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Alloy Steel Round Bar 4340

Alloy Steel Round Bar 4340

Alloy Steel Round Bar 4340 is normally used for the aerospaceautomotive, and natural gas/petroleum/oil applications. 4340 steel offers high strength, impact control, and machinability.

We also carry 4340 round bar that is Vacuum Arc Remelted (VAR).

Material Properties

Link IconAlloy Steel 4340 Product Guide|Link IconAlloy Steel 4340 Round Bar Tolerances

37 Results

1/2" Alloy Steel Round Bar 4340-Annealed Cold Finish Part # 25262

1/2" Alloy Steel Round Bar 4340-Annealed Cold Finish -
Part #: 25262
Best shipping value:
Single Heat Lot Required
Why are heat lots important?
Heat lots ensure consistent metal properties, full traceability, and quality control, which are critical for precision and reliability in your projects.

By selecting "Single Heat Lot Required" option, we ensure all cut pieces are sourced from a single heat lot for consistency in material characteristics.

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$10.19 for 1
$10.19 ea.
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Dimensions

  • Diameter: 0.5"
  • Temper: Annealed
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alloy-steel-round-bar-4340-normalized-cold-finished-turned-1superZoom
Material Meets These Standard(s): ASTM-A322,AMS-6415,ASTM-A108,AMS-6484(call for availability),ASTM-A29

Key Features

CUSTOM CUT MTR FREEMTRAvailable
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2" Alloy Steel Round Bar 4340-Annealed Hot Rolled Part # 25269

2" Alloy Steel Round Bar 4340-Annealed Hot Rolled -
Part #: 25269
Best shipping value:
Single Heat Lot Required
Why are heat lots important?
Heat lots ensure consistent metal properties, full traceability, and quality control, which are critical for precision and reliability in your projects.

By selecting "Single Heat Lot Required" option, we ensure all cut pieces are sourced from a single heat lot for consistency in material characteristics.

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$70.84 for 1
$70.84 ea.
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Dimensions

  • Diameter: 2"
  • Temper: Annealed
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Material Meets These Standard(s): ASTM-A322,AMS-6415(call for availability),AMS-6484(call for availability),ASTM-A29

Key Features

CUSTOM CUT MTR FREEMTRAvailable
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1" Alloy Steel Round Bar 4340-Normalized Cold Finish Part # 7391

1" Alloy Steel Round Bar 4340-Normalized Cold Finish -
Part #: 7391
Best shipping value:
Single Heat Lot Required
Why are heat lots important?
Heat lots ensure consistent metal properties, full traceability, and quality control, which are critical for precision and reliability in your projects.

By selecting "Single Heat Lot Required" option, we ensure all cut pieces are sourced from a single heat lot for consistency in material characteristics.

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$51.40 for 1
$51.40 ea.
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Dimensions

  • Diameter: 1"
  • Temper: Normalized
View more product details Click for more details
alloy-steel-round-bar-4340-normalized-cold-finished-turned-1superZoom
Material Meets These Standard(s): ASTM-A322,AMS-6415,ASTM-A108,AMS-6484,ASTM-A29

Key Features

CUSTOM CUT MTR FREEMTRAvailable
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2 1/2" Alloy Steel Round Bar 4340-Normalized and Tempered Part # 7403

2 1/2" Alloy Steel Round Bar 4340-Normalized and Tempered -
Part #: 7403
Best shipping value:
Single Heat Lot Required
Why are heat lots important?
Heat lots ensure consistent metal properties, full traceability, and quality control, which are critical for precision and reliability in your projects.

By selecting "Single Heat Lot Required" option, we ensure all cut pieces are sourced from a single heat lot for consistency in material characteristics.

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$165.68 for 1
$165.68 ea.
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Dimensions

  • Diameter: 2.5"
  • Temper: Normalized
View more product details Click for more details
alloy-steel-round-bar-4340-normalized-rough-turned-1superZoom
Material Meets These Standard(s): ASTM-A322,AMS-6415,AMS-6484,ASTM-A29

Key Features

CUSTOM CUT MTR FREEMTRAvailable
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1" Alloy Steel Round Bar 4340-Annealed Hot Rolled Part # 25265

1" Alloy Steel Round Bar 4340-Annealed Hot Rolled -
Part #: 25265
Best shipping value:
Single Heat Lot Required
Why are heat lots important?
Heat lots ensure consistent metal properties, full traceability, and quality control, which are critical for precision and reliability in your projects.

