PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

E779-1Bearing,sleeve

Whippany Actuation Systems, Llc · NSN 3120-00-874-4590 · FSC 3120 · No Item Name Available
Verified by PartsTable
NSN 3120-00-874-4590 — this item is cataloged by the U.S. Government under National Stock Number 3120-00-874-4590. Primary manufacturer part number: E779-1.
Features
  • Bearing,sleeve — FSC 3120
  • Flange Outside Diameter: 0.7450 INCHES MINIMUM AND 0.7550 INCHES MAXIMUM IN
  • Corner Shape: SQUARE INSIDE RIGHT CORNER
  • Flange Width: 0.0480 INCHES MINIMUM AND 0.0520 INCHES MAXIMUM IN
  • Body Outside Diameter: 0.3743 INCHES MINIMUM AND 0.3753 INCHES MAXIMUM IN
  • Material: COPPER ALLOY OVERALL
  • Body Inside Diameter: 0.2501 INCHES MINIMUM AND 0.2509 INCHES MAXIMUM IN
  • Corner Shape: SQUARE LEFT FLANGE OUTSIDE RIGHT CORNER
Applications
  • Rotating machinery support and alignment
  • Shaft load distribution
  • Precision spindle assemblies
  • Applications requiring Copper Alloy Overall construction
General Description

The Bearing,sleeve, cataloged under National Stock Number 3120-00-874-4590, is classified within Federal Supply Class 3120 (No Item Name Available) of the Bearings group. The primary manufacturer of record is Whippany Actuation Systems, Llc. Government technical data includes 13 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
NSN3120-00-874-4590
Primary Part NumberE779-1
Item NameBearing,sleeve
FSC / FSG3120 / 31 — No Item Name Available
ManufacturerWhippany Actuation Systems, Llc
StatusACTIVE
Flange Outside Diameter0.7450 INCHES MINIMUM AND 0.7550 INCHES MAXIMUM IN
Corner ShapeSQUARE INSIDE RIGHT CORNER
Flange Width0.0480 INCHES MINIMUM AND 0.0520 INCHES MAXIMUM IN
Body Outside Diameter0.3743 INCHES MINIMUM AND 0.3753 INCHES MAXIMUM IN
MaterialCOPPER ALLOY OVERALL
Body Inside Diameter0.2501 INCHES MINIMUM AND 0.2509 INCHES MAXIMUM IN
Corner ShapeSQUARE LEFT FLANGE OUTSIDE RIGHT CORNER
Material Document and ClassificationMIL-B-5697,TY 1,COMP A MIL SPEC SINGLE MATERIAL RESPONSE OVERALL
Corner ShapeSQUARE OUTSIDE RIGHT CORNER
Style DesignatorSOLID, EXTERNAL FLANGE ONE END
Corner ShapeSQUARE OUTSIDE LEFT CORNER
Corner ShapeSQUARE LEFT FLANGE BODY CORNER
Corner ShapeSQUARE INSIDE LEFT CORNER
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 1
4720-00-278-1111 INTERCHANGEABLE
Hose,nonmetallic
Cross-Reference Index
Part NumberManufacturer
E779-1 PRIMARY Whippany Actuation Systems, Llc (USA)
Related Parts
4720-00-278-1111INTERCHANGEABLE
HOSE,NONMETALLIC

Frequently Asked Questions

What is NSN 3120-00-874-4590?

NSN 3120-00-874-4590 is a Bearing,sleeve, manufactured by Whippany Actuation Systems, Llc, classified under FSC 3120 (No Item Name Available). Status: active.

What are the part numbers for NSN 3120-00-874-4590?

NSN 3120-00-874-4590 has 1 cross-referenced part number: E779-1 (Whippany Actuation Systems, Llc).

What NSN replaces 3120-00-874-4590?

There is 1 known substitute for 3120-00-874-4590: 4720-00-278-1111. Verify interchangeability with system specifications before substitution.

What are the specifications of E779-1?

Key specifications for E779-1: Flange Outside Diameter: 0.7450 INCHES MINIMUM AND 0.7550 INCHES MAXIMUM IN; Corner Shape: SQUARE INSIDE RIGHT CORNER; Flange Width: 0.0480 INCHES MINIMUM AND 0.0520 INCHES MAXIMUM IN; Body Outside Diameter: 0.3743 INCHES MINIMUM AND 0.3753 INCHES MAXIMUM IN. 14 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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