PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

HF3QBearing,plain,rod End

Roller Bearing Company of America, Inc. · NSN 3120-00-453-6221 · FSC 3120 · No Item Name Available
Verified by PartsTable
NSN 3120-00-453-6221 — this item is cataloged by the U.S. Government under National Stock Number 3120-00-453-6221. Primary manufacturer part number: HF3Q.
Features
  • Bearing,plain,rod End — FSC 3120
  • Outer Member Width: 0.2500 INCHES MINIMUM AND 0.2550 INCHES MAXIMUM IN
  • Shank Thread Length: 0.5780 INCHES NOMINAL IN
  • Bore Center to Shank End Distance: 1.0620 INCHES MINIMUM AND 1.0720 INCHES MAXIMUM IN
  • Thread Class: 2B
  • Material: COPPER ALLOY OR STEEL RACE INSERT
  • Material: STEEL INNER MEMBER
  • Style Designator: BALL TYPE
Applications
  • Rotating machinery support and alignment
  • Shaft load distribution
  • Precision spindle assemblies
  • Applications requiring Copper Alloy or Steel Race Insert construction
General Description

The Bearing,plain,rod End, cataloged under National Stock Number 3120-00-453-6221, 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 18 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 6 commercial cross-references from 6 manufacturers, enabling identification through both NSN and commercial part number lookups. 10 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN3120-00-453-6221
Primary Part NumberHF3Q
Item NameBearing,plain,rod End
FSC / FSG3120 / 31 — No Item Name Available
ManufacturerRoller Bearing Company of America, Inc.
StatusACTIVE
Outer Member Width0.2500 INCHES MINIMUM AND 0.2550 INCHES MAXIMUM IN
Shank Thread Length0.5780 INCHES NOMINAL IN
Bore Center to Shank End Distance1.0620 INCHES MINIMUM AND 1.0720 INCHES MAXIMUM IN
Thread Class2B
MaterialCOPPER ALLOY OR STEEL RACE INSERT
MaterialSTEEL INNER MEMBER
Style DesignatorBALL TYPE
MaterialSTEEL ROD END BODY
Thread Series DesignatorUNF
Shank Width Across Wrench Flats0.3120 INCHES NOMINAL IN
Bore Diameter0.1895 INCHES MINIMUM AND 0.1915 INCHES MAXIMUM IN
Outer Member Outside Diameter0.6250 INCHES MINIMUM AND 0.6350 INCHES MAXIMUM IN
Thread DirectionRIGHT-HAND
Thread Quantity Per Inch32
Thread Diameter0.190 INCHES NOMINAL IN
Shank StyleINTERNALLY THREADED W/BEAD AND WRENCH FLATS AND INSPECTION HOLE
Inner Member Width0.3070 INCHES MINIMUM AND 0.3120 INCHES MAXIMUM IN
Inspection Hole Center to End Distance0.3120 INCHES NOMINAL IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 10
3110-00-516-5413056-6 INTERCHANGEABLE
Bearing,ball,annular
Lockheed Martin Corporation Div Rms - Mitchel Field
3120-00-780-9567 INTERCHANGEABLE
Bearing,plain,rod End
5340-00-978-9333TR3 INTERCHANGEABLE
Rod End,female
Rbc Transport Dynamics Corp Div Rbc Transport Dynamics
5998-01-099-5170TR-3 INTERCHANGEABLE
Holder,electrical Card
Powers Holdings Inc Dba Fire Brick Engineers Co Div Curtis Industries
5905-01-121-7781 INTERCHANGEABLE
Resistor,fixed,wire Wound,induct
8020-01-140-0952 INTERCHANGEABLE
Roller,paint
3120-01-174-5428TR-3 INTERCHANGEABLE
Bearing,plain,rod End
Wbparts Inc
6110-01-270-4513TR3 INTERCHANGEABLE
Contactor,magnetic
Reliant Heating and Controls Inc
6230-01-590-5429TR3 INTERCHANGEABLE
Flashlight
Viking International Protection
5340-01-618-6644TR3 INTERCHANGEABLE
Standoff,threaded,spacing
Thorlabs, Inc
Cross-Reference Index
Part NumberManufacturer
S1104-3 Textron Aviation Inc (USA)
HF3Q PRIMARY Roller Bearing Company of America, Inc. (USA)
REF3 PRIMARY Radial Bearing Corporation Dba Radial Bearing Corp of Connecticu Div Radial Bearing Llc (USA)
TR3 Stephens-Adamson Inc a Sub of Allis-Chalmers Corp (USA)
TR-3 Zf Industrieantriebe Witten Gmbh (DEU)
S1104-3 Cessna Aircraft Company Dba Textron Aviation (USA)
Related Parts
3110-00-516-5413INTERCHANGEABLE
BEARING,BALL,ANNULAR
056-6
3120-00-780-9567INTERCHANGEABLE
BEARING,PLAIN,ROD END
5340-00-978-9333INTERCHANGEABLE
ROD END,FEMALE
TR3
5998-01-099-5170INTERCHANGEABLE
HOLDER,ELECTRICAL CARD
TR-3
5905-01-121-7781INTERCHANGEABLE
RESISTOR,FIXED,WIRE WOUND,INDUCT
8020-01-140-0952INTERCHANGEABLE
ROLLER,PAINT
3120-01-174-5428INTERCHANGEABLE
BEARING,PLAIN,ROD END
TR-3
6110-01-270-4513INTERCHANGEABLE
CONTACTOR,MAGNETIC
TR3
6230-01-590-5429INTERCHANGEABLE
FLASHLIGHT
TR3
5340-01-618-6644INTERCHANGEABLE
STANDOFF,THREADED,SPACING
TR3

Frequently Asked Questions

What is NSN 3120-00-453-6221?

NSN 3120-00-453-6221 is a Bearing,plain,rod End, 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 3120-00-453-6221?

NSN 3120-00-453-6221 has 6 cross-referenced part numbers: S1104-3 (Textron Aviation Inc), HF3Q (Roller Bearing Company of America, Inc.), REF3 (Radial Bearing Corporation Dba Radial Bearing Corp of Connecticu Div Radial Bearing Llc), TR3 (Stephens-Adamson Inc a Sub of Allis-Chalmers Corp), TR-3 (Zf Industrieantriebe Witten Gmbh) and 1 more.

What NSN replaces 3120-00-453-6221?

There are 10 known substitutes for 3120-00-453-6221: 3110-00-516-5413, 3120-00-780-9567, 5340-00-978-9333 and 7 more. Verify interchangeability with system specifications before substitution.

What are the specifications of HF3Q?

Key specifications for HF3Q: Outer Member Width: 0.2500 INCHES MINIMUM AND 0.2550 INCHES MAXIMUM IN; Shank Thread Length: 0.5780 INCHES NOMINAL IN; Bore Center to Shank End Distance: 1.0620 INCHES MINIMUM AND 1.0720 INCHES MAXIMUM IN; Thread Class: 2B. 19 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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