PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

M68-8Bearing,sleeve

Altra Industrial Motion Corp. · NSN 3120-00-420-7790 · FSC 3120 · No Item Name Available
Verified by PartsTable
NSN 3120-00-420-7790 — this item is cataloged by the U.S. Government under National Stock Number 3120-00-420-7790. Primary manufacturer part number: M68-8.
Features
  • Bearing,sleeve — FSC 3120
  • Body Inside Diameter: 0.3750 INCHES NOMINAL IN
  • Body Outside Diameter: 0.5000 INCHES NOMINAL IN
  • Corner Shape: SQUARE ALL CORNERS
  • Style Designator: SOLID, PLAIN, NO OUTSIDE FLANGES
  • Material: COPPER ALLOY 932 OVERALL
  • 2 verified cross-references
  • Primary manufacturer: Altra Industrial Motion Corp.
Applications
  • Rotating machinery support and alignment
  • Shaft load distribution
  • Precision spindle assemblies
  • Applications requiring Copper Alloy 932 Overall construction
General Description

The Bearing,sleeve, cataloged under National Stock Number 3120-00-420-7790, 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 5 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 2 commercial cross-references from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 8 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN3120-00-420-7790
Primary Part NumberM68-8
Item NameBearing,sleeve
FSC / FSG3120 / 31 — No Item Name Available
ManufacturerAltra Industrial Motion Corp.
StatusACTIVE
Body Inside Diameter0.3750 INCHES NOMINAL IN
Body Outside Diameter0.5000 INCHES NOMINAL IN
Corner ShapeSQUARE ALL CORNERS
Style DesignatorSOLID, PLAIN, NO OUTSIDE FLANGES
MaterialCOPPER ALLOY 932 OVERALL
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 8
5935-00-106-894131-340 INTERCHANGEABLE
Connector,plug,electrical
Amphenol Corporation Div Amphenol Rf
5120-00-242-324931340 INTERCHANGEABLE
Wrench,pipe
Emerson Electric Co Ridgid/kollman Div
6105-00-308-9050 INTERCHANGEABLE
Winding,motor Field
5998-01-023-7927M688 INTERCHANGEABLE
Circuit Card Assembly
Compaq Federal Llc
4820-01-162-017826160-1 INTERCHANGEABLE
Cover,valve
Zurn Industries Inc
5985-01-256-9593ATT-0313-40-BNC-10 INTERCHANGEABLE
Attenuator,fixed
Cinch Connectivity Solutions Inc
3220-01-355-117931-340 INTERCHANGEABLE
Sander,disk and Belt
Delta Intl Machinery Corp
6680-01-522-9243 INTERCHANGEABLE
Indicator,sight,liquid
Cross-Reference Index
Part NumberManufacturer
M68-8 PRIMARY Altra Industrial Motion Corp. (USA)
31340 Altra Industrial Motion Corp. (USA)
Related Parts
5935-00-106-8941INTERCHANGEABLE
CONNECTOR,PLUG,ELECTRICAL
31-340
5120-00-242-3249INTERCHANGEABLE
WRENCH,PIPE
31340
6105-00-308-9050INTERCHANGEABLE
WINDING,MOTOR FIELD
5998-01-023-7927INTERCHANGEABLE
CIRCUIT CARD ASSEMBLY
M688
4820-01-162-0178INTERCHANGEABLE
COVER,VALVE
26160-1
5985-01-256-9593INTERCHANGEABLE
ATTENUATOR,FIXED
ATT-0313-40-BNC-10
3220-01-355-1179INTERCHANGEABLE
SANDER,DISK AND BELT
31-340
6680-01-522-9243INTERCHANGEABLE
INDICATOR,SIGHT,LIQUID

Frequently Asked Questions

What is NSN 3120-00-420-7790?

NSN 3120-00-420-7790 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 3120-00-420-7790?

NSN 3120-00-420-7790 has 2 cross-referenced part numbers: M68-8 (Altra Industrial Motion Corp.), 31340 (Altra Industrial Motion Corp.).

What NSN replaces 3120-00-420-7790?

There are 8 known substitutes for 3120-00-420-7790: 5935-00-106-8941, 5120-00-242-3249, 6105-00-308-9050 and 5 more. Verify interchangeability with system specifications before substitution.

What are the specifications of M68-8?

Key specifications for M68-8: Overall Length: 1.0000 INCHES NOMINAL IN; Body Inside Diameter: 0.3750 INCHES NOMINAL IN; Body Outside Diameter: 0.5000 INCHES NOMINAL IN; Corner Shape: SQUARE ALL CORNERS. 6 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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