PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

B3-8Bearing,sleeve

W. M. Berg, Inc. · NSN 3120-01-142-9457 · FSC 3120 · No Item Name Available
Verified by PartsTable
NSN 3120-01-142-9457 — this item is cataloged by the U.S. Government under National Stock Number 3120-01-142-9457. Primary manufacturer part number: B3-8.
Features
  • Bearing,sleeve — FSC 3120
  • Corner Shape: SQUARE ALL CORNERS
  • Material: OIL LUBRICATING LUBRICATION
  • Material Document and Classification: MIL-L-6085 MIL SPEC SINGLE MATERIAL RESPONSE LUBRICATION
  • Body Outside Diameter: 0.4999 INCHES MINIMUM AND 0.5001 INCHES MAXIMUM IN
  • Body Inside Diameter: 0.1877 INCHES MINIMUM AND 0.1879 INCHES MAXIMUM IN
  • 3 verified cross-references
  • Primary manufacturer: W. M. Berg, Inc.
Applications
  • Rotating machinery support and alignment
  • Shaft load distribution
  • Precision spindle assemblies
  • Applications requiring Oil Lubricating Lubrication construction
General Description

The Bearing,sleeve, cataloged under National Stock Number 3120-01-142-9457, is classified within Federal Supply Class 3120 (No Item Name Available) of the Bearings group. The primary manufacturer of record is W. M. Berg, Inc.. Government technical data includes 5 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 3 commercial cross-references from 3 manufacturers, enabling identification through both NSN and commercial part number lookups. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN3120-01-142-9457
Primary Part NumberB3-8
Item NameBearing,sleeve
FSC / FSG3120 / 31 — No Item Name Available
ManufacturerW. M. Berg, Inc.
StatusACTIVE
Corner ShapeSQUARE ALL CORNERS
MaterialOIL LUBRICATING LUBRICATION
Material Document and ClassificationMIL-L-6085 MIL SPEC SINGLE MATERIAL RESPONSE LUBRICATION
Body Outside Diameter0.4999 INCHES MINIMUM AND 0.5001 INCHES MAXIMUM IN
Body Inside Diameter0.1877 INCHES MINIMUM AND 0.1879 INCHES MAXIMUM IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 12
3455-00-505-023715429 INTERCHANGEABLE
Cutter,milling,end
Brown & Sharpe, Inc. Div Precision Measuring Instruments, Tesa Usa
3030-00-529-0496 INTERCHANGEABLE
Belt,v
3110-00-554-2915R24-1B1 INTERCHANGEABLE
Bearing,ball,annular
Schatz Bearing Corporation Dba Schatz Bearing Corp
3030-00-585-9898 INTERCHANGEABLE
Belts,v,matched Set
4730-00-702-47426500 INTERCHANGEABLE
Coupling Half,quick Disconnect
Tuthill Corp Hansen Coupling Div
3030-00-834-4528 INTERCHANGEABLE
Belts,v,matched Set
5120-00-928-41267163A35 INTERCHANGEABLE
Blade,socket Head Screw Key
Mcmaster-Carr Supply Co
5365-00-950-6267B3-8 INTERCHANGEABLE
Shim
Roller Bearing Co of America, Inc Div Pic Design
3120-01-135-4203AM-2 INTERCHANGEABLE
Bearing,sleeve
Roller Bearing Co of America, Inc Div Pic Design
2990-01-196-2133 INTERCHANGEABLE
Muffler,exhaust
Cross-Reference Index
Part NumberManufacturer
B3-8 W. M. Berg, Inc. (USA)
GN-2 Designatronics Incorporated Div Sterling Instruments Div (USA)
OB76 Secs Inc (USA)
Related Parts
3455-00-505-0237INTERCHANGEABLE
CUTTER,MILLING,END
15429
3030-00-529-0496INTERCHANGEABLE
BELT,V
3110-00-554-2915INTERCHANGEABLE
BEARING,BALL,ANNULAR
R24-1B1
3030-00-585-9898INTERCHANGEABLE
BELTS,V,MATCHED SET
4730-00-702-4742INTERCHANGEABLE
COUPLING HALF,QUICK DISCONNECT
6500
3030-00-834-4528INTERCHANGEABLE
BELTS,V,MATCHED SET
5120-00-928-4126INTERCHANGEABLE
BLADE,SOCKET HEAD SCREW KEY
7163A35
5365-00-950-6267INTERCHANGEABLE
SHIM
B3-8
3120-01-135-4203INTERCHANGEABLE
BEARING,SLEEVE
AM-2
2990-01-196-2133INTERCHANGEABLE
MUFFLER,EXHAUST
3120-01-250-0581INTERCHANGEABLE
BEARING,SLEEVE
B38
7510-01-332-2097INTERCHANGEABLE
HOLDER,DISKETTE
B38

Frequently Asked Questions

What is NSN 3120-01-142-9457?

NSN 3120-01-142-9457 is a Bearing,sleeve, manufactured by W. M. Berg, Inc., classified under FSC 3120 (No Item Name Available). Status: active.

What are the part numbers for NSN 3120-01-142-9457?

NSN 3120-01-142-9457 has 3 cross-referenced part numbers: B3-8 (W. M. Berg, Inc.), GN-2 (Designatronics Incorporated Div Sterling Instruments Div), OB76 (Secs Inc).

What NSN replaces 3120-01-142-9457?

There are 12 known substitutes for 3120-01-142-9457: 3455-00-505-0237, 3030-00-529-0496, 3110-00-554-2915 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of B3-8?

Key specifications for B3-8: Corner Shape: SQUARE ALL CORNERS; Material: OIL LUBRICATING LUBRICATION; Material Document and Classification: MIL-L-6085 MIL SPEC SINGLE MATERIAL RESPONSE LUBRICATION; Body Outside Diameter: 0.4999 INCHES MINIMUM AND 0.5001 INCHES MAXIMUM IN. 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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