PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

348125Bearing,sleeve

Lockheed Martin Corp · NSN 3120-00-294-0139 · FSC 3120 · No Item Name Available
Verified by PartsTable
NSN 3120-00-294-0139 — this item is cataloged by the U.S. Government under National Stock Number 3120-00-294-0139. Primary manufacturer part number: 348125.
Features
  • Bearing,sleeve — FSC 3120
  • Surface Finish: 40.0 MICROINCHES INSIDE DIAMETER SURFACE OF BODY
  • Material: STEEL COMP 8630 OVERALL
  • Material: LUBRICANT LUBRICATION
  • Surface Finish: 250.0 MICROINCHES RIGHT END SURFACE OF BODY
  • Surface Finish: 250.0 MICROINCHES LEFT END SURFACE OF BODY
  • Style Designator: SOLID, PLAIN, NO OUTSIDE FLANGES
  • Surface Finish: 40.0 MICROINCHES OUTSIDE DIAMETER SURFACE OF BODY
Applications
  • Rotating machinery support and alignment
  • Shaft load distribution
  • Precision spindle assemblies
  • Applications requiring Steel Comp 8630 Overall construction
General Description

The Bearing,sleeve, cataloged under National Stock Number 3120-00-294-0139, is classified within Federal Supply Class 3120 (No Item Name Available) of the Bearings group. The primary manufacturer of record is Lockheed Martin Corp. Government technical data includes 11 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. 1 verified substitute exists in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN3120-00-294-0139
Primary Part Number348125
Item NameBearing,sleeve
FSC / FSG3120 / 31 — No Item Name Available
ManufacturerLockheed Martin Corp
StatusACTIVE
Surface Finish40.0 MICROINCHES INSIDE DIAMETER SURFACE OF BODY
MaterialSTEEL COMP 8630 OVERALL
MaterialLUBRICANT LUBRICATION
Surface Finish250.0 MICROINCHES RIGHT END SURFACE OF BODY
Surface Finish250.0 MICROINCHES LEFT END SURFACE OF BODY
Style DesignatorSOLID, PLAIN, NO OUTSIDE FLANGES
Surface Finish40.0 MICROINCHES OUTSIDE DIAMETER SURFACE OF BODY
Material Document and ClassificationMIL-S-6050 MIL SPEC SINGLE MATERIAL RESPONSE OR AN-S-9 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
Corner ShapeSQUARE ALL CORNERS
Body Inside Diameter0.2517 INCHES MINIMUM AND 0.2525 INCHES MAXIMUM IN
Body Outside Diameter0.3715 INCHES MINIMUM AND 0.3726 INCHES MAXIMUM IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 1
4330-00-264-0787 INTERCHANGEABLE
Ring,control,fluid Flow
Cross-Reference Index
Part NumberManufacturer
348125 PRIMARY Lockheed Martin Corp (USA)
Related Parts
4330-00-264-0787INTERCHANGEABLE
RING,CONTROL,FLUID FLOW

Frequently Asked Questions

What is NSN 3120-00-294-0139?

NSN 3120-00-294-0139 is a Bearing,sleeve, manufactured by Lockheed Martin Corp, classified under FSC 3120 (No Item Name Available). Status: active.

What are the part numbers for NSN 3120-00-294-0139?

NSN 3120-00-294-0139 has 1 cross-referenced part number: 348125 (Lockheed Martin Corp).

What NSN replaces 3120-00-294-0139?

There is 1 known substitute for 3120-00-294-0139: 4330-00-264-0787. Verify interchangeability with system specifications before substitution.

What are the specifications of 348125?

Key specifications for 348125: Surface Finish: 40.0 MICROINCHES INSIDE DIAMETER SURFACE OF BODY; Material: STEEL COMP 8630 OVERALL; Material: LUBRICANT LUBRICATION; Surface Finish: 250.0 MICROINCHES RIGHT END SURFACE OF BODY. 12 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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