PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

5BBearing Half,sleeve

Curtiss-Wright Electro-Mechanical Corp Dba Steam & Air Solutions Div Curtiss-Wright Steam and Air Solutions · NSN 3120-00-148-6903 · FSC 3120 · No Item Name Available
Verified by PartsTable
NSN 3120-00-148-6903 — this item is cataloged by the U.S. Government under National Stock Number 3120-00-148-6903. Primary manufacturer part number: 5B.
Features
  • Bearing Half,sleeve — FSC 3120
  • 4 verified cross-references
  • Primary manufacturer: Curtiss-Wright Electro-Mechanical Corp Dba Steam & Air Solutions Div Curtiss-Wright Steam and Air Solutions
Applications
  • Rotating machinery support and alignment
  • Shaft load distribution
  • Precision spindle assemblies
General Description

The Bearing Half,sleeve, cataloged under National Stock Number 3120-00-148-6903, is classified within Federal Supply Class 3120 (No Item Name Available) of the Bearings group. The primary manufacturer of record is Curtiss-Wright Electro-Mechanical Corp Dba Steam & Air Solutions Div Curtiss-Wright Steam and Air Solutions. This item has 4 commercial cross-references from 4 manufacturers, enabling identification through both NSN and commercial part number lookups. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Catalog Facts
Item NameBearing Half,sleeve
FSC / FSG3120 — No Item Name Available (FSG 31)
ManufacturersSiemens Energy, Inc. Dba Dresser-Rand (CAGE 0AT62); Curtiss-Wright Electro-Mechanical Corp Dba Steam & Air Solutions Div Curtiss-Wright Steam and Air Solutions (CAGE 8FGX3); Dresser-Rand Co Worthington Compressor Opn a Joint Venture (CAGE 93236); Curtiss-Wright Electro-Mechanical Corporation Dba Curtiss-Wright Steam and Air Solutions Div Steam and Air Solutions (CAGE 830Q4)
Technical Specifications
ParameterValue
NSN3120-00-148-6903
Primary Part Number5B
Item NameBearing Half,sleeve
FSC / FSG3120 / 31 — No Item Name Available
ManufacturerCurtiss-Wright Electro-Mechanical Corp Dba Steam & Air Solutions Div Curtiss-Wright Steam and Air Solutions
StatusACTIVE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 12
3110-00-156-1715 INTERCHANGEABLE
Bearing,ball,thrust
5120-00-177-6872 INTERCHANGEABLE
Key,socket Head Screw
5815-00-221-5434 INTERCHANGEABLE
Holder,chart
6625-00-247-61985B INTERCHANGEABLE
Plug-in Unit,electrical-Electron
Bird Electronic Corporation Div Bird Electronic Corp
6135-00-248-4102 INTERCHANGEABLE
Battery,nonrechargeable
5340-00-269-49665B INTERCHANGEABLE
Hanger,pipe
Minerallac Electric Co
2805-00-383-8812022384 INTERCHANGEABLE
Insert,engine Valve Seat
Caterpillar Inc Div Caterpillar Defense
5315-00-482-1480 INTERCHANGEABLE
Pin
5120-00-546-7014 INTERCHANGEABLE
Key,socket Head Screw
6730-00-942-0924 INTERCHANGEABLE
Viewer,still Picture
Cross-Reference Index
Part NumberManufacturer
5B Siemens Energy, Inc. Dba Dresser-Rand (USA)
5B PRIMARY Curtiss-Wright Electro-Mechanical Corp Dba Steam & Air Solutions Div Curtiss-Wright Steam and Air Solutions (USA)
5B Dresser-Rand Co Worthington Compressor Opn a Joint Venture (USA)
5B Curtiss-Wright Electro-Mechanical Corporation Dba Curtiss-Wright Steam and Air Solutions Div Steam and Air Solutions (USA)
Related Parts
3110-00-156-1715INTERCHANGEABLE
BEARING,BALL,THRUST
5120-00-177-6872INTERCHANGEABLE
KEY,SOCKET HEAD SCREW
5815-00-221-5434INTERCHANGEABLE
HOLDER,CHART
6625-00-247-6198INTERCHANGEABLE
PLUG-IN UNIT,ELECTRICAL-ELECTRON
5B
6135-00-248-4102INTERCHANGEABLE
BATTERY,NONRECHARGEABLE
5340-00-269-4966INTERCHANGEABLE
HANGER,PIPE
5B
2805-00-383-8812INTERCHANGEABLE
INSERT,ENGINE VALVE SEAT
022384
5315-00-482-1480INTERCHANGEABLE
PIN
5120-00-546-7014INTERCHANGEABLE
KEY,SOCKET HEAD SCREW
6730-00-942-0924INTERCHANGEABLE
VIEWER,STILL PICTURE
6210-00-990-4761INTERCHANGEABLE
LIGHT,INDICATOR
5B
5905-01-155-0820INTERCHANGEABLE
HOLDER,RESISTOR
5B

Frequently Asked Questions

What is NSN 3120-00-148-6903?

NSN 3120-00-148-6903 is a Bearing Half,sleeve, manufactured by Curtiss-Wright Electro-Mechanical Corp Dba Steam & Air Solutions Div Curtiss-Wright Steam and Air Solutions, classified under FSC 3120 (No Item Name Available). Status: active.

What are the part numbers for NSN 3120-00-148-6903?

NSN 3120-00-148-6903 has 4 cross-referenced part numbers: 5B (Siemens Energy, Inc. Dba Dresser-Rand), 5B (Curtiss-Wright Electro-Mechanical Corp Dba Steam & Air Solutions Div Curtiss-Wright Steam and Air Solutions), 5B (Dresser-Rand Co Worthington Compressor Opn a Joint Venture), 5B (Curtiss-Wright Electro-Mechanical Corporation Dba Curtiss-Wright Steam and Air Solutions Div Steam and Air Solutions).

What NSN replaces 3120-00-148-6903?

There are 12 known substitutes for 3120-00-148-6903: 3110-00-156-1715, 5120-00-177-6872, 5815-00-221-5434 and 9 more. Verify interchangeability with system specifications before substitution.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
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