PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

FB-68-7Bearing,sleeve

Altra Industrial Motion Corp. · NSN 3120-01-257-6978 · FSC 3120 · No Item Name Available
Verified by PartsTable
NSN 3120-01-257-6978 — this item is cataloged by the U.S. Government under National Stock Number 3120-01-257-6978. Primary manufacturer part number: FB-68-7.
Features
  • Bearing,sleeve — FSC 3120
  • Flange Width: 0.0938 INCHES NOMINAL IN
  • Flange Outside Diameter: 0.6850 INCHES MINIMUM AND 0.6900 INCHES MAXIMUM IN
  • Material: COPPER ALLOY 260 OVERALL
  • Material: OIL LUBRICATING LUBRICATION
  • Body Inside Diameter: 0.3760 INCHES MINIMUM AND 0.3770 INCHES MAXIMUM IN
  • Body Outside Diameter: 0.5010 INCHES MINIMUM AND 0.5020 INCHES MAXIMUM IN
  • 4 verified cross-references
Applications
  • Rotating machinery support and alignment
  • Shaft load distribution
  • Precision spindle assemblies
  • Applications requiring Copper Alloy 260 Overall construction
General Description

The Bearing,sleeve, cataloged under National Stock Number 3120-01-257-6978, 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 6 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 4 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 2 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN3120-01-257-6978
Primary Part NumberFB-68-7
Item NameBearing,sleeve
FSC / FSG3120 / 31 — No Item Name Available
ManufacturerAltra Industrial Motion Corp.
StatusACTIVE
Flange Width0.0938 INCHES NOMINAL IN
Flange Outside Diameter0.6850 INCHES MINIMUM AND 0.6900 INCHES MAXIMUM IN
MaterialCOPPER ALLOY 260 OVERALL
MaterialOIL LUBRICATING LUBRICATION
Body Inside Diameter0.3760 INCHES MINIMUM AND 0.3770 INCHES MAXIMUM IN
Body Outside Diameter0.5010 INCHES MINIMUM AND 0.5020 INCHES MAXIMUM IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 2
5360-00-366-764869-195 INTERCHANGEABLE
Spring,helical,compression
Eaton Corp Opns & Technical Center
4310-00-620-6880229875 INTERCHANGEABLE
Piston,compressor
Bendix Commercial Vehicle Systems Llc Dba Bendix Commercial Vehicle Systems
Cross-Reference Index
Part NumberManufacturer
FB-68-7 PRIMARY Altra Industrial Motion Corp. (USA)
MIL-B-5687 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
69195-FB-68-7 Altra Industrial Motion Corp. (USA)
69195 Altra Industrial Motion Corp. (USA)
Related Parts
5360-00-366-7648INTERCHANGEABLE
SPRING,HELICAL,COMPRESSION
69-195
4310-00-620-6880INTERCHANGEABLE
PISTON,COMPRESSOR
229875

Frequently Asked Questions

What is NSN 3120-01-257-6978?

NSN 3120-01-257-6978 is a Bearing,sleeve, manufactured by Altra Industrial Motion Corp., classified under FSC 3120 (No Item Name Available). Status: active.

What are the part numbers for NSN 3120-01-257-6978?

NSN 3120-01-257-6978 has 4 cross-referenced part numbers: FB-68-7 (Altra Industrial Motion Corp.), MIL-B-5687 (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M), 69195-FB-68-7 (Altra Industrial Motion Corp.), 69195 (Altra Industrial Motion Corp.).

What NSN replaces 3120-01-257-6978?

There are 2 known substitutes for 3120-01-257-6978: 5360-00-366-7648, 4310-00-620-6880. Verify interchangeability with system specifications before substitution.

What are the specifications of FB-68-7?

Key specifications for FB-68-7: Flange Width: 0.0938 INCHES NOMINAL IN; Flange Outside Diameter: 0.6850 INCHES MINIMUM AND 0.6900 INCHES MAXIMUM IN; End Item Identification: OPERATIONAL FLIGHT SIMULATOR,SPERRY CORP,MODEL F/A-18OFT; Material: COPPER ALLOY 260 OVERALL. 8 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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