By selecting "Single Heat Lot Required" option, we ensure all cut pieces are sourced from a single heat lot for consistency in material characteristics.

QTY

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$30.12 for 1
$30.12 ea.
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Dimensions

  • Diameter: 1"
  • Temper: Annealed
View more product details Click for more details
alloy-steel-round-bar-4340-normalized-rough-turned-1superZoom
Material Meets These Standard(s): ASTM-A322,AMS-6415(call for availability),AMS-6484(call for availability),ASTM-A29

Key Features

CUSTOM CUT MTR FREEMTRAvailable
View more product details View more product details
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alloy-steel-round-bar-4340-normalized-rough-turned-1superZoom

1 1/2" Alloy Steel Round Bar 4340-Annealed Hot Rolled Part # 25268

1 1/2" Alloy Steel Round Bar 4340-Annealed Hot Rolled -
Part #: 25268
Best shipping value:
Single Heat Lot Required
Why are heat lots important?
Heat lots ensure consistent metal properties, full traceability, and quality control, which are critical for precision and reliability in your projects.

By selecting "Single Heat Lot Required" option, we ensure all cut pieces are sourced from a single heat lot for consistency in material characteristics.

QTY

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$57.00 for 1
$57.00 ea.
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Dimensions

  • Diameter: 1.5"
  • Temper: Annealed
View more product details Click for more details
alloy-steel-round-bar-4340-normalized-rough-turned-1superZoom
Material Meets These Standard(s): ASTM-A322,AMS-6415(call for availability),AMS-6484(call for availability),ASTM-A29

Key Features

CUSTOM CUT MTR FREEMTRAvailable
View more product details View more product details
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alloy-steel-round-bar-4340-normalized-rough-turned-1superZoom

3/4" Alloy Steel Round Bar 4340-Normalized Cold Finish Part # 7388

3/4" Alloy Steel Round Bar 4340-Normalized Cold Finish -
Part #: 7388
Best shipping value:
Single Heat Lot Required
Why are heat lots important?
Heat lots ensure consistent metal properties, full traceability, and quality control, which are critical for precision and reliability in your projects.

By selecting "Single Heat Lot Required" option, we ensure all cut pieces are sourced from a single heat lot for consistency in material characteristics.

QTY

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$42.60 for 1
$42.60 ea.
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Dimensions

  • Diameter: 0.75"
  • Temper: Normalized
View more product details Click for more details
alloy-steel-round-bar-4340-normalized-cold-finished-turned-1superZoom
Material Meets These Standard(s): ASTM-A322,AMS-6415,ASTM-A108,AMS-6484,ASTM-A29

Key Features

CUSTOM CUT MTR FREEMTRAvailable
View more product details View more product details
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1 1/4" Alloy Steel Round Bar 4340-Annealed Hot Rolled Part # 25267

1 1/4" Alloy Steel Round Bar 4340-Annealed Hot Rolled -
Part #: 25267
Best shipping value:
Single Heat Lot Required
Why are heat lots important?
Heat lots ensure consistent metal properties, full traceability, and quality control, which are critical for precision and reliability in your projects.

By selecting "Single Heat Lot Required" option, we ensure all cut pieces are sourced from a single heat lot for consistency in material characteristics.

QTY

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$41.41 for 1
$41.41 ea.
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Dimensions

  • Diameter: 1.25"
  • Temper: Annealed
View more product details Click for more details
alloy-steel-round-bar-4340-normalized-rough-turned-1superZoom
Material Meets These Standard(s): ASTM-A322,AMS-6415(call for availability),AMS-6484(call for availability),ASTM-A29

Key Features

CUSTOM CUT MTR FREEMTRAvailable
View more product details View more product details
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1/2" Alloy Steel Round Bar 4340-Normalized Cold Finish Part # 7385

1/2" Alloy Steel Round Bar 4340-Normalized Cold Finish -
Part #: 7385
Best shipping value:
Single Heat Lot Required
Why are heat lots important?
Heat lots ensure consistent metal properties, full traceability, and quality control, which are critical for precision and reliability in your projects.

