PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

4781Bearing,sleeve

Eaton Corporation Dba Airflex Div Div Airflex · NSN 3120-00-339-4350 · FSC 3120 · No Item Name Available
Verified by PartsTable
NSN 3120-00-339-4350 — this item is cataloged by the U.S. Government under National Stock Number 3120-00-339-4350. Primary manufacturer part number: 4781.
Features
  • Bearing,sleeve — FSC 3120
  • Surface Treatment: TIN OUTER LAYER
  • Material: COPPER ALLOY 836 OUTER LAYER
  • 1 verified cross-reference
  • Primary manufacturer: Eaton Corporation Dba Airflex Div Div Airflex
Applications
  • Rotating machinery support and alignment
  • Shaft load distribution
  • Precision spindle assemblies
  • Applications requiring Copper Alloy 836 Outer Layer construction
General Description

The Bearing,sleeve, cataloged under National Stock Number 3120-00-339-4350, is classified within Federal Supply Class 3120 (No Item Name Available) of the Bearings group. The primary manufacturer of record is Eaton Corporation Dba Airflex Div Div Airflex. Government technical data includes 2 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: Active.

Technical Specifications
ParameterValue
NSN3120-00-339-4350
Primary Part Number4781
Item NameBearing,sleeve
FSC / FSG3120 / 31 — No Item Name Available
ManufacturerEaton Corporation Dba Airflex Div Div Airflex
StatusACTIVE
Surface TreatmentTIN OUTER LAYER
MaterialCOPPER ALLOY 836 OUTER LAYER
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 4
6680-00-891-3174478-1-006 INTERCHANGEABLE
Case Assembly,indicator
Simmonds Precision Products Inc
8335-01-204-5421112113 INTERCHANGEABLE
Insoles,footwear
Iem Orthopaedic Systems, Inc.
6135-01-469-1537CR1/3N-P INTERCHANGEABLE
Battery,nonrechargeable
Sanyo Energy (usa) Corporation
6515-01-574-324525608-986 INTERCHANGEABLE
Handle,surgical Knife,detachable
Vwr International, Llc Dba Vwr Scientific
Cross-Reference Index
Part NumberManufacturer
4781 PRIMARY Eaton Corporation Dba Airflex Div Div Airflex (USA)
Related Parts
6680-00-891-3174INTERCHANGEABLE
CASE ASSEMBLY,INDICATOR
478-1-006
8335-01-204-5421INTERCHANGEABLE
INSOLES,FOOTWEAR
112113
6135-01-469-1537INTERCHANGEABLE
BATTERY,NONRECHARGEABLE
CR1/3N-P
6515-01-574-3245INTERCHANGEABLE
HANDLE,SURGICAL KNIFE,DETACHABLE
25608-986

Frequently Asked Questions

What is NSN 3120-00-339-4350?

NSN 3120-00-339-4350 is a Bearing,sleeve, manufactured by Eaton Corporation Dba Airflex Div Div Airflex, classified under FSC 3120 (No Item Name Available). Status: active.

What are the part numbers for NSN 3120-00-339-4350?

NSN 3120-00-339-4350 has 1 cross-referenced part number: 4781 (Eaton Corporation Dba Airflex Div Div Airflex).

What NSN replaces 3120-00-339-4350?

There are 4 known substitutes for 3120-00-339-4350: 6680-00-891-3174, 8335-01-204-5421, 6135-01-469-1537 and 1 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 4781?

Key specifications for 4781: Surface Treatment: TIN OUTER LAYER; Material: COPPER ALLOY 836 OUTER LAYER. 2 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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