PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

B3-9Bearing,sleeve

W. M. Berg, Inc. · NSN 3120-01-305-9529 · FSC 3120 · No Item Name Available
Verified by PartsTable
NSN 3120-01-305-9529 — this item is cataloged by the U.S. Government under National Stock Number 3120-01-305-9529. Primary manufacturer part number: B3-9.
Features
  • Bearing,sleeve — FSC 3120
  • Material: COPPER ALLOY 841 OVERALL
  • Material: OIL LUBRICATING LUBRICATION
  • Body Outside Diameter: 0.6249 INCHES MINIMUM AND 0.6251 INCHES MAXIMUM IN
  • Body Inside Diameter: 0.2500 INCHES MINIMUM AND 0.2502 INCHES MAXIMUM IN
  • 1 verified cross-reference
  • Primary manufacturer: W. M. Berg, Inc.
Applications
  • Rotating machinery support and alignment
  • Shaft load distribution
  • Precision spindle assemblies
  • Applications requiring Copper Alloy 841 Overall construction
General Description

The Bearing,sleeve, cataloged under National Stock Number 3120-01-305-9529, 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 4 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. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN3120-01-305-9529
Primary Part NumberB3-9
Item NameBearing,sleeve
FSC / FSG3120 / 31 — No Item Name Available
ManufacturerW. M. Berg, Inc.
StatusACTIVE
MaterialCOPPER ALLOY 841 OVERALL
MaterialOIL LUBRICATING LUBRICATION
Body Outside Diameter0.6249 INCHES MINIMUM AND 0.6251 INCHES MAXIMUM IN
Body Inside Diameter0.2500 INCHES MINIMUM AND 0.2502 INCHES MAXIMUM IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 12
5330-00-139-6943 INTERCHANGEABLE
Seal
3110-00-203-4103158300-4 INTERCHANGEABLE
Bearing,ball,annular
Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier
2940-00-221-5791FT1028 INTERCHANGEABLE
Filter Element,fluid
Honeywell International Inc Dba Honeywell Div Consumer Products Group
3455-00-228-529894193 INTERCHANGEABLE
Cutter,milling,end
Jcorps Dba Lashundra Craig
5330-00-248-6093B39 INTERCHANGEABLE
Gasket
Insinger Machine Co
5330-00-328-9841B39 INTERCHANGEABLE
Packing,preformed
Sloan Valve Company
2940-00-497-633351258 INTERCHANGEABLE
Filter Element,fluid
Wix Corp
5365-00-808-38593185750 INTERCHANGEABLE
Shim
Honeywell International Inc. Dba Honeywell International Div Aerospace - Tempe (west Warner Road)
5342-01-132-9596B-39 INTERCHANGEABLE
Bumper
Teledyne Instruments Inc Dba Teledyne Analytical Instruments Div Teledyne Analytical Instruments
5330-01-190-5664 INTERCHANGEABLE
Gasket
Cross-Reference Index
Part NumberManufacturer
B3-9 W. M. Berg, Inc. (USA)
Related Parts
5330-00-139-6943INTERCHANGEABLE
SEAL
3110-00-203-4103INTERCHANGEABLE
BEARING,BALL,ANNULAR
158300-4
2940-00-221-5791INTERCHANGEABLE
FILTER ELEMENT,FLUID
FT1028
3455-00-228-5298INTERCHANGEABLE
CUTTER,MILLING,END
94193
5330-00-248-6093INTERCHANGEABLE
GASKET
B39
5330-00-328-9841INTERCHANGEABLE
PACKING,PREFORMED
B39
2940-00-497-6333INTERCHANGEABLE
FILTER ELEMENT,FLUID
51258
5365-00-808-3859INTERCHANGEABLE
SHIM
3185750
5342-01-132-9596INTERCHANGEABLE
BUMPER
B-39
5330-01-190-5664INTERCHANGEABLE
GASKET
3130-01-197-6004INTERCHANGEABLE
BEARING
4397499
3530-01-280-4268INTERCHANGEABLE
GUIDE,THREAD,SEWING MACHINE
B39

Frequently Asked Questions

What is NSN 3120-01-305-9529?

NSN 3120-01-305-9529 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 3120-01-305-9529?

NSN 3120-01-305-9529 has 1 cross-referenced part number: B3-9 (W. M. Berg, Inc.).

What NSN replaces 3120-01-305-9529?

There are 12 known substitutes for 3120-01-305-9529: 5330-00-139-6943, 3110-00-203-4103, 2940-00-221-5791 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of B3-9?

Key specifications for B3-9: Material: COPPER ALLOY 841 OVERALL; Material: OIL LUBRICATING LUBRICATION; Body Outside Diameter: 0.6249 INCHES MINIMUM AND 0.6251 INCHES MAXIMUM IN; Overall Length: 0.1910 INCHES MINIMUM AND 0.1960 INCHES MAXIMUM IN. 5 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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