By selecting "Single Heat Lot Required" option, we ensure all cut pieces are sourced from a single heat lot for consistency in material characteristics.

QTY

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$18.21 for 1
$18.21 ea.
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Dimensions

  • Diameter: 0.5"
  • Temper: Normalized
View more product details Click for more details
alloy-steel-round-bar-4340-normalized-cold-finished-turned-1superZoom
Material Meets These Standard(s): ASTM-A322,AMS-6415,ASTM-A108,AMS-6484,ASTM-A29

Key Features

CUSTOM CUT MTR FREEMTRAvailable
View more product details View more product details
View more product details Click for more details
alloy-steel-round-bar-4340-normalized-cold-finished-turned-1superZoom

1 3/8" Alloy Steel Round Bar 4340-Normalized Cold Finish Part # 7395

1 3/8" Alloy Steel Round Bar 4340-Normalized Cold Finish -
Part #: 7395
Best shipping value:
Single Heat Lot Required
Why are heat lots important?
Heat lots ensure consistent metal properties, full traceability, and quality control, which are critical for precision and reliability in your projects.

By selecting "Single Heat Lot Required" option, we ensure all cut pieces are sourced from a single heat lot for consistency in material characteristics.

QTY

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$125.38 for 1
$125.38 ea.
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Dimensions

  • Diameter: 1.375"
  • Temper: Normalized
View more product details Click for more details
alloy-steel-round-bar-4340-normalized-cold-finished-turned-1superZoom
Material Meets These Standard(s): ASTM-A322,AMS-6415,ASTM-A108,AMS-6484,ASTM-A29

Key Features

CUSTOM CUT MTR FREEMTRAvailable
View more product details View more product details
View more product details Click for more details
alloy-steel-round-bar-4340-normalized-cold-finished-turned-1superZoom

1 1/2" Alloy Steel Round Bar 4340-Normalized Cold Finish Part # 7396

1 1/2" Alloy Steel Round Bar 4340-Normalized Cold Finish -
Part #: 7396
Best shipping value:
Single Heat Lot Required
Why are heat lots important?
Heat lots ensure consistent metal properties, full traceability, and quality control, which are critical for precision and reliability in your projects.

By selecting "Single Heat Lot Required" option, we ensure all cut pieces are sourced from a single heat lot for consistency in material characteristics.

QTY

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$148.95 for 1
$148.95 ea.
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Dimensions

  • Diameter: 1.5"
  • Temper: Normalized
View more product details Click for more details
alloy-steel-round-bar-4340-normalized-cold-finished-turned-1superZoom
Material Meets These Standard(s): ASTM-A322,AMS-6415,ASTM-A108,AMS-6484,ASTM-A29

Key Features

CUSTOM CUT MTR FREEMTRAvailable
View more product details View more product details
View more product details Click for more details
alloy-steel-round-bar-4340-normalized-cold-finished-turned-1superZoom

1 5/8" Alloy Steel Round Bar 4340-Normalized Cold Finish Part # 7397

1 5/8" Alloy Steel Round Bar 4340-Normalized Cold Finish -
Part #: 7397
Best shipping value:
Single Heat Lot Required
Why are heat lots important?
Heat lots ensure consistent metal properties, full traceability, and quality control, which are critical for precision and reliability in your projects.

By selecting "Single Heat Lot Required" option, we ensure all cut pieces are sourced from a single heat lot for consistency in material characteristics.

