technologies Americas Corp
Cross-Reference Index
Part NumberManufacturer
12F10 Cooper Industries Inc Dba Cooper Tools (USA)
12F10 Cooper Industries Industrial Machinery Div (USA)
Related Parts
5961-00-071-9262INTERCHANGEABLE
SEMICONDUCTOR DEVICE,DIODE
6130-00-490-4905INTERCHANGEABLE
POWER SUPPLY
12F20
5961-00-978-9070INTERCHANGEABLE
SEMICONDUCTOR DEVICE,DIODE
12F10

Frequently Asked Questions

What is NSN 3120-00-279-0550?

NSN 3120-00-279-0550 is a Bearing,sleeve, manufactured by Cooper Industries Inc Dba Cooper Tools, classified under FSC 3120 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 3120-00-279-0550?

NSN 3120-00-279-0550 has 2 cross-referenced part numbers: 12F10 (Cooper Industries Inc Dba Cooper Tools), 12F10 (Cooper Industries Industrial Machinery Div).

What NSN replaces 3120-00-279-0550?

There are 3 known substitutes for 3120-00-279-0550: 5961-00-071-9262, 6130-00-490-4905, 5961-00-978-9070. Verify interchangeability with system specifications before substitution.

What are the specifications of 12F10?

Key specifications for 12F10: Body Inside Diameter: 1.2490 INCHES MINIMUM AND 1.2510 INCHES MAXIMUM IN; Corner Shape: SQUARE ALL CORNERS; Material: COPPER ALLOY 932 OVERALL; Lubricant Accommodation Style: GROOVED CLOSED BOTH ENDS. 8 total characteristics are documented in the Federal Logistics Information System.

Is NSN 3120-00-279-0550 still in active supply?

NSN 3120-00-279-0550 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.
PartsTable Design LLC · partstable.com