PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

GB520AC1HBearing,plain,self-Aligning

Roller Bearing Company of America, Inc. · NSN 3120-00-046-6733 · FSC 3120 · No Item Name Available
Verified by PartsTable
NSN 3120-00-046-6733 — this item is cataloged by the U.S. Government under National Stock Number 3120-00-046-6733. Primary manufacturer part number: GB520AC1H.
Features
  • Bearing,plain,self-Aligning — FSC 3120
  • Surface Treatment: CHROMIUM LEFT END SURFACE
  • Surface Treatment: CHROMIUM SPHERICAL SURFACE
  • Bore Diameter: 1.4995 INCHES MINIMUM AND 1.5000 INCHES MAXIMUM IN
  • Surface Treatment: CHROMIUM RIGHT END SURFACE
  • Outer Member Outside Diameter: 2.4365 INCHES MINIMUM AND 2.4370 INCHES MAXIMUM IN
  • Style Designator: WITHOUT INSERT OR LINER
  • Material: STEEL COMP 630 OUTER RACE MEMBER
Applications
  • Rotating machinery support and alignment
  • Shaft load distribution
  • Precision spindle assemblies
  • Applications requiring Steel Comp 630 Outer Race Member construction
General Description

The Bearing,plain,self-Aligning, cataloged under National Stock Number 3120-00-046-6733, is classified within Federal Supply Class 3120 (No Item Name Available) of the Bearings group. The primary manufacturer of record is Roller Bearing Company of America, Inc.. Government technical data includes 11 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 11 commercial cross-references from 6 manufacturers, enabling identification through both NSN and commercial part number lookups. 4 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN3120-00-046-6733
Primary Part NumberGB520AC1H
Item NameBearing,plain,self-Aligning
FSC / FSG3120 / 31 — No Item Name Available
ManufacturerRoller Bearing Company of America, Inc.
StatusACTIVE
Surface TreatmentCHROMIUM LEFT END SURFACE
Surface TreatmentCHROMIUM SPHERICAL SURFACE
Bore Diameter1.4995 INCHES MINIMUM AND 1.5000 INCHES MAXIMUM IN
Surface TreatmentCHROMIUM RIGHT END SURFACE
Outer Member Outside Diameter2.4365 INCHES MINIMUM AND 2.4370 INCHES MAXIMUM IN
Style DesignatorWITHOUT INSERT OR LINER
MaterialSTEEL COMP 630 OUTER RACE MEMBER
MaterialSTEEL INNER MEMBER
Static Radial Load Rating155000 POUNDS LBS
Outer Member Width0.8000 INCHES MINIMUM AND 0.8100 INCHES MAXIMUM IN
Inner Member Width1.0950 INCHES MINIMUM AND 1.1000 INCHES MAXIMUM IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 4
5120-00-243-90725120-00-243-9072 INTERCHANGEABLE
Vise,bench and Pipe
General Services Administration Federal Supply Service
5975-00-774-832855-754 INTERCHANGEABLE
Conduit,metal,rigid
Dresser Industries Inc Leroi Div
4320-00-804-603955754 INTERCHANGEABLE
Block,pump Valve
Templeton Kenly and Co Inc
5360-01-249-155555754 INTERCHANGEABLE
Spring,helical,compression
Malabar
Cross-Reference Index
Part NumberManufacturer
LHSS24-35B Roller Bearing Company of America, Inc. (USA)
HSP24-114 U S Bearings (USA)
GB520AC1H PRIMARY Roller Bearing Company of America, Inc. (USA)
GB520AC1H PRIMARY Rbc Transport Dynamics Corp Div Rbc Transport Dynamics (USA)
GB520AC1H PRIMARY Sargent Aerospace & Defense, Llc Dba Kahr Bearings (USA)
GB520AC1H PRIMARY U S Bearings (USA)
GB52AC1H PRIMARY New Hampshire Ball Bearings Inc Div Astro Division (USA)
55754 PRIMARY Rbc Transport Dynamics Corp Div Rbc Transport Dynamics (USA)
ASSB24-56 New Hampshire Ball Bearings Inc Div Astro Division (USA)
GB520AC1H Northrop Grumman Systems Corporation (USA)
KSSB24-51 Sargent Aerospace & Defense, Llc Dba Kahr Bearings (USA)
Related Parts
5120-00-243-9072INTERCHANGEABLE
VISE,BENCH AND PIPE
5120-00-243-9072
5975-00-774-8328INTERCHANGEABLE
CONDUIT,METAL,RIGID
55-754
4320-00-804-6039INTERCHANGEABLE
BLOCK,PUMP VALVE
55754
5360-01-249-1555INTERCHANGEABLE
SPRING,HELICAL,COMPRESSION
55754

Frequently Asked Questions

What is NSN 3120-00-046-6733?

NSN 3120-00-046-6733 is a Bearing,plain,self-Aligning, manufactured by Roller Bearing Company of America, Inc., classified under FSC 3120 (No Item Name Available). Status: active.

What are the part numbers for NSN 3120-00-046-6733?

NSN 3120-00-046-6733 has 11 cross-referenced part numbers: LHSS24-35B (Roller Bearing Company of America, Inc.), HSP24-114 (U S Bearings), GB520AC1H (Roller Bearing Company of America, Inc.), GB520AC1H (Rbc Transport Dynamics Corp Div Rbc Transport Dynamics), GB520AC1H (Sargent Aerospace & Defense, Llc Dba Kahr Bearings) and 6 more.

What NSN replaces 3120-00-046-6733?

There are 4 known substitutes for 3120-00-046-6733: 5120-00-243-9072, 5975-00-774-8328, 4320-00-804-6039 and 1 more. Verify interchangeability with system specifications before substitution.

What are the specifications of GB520AC1H?

Key specifications for GB520AC1H: Surface Treatment: CHROMIUM LEFT END SURFACE; Surface Treatment: CHROMIUM SPHERICAL SURFACE; Bore Diameter: 1.4995 INCHES MINIMUM AND 1.5000 INCHES MAXIMUM IN; Surface Treatment: CHROMIUM RIGHT END SURFACE. 11 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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