QTY

Update
$138.66 for 1
$138.66 ea.
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Dimensions

  • Diameter: 1.625"
  • Temper: Normalized
View more product details Click for more details
alloy-steel-round-bar-4340-normalized-cold-finished-turned-1superZoom
Material Meets These Standard(s): ASTM-A322,AMS-6415,ASTM-A108,AMS-6484,ASTM-A29

Key Features

CUSTOM CUT MTR FREEMTRAvailable
View more product details View more product details
View more product details Click for more details
alloy-steel-round-bar-4340-normalized-cold-finished-turned-1superZoom

1 7/8" Alloy Steel Round Bar 4340-Normalized Cold Finish Part # 7399

1 7/8" Alloy Steel Round Bar 4340-Normalized Cold Finish -
Part #: 7399
Best shipping value:
Single Heat Lot Required
Why are heat lots important?
Heat lots ensure consistent metal properties, full traceability, and quality control, which are critical for precision and reliability in your projects.

By selecting "Single Heat Lot Required" option, we ensure all cut pieces are sourced from a single heat lot for consistency in material characteristics.

QTY

Update
$116.52 for 1
$116.52 ea.
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Dimensions

  • Diameter: 1.875"
  • Temper: Normalized
View more product details Click for more details
alloy-steel-round-bar-4340-normalized-cold-finished-turned-1superZoom
Material Meets These Standard(s): ASTM-A322,AMS-6415,ASTM-A108,AMS-6484,ASTM-A29

Key Features

CUSTOM CUT MTR FREEMTRAvailable
View more product details View more product details
View more product details Click for more details
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2 1/4" Alloy Steel Round Bar 4340-Normalized Rough Turned Part # 7401

2 1/4" Alloy Steel Round Bar 4340-Normalized Rough Turned -
Part #: 7401
Best shipping value:
Single Heat Lot Required
Why are heat lots important?
Heat lots ensure consistent metal properties, full traceability, and quality control, which are critical for precision and reliability in your projects.

By selecting "Single Heat Lot Required" option, we ensure all cut pieces are sourced from a single heat lot for consistency in material characteristics.

QTY

Update
$164.84 for 1
$164.84 ea.
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Dimensions

  • Diameter: 2.25"
  • Temper: Normalized
View more product details Click for more details
alloy-steel-round-bar-4340-normalized-rough-turned-1superZoom
Material Meets These Standard(s): ASTM-A322,AMS-6415,AMS-6484,ASTM-A29

Key Features

CUSTOM CUT MTR FREEMTRAvailable
View more product details View more product details
View more product details Click for more details
alloy-steel-round-bar-4340-normalized-rough-turned-1superZoom

2 3/4" Alloy Steel Round Bar 4340-Normalized Rough Turned Part # 7405

2 3/4" Alloy Steel Round Bar 4340-Normalized Rough Turned -
Part #: 7405
Best shipping value:
Single Heat Lot Required
Why are heat lots important?
Heat lots ensure consistent metal properties, full traceability, and quality control, which are critical for precision and reliability in your projects.

By selecting "Single Heat Lot Required" option, we ensure all cut pieces are sourced from a single heat lot for consistency in material characteristics.

QTY

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$109.96 for 1
$109.96 ea.
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Dimensions

  • Diameter: 2.75"
  • Temper: Normalized
View more product details Click for more details
alloy-steel-round-bar-4340-normalized-rough-turned-1superZoom
Material Meets These Standard(s): ASTM-A322,AMS-6415,AMS-6484,ASTM-A29

Key Features

CUSTOM CUT MTR FREEMTRAvailable
View more product details View more product details
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3" Alloy Steel Round Bar 4340-Normalized Rough Turned Part # 7406

3" Alloy Steel Round Bar 4340-Normalized Rough Turned -
Part #: 7406
Best shipping value:
Single Heat Lot Required
Why are heat lots important?
Heat lots ensure consistent metal properties, full traceability, and quality control, which are critical for precision and reliability in your projects.

By selecting "Single Heat Lot Required" option, we ensure all cut pieces are sourced from a single heat lot for consistency in material characteristics.

QTY

Update
$229.32 for 1
$229.32 ea.
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Dimensions

  • Diameter: 3"
  • Temper: Normalized
View more product details Click for more details
alloy-steel-round-bar-4340-normalized-rough-turned-1superZoom
Material Meets These Standard(s): ASTM-A322,AMS-6415,AMS-6484,ASTM-A29

Key Features

CUSTOM CUT MTR FREEMTRAvailable
View more product details View more product details
View more product details Click for more details
alloy-steel-round-bar-4340-normalized-rough-turned-1superZoom

3 1/2" Alloy Steel Round Bar 4340-Annealed Hot Rolled Part # 25270

3 1/2" Alloy Steel Round Bar 4340-Annealed Hot Rolled -
Part #: 25270
Best shipping value:
Single Heat Lot Required
Why are heat lots important?
Heat lots ensure consistent metal properties, full traceability, and quality control, which are critical for precision and reliability in your projects.

