PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

FB68-4Bearing,sleeve

Altra Industrial Motion Corp. · NSN 3120-00-580-3718 · FSC 3120 · No Item Name Available
Verified by PartsTable
NSN 3120-00-580-3718 — this item is cataloged by the U.S. Government under National Stock Number 3120-00-580-3718. Primary manufacturer part number: FB68-4.
Features
  • Bearing,sleeve — FSC 3120
  • Body Inside Diameter: 0.3760 INCHES MINIMUM AND 0.3770 INCHES MAXIMUM IN
  • Material: LUBRICANT LUBRICATION
  • Corner Shape: SQUARE LEFT FLANGE OUTSIDE RIGHT CORNER
  • Corner Shape: SQUARE LEFT FLANGE BODY CORNER
  • Corner Shape: SQUARE INSIDE LEFT CORNER
  • Corner Shape: SQUARE INSIDE RIGHT CORNER
  • Corner Shape: SQUARE OUTSIDE LEFT CORNER
Applications
  • Rotating machinery support and alignment
  • Shaft load distribution
  • Precision spindle assemblies
  • Applications requiring Lubricant Lubrication construction
General Description

The Bearing,sleeve, cataloged under National Stock Number 3120-00-580-3718, is classified within Federal Supply Class 3120 (No Item Name Available) of the Bearings group. The primary manufacturer of record is Altra Industrial Motion Corp.. Government technical data includes 13 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 6 commercial cross-references from 6 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
NSN3120-00-580-3718
Primary Part NumberFB68-4
Item NameBearing,sleeve
FSC / FSG3120 / 31 — No Item Name Available
ManufacturerAltra Industrial Motion Corp.
StatusCANCELLED
Body Inside Diameter0.3760 INCHES MINIMUM AND 0.3770 INCHES MAXIMUM IN
MaterialLUBRICANT LUBRICATION
Corner ShapeSQUARE LEFT FLANGE OUTSIDE RIGHT CORNER
Corner ShapeSQUARE LEFT FLANGE BODY CORNER
Corner ShapeSQUARE INSIDE LEFT CORNER
Corner ShapeSQUARE INSIDE RIGHT CORNER
Corner ShapeSQUARE OUTSIDE LEFT CORNER
Style DesignatorSOLID, EXTERNAL FLANGE ONE END
Corner ShapeSQUARE OUTSIDE RIGHT CORNER
Flange Outside Diameter0.6850 INCHES MINIMUM AND 0.6900 INCHES MAXIMUM IN
Flange Width0.0938 INCHES NOMINAL IN
MaterialCOPPER ALLOY OVERALL
Body Outside Diameter0.5010 INCHES MINIMUM AND 0.5020 INCHES MAXIMUM IN
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 3
5305-00-183-0248 INTERCHANGEABLE
Screw,externally Relieved Body
5130-01-046-4957 INTERCHANGEABLE
Brush,fiber,rotary Wheel
4010-01-495-4393225080-0 INTERCHANGEABLE
Wire Rope Assembly Set
Curtiss-Wright Flow Control Service, Llc Dba Engineered Arresting Systems - Esco Div Cw Flow Control Svc Llc Dba
Cross-Reference Index
Part NumberManufacturer
03340001-011 Bull Hn Information Systems Inc (USA)
21529 Master Machine Products Corp (USA)
714005-104 Capstan Ag Systems, Inc Dba Remex (USA)
03340001-011 Getronics Government Solutions Llc (USA)
401-0157 Continental Electronics Corp (USA)
FB68-4 PRIMARY Altra Industrial Motion Corp. (USA)
Related Parts
5305-00-183-0248INTERCHANGEABLE
SCREW,EXTERNALLY RELIEVED BODY
5130-01-046-4957INTERCHANGEABLE
BRUSH,FIBER,ROTARY WHEEL
4010-01-495-4393INTERCHANGEABLE
WIRE ROPE ASSEMBLY SET
225080-0

Frequently Asked Questions

What is NSN 3120-00-580-3718?

NSN 3120-00-580-3718 is a Bearing,sleeve, manufactured by Altra Industrial Motion Corp., classified under FSC 3120 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 3120-00-580-3718?

NSN 3120-00-580-3718 has 6 cross-referenced part numbers: 03340001-011 (Bull Hn Information Systems Inc), 21529 (Master Machine Products Corp), 714005-104 (Capstan Ag Systems, Inc Dba Remex), 03340001-011 (Getronics Government Solutions Llc), 401-0157 (Continental Electronics Corp) and 1 more.

What NSN replaces 3120-00-580-3718?

There are 3 known substitutes for 3120-00-580-3718: 5305-00-183-0248, 5130-01-046-4957, 4010-01-495-4393. Verify interchangeability with system specifications before substitution.

What are the specifications of FB68-4?

Key specifications for FB68-4: Body Inside Diameter: 0.3760 INCHES MINIMUM AND 0.3770 INCHES MAXIMUM IN; Overall Length: 0.5000 INCHES NOMINAL IN; Material: LUBRICANT LUBRICATION; Corner Shape: SQUARE LEFT FLANGE OUTSIDE RIGHT CORNER. 14 total characteristics are documented in the Federal Logistics Information System.

Is NSN 3120-00-580-3718 still in active supply?

NSN 3120-00-580-3718 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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