By selecting "Single Heat Lot Required" option, we ensure all cut pieces are sourced from a single heat lot for consistency in material characteristics.

QTY

Update
$446.71 for 1
$446.71 ea.
Camera Expand Details

Dimensions

  • Diameter: 3.5"
  • Temper: Annealed
View more product details Click for more details
alloy-steel-round-bar-4340-normalized-rough-turned-1superZoom
Material Meets These Standard(s): ASTM-A322,AMS-6415(call for availability),AMS-6484(call for availability),ASTM-A29

Key Features

CUSTOM CUT MTR FREEMTRAvailable
View more product details View more product details
View more product details Click for more details
alloy-steel-round-bar-4340-normalized-rough-turned-1superZoom

6 1/2" Alloy Steel Round Bar 4340-Normalized Rough Turned Part # 7419

6 1/2" Alloy Steel Round Bar 4340-Normalized Rough Turned -
Part #: 7419
Best shipping value:
Single Heat Lot Required
Why are heat lots important?
Heat lots ensure consistent metal properties, full traceability, and quality control, which are critical for precision and reliability in your projects.

By selecting "Single Heat Lot Required" option, we ensure all cut pieces are sourced from a single heat lot for consistency in material characteristics.

QTY

Update
$1020.39 for 1
$1020.39 ea.
Camera Expand Details

Dimensions

  • Diameter: 6.5"
  • Temper: Normalized
View more product details Click for more details
alloy-steel-round-bar-4340-normalized-rough-turned-1superZoom

Key Features

CUSTOM CUT MTR FREEMTRAvailable
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SALE! Select Cut Sizes

5/16" Alloy Steel Round Bar 4340-Normalized Cold Finish Part # 23268

5/16" Alloy Steel Round Bar 4340-Normalized Cold Finish -
Part #: 23268
Best shipping value:
Single Heat Lot Required
Why are heat lots important?
Heat lots ensure consistent metal properties, full traceability, and quality control, which are critical for precision and reliability in your projects.

By selecting "Single Heat Lot Required" option, we ensure all cut pieces are sourced from a single heat lot for consistency in material characteristics.

QTY

Update
$13.64 for 1
$13.64 ea.
Camera Expand Details

Dimensions

  • Diameter: 0.3125"
  • Temper: Normalized
View more product details Click for more details
alloy-steel-round-bar-4340-normalized-cold-finished-turned-1superZoom

Key Features

CUSTOM CUT MTR FREEMTRAvailable
View more product details View more product details
View more product details Click for more details
alloy-steel-round-bar-4340-normalized-cold-finished-turned-1superZoom

3/8" Alloy Steel Round Bar 4340-Normalized Cold Finish Part # 7383

3/8" Alloy Steel Round Bar 4340-Normalized Cold Finish -
Part #: 7383
Best shipping value:
Single Heat Lot Required
Why are heat lots important?
Heat lots ensure consistent metal properties, full traceability, and quality control, which are critical for precision and reliability in your projects.

By selecting "Single Heat Lot Required" option, we ensure all cut pieces are sourced from a single heat lot for consistency in material characteristics.

QTY

Update
$12.51 for 1
$12.51 ea.
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Dimensions

  • Diameter: 0.375"
  • Temper: Normalized
View more product details Click for more details
alloy-steel-round-bar-4340-normalized-cold-finished-turned-1superZoom
Material Meets These Standard(s): ASTM-A322,AMS-6415,ASTM-A108,AMS-6484,ASTM-A29

Key Features

CUSTOM CUT MTR FREEMTRAvailable
View more product details View more product details
View more product details Click for more details
alloy-steel-round-bar-4340-normalized-cold-finished-turned-1superZoom

7/16" Alloy Steel Round Bar 4340-Normalized Cold Finish Part # 7384

7/16" Alloy Steel Round Bar 4340-Normalized Cold Finish -
Part #: 7384
Best shipping value:
Single Heat Lot Required
Why are heat lots important?
Heat lots ensure consistent metal properties, full traceability, and quality control, which are critical for precision and reliability in your projects.

By selecting "Single Heat Lot Required" option, we ensure all cut pieces are sourced from a single heat lot for consistency in material characteristics.

QTY

Update
$23.83 for 1
$23.83 ea.
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Dimensions

  • Diameter: 0.4375"
  • Temper: Normalized
View more product details Click for more details
alloy-steel-round-bar-4340-normalized-cold-finished-turned-1superZoom
Material Meets These Standard(s): ASTM-A322,AMS-6415,ASTM-A108,AMS-6484,ASTM-A29

Key Features

CUSTOM CUT MTR FREEMTRAvailable
View more product details View more product details
View more product details Click for more details
alloy-steel-round-bar-4340-normalized-cold-finished-turned-1superZoom

5/8" Alloy Steel Round Bar 4340-Normalized Cold Finish Part # 7387

5/8" Alloy Steel Round Bar 4340-Normalized Cold Finish -
Part #: 7387
Best shipping value:
Single Heat Lot Required
Why are heat lots important?
Heat lots ensure consistent metal properties, full traceability, and quality control, which are critical for precision and reliability in your projects.

By selecting "Single Heat Lot Required" option, we ensure all cut pieces are sourced from a single heat lot for consistency in material characteristics.

QTY

Update
$31.45 for 1
$31.45 ea.
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Dimensions

  • Diameter: 0.625"
  • Temper: Normalized
View more product details Click for more details
alloy-steel-round-bar-4340-normalized-cold-finished-turned-1superZoom
Material Meets These Standard(s): ASTM-A322,AMS-6415,ASTM-A108,AMS-6484,ASTM-A29

Key Features

CUSTOM CUT MTR FREEMTRAvailable
View more product details View more product details
View more product details Click for more details
alloy-steel-round-bar-4340-normalized-cold-finished-turned-1superZoom

3/4" Alloy Steel Round Bar 4340-Annealed Cold Finish Part # 25263

3/4" Alloy Steel Round Bar 4340-Annealed Cold Finish -
Part #: 25263
Best shipping value:
Single Heat Lot Required
Why are heat lots important?
Heat lots ensure consistent metal properties, full traceability, and quality control, which are critical for precision and reliability in your projects.

By selecting "Single Heat Lot Required" option, we ensure all cut pieces are sourced from a single heat lot for consistency in material characteristics.

QTY

Update
$27.24 for 1
$27.24 ea.
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Dimensions

  • Diameter: 0.75"
  • Temper: Annealed
View more product details Click for more details
alloy-steel-round-bar-4340-normalized-cold-finished-turned-1superZoom
Material Meets These Standard(s): ASTM-A322

Key Features

CUSTOM CUT MTR FREEMTRAvailable
View more product details View more product details
View more product details Click for more details
alloy-steel-round-bar-4340-normalized-cold-finished-turned-1superZoom

7/8" Alloy Steel Round Bar 4340-Normalized Cold Finish Part # 7389

7/8" Alloy Steel Round Bar 4340-Normalized Cold Finish -
Part #: 7389
Best shipping value:
Single Heat Lot Required
Why are heat lots important?
Heat lots ensure consistent metal properties, full traceability, and quality control, which are critical for precision and reliability in your projects.

By selecting "Single Heat Lot Required" option, we ensure all cut pieces are sourced from a single heat lot for consistency in material characteristics.

QTY

Update
$49.65 for 1
$49.65 ea.
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Dimensions

  • Diameter: 0.875"
  • Temper: Normalized
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Material Meets These Standard(s): ASTM-A322,AMS-6415,ASTM-A108,AMS-6484,ASTM-A29

Key Features

CUSTOM CUT MTR FREEMTRAvailable
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7/8" Alloy Steel Round Bar 4340-Annealed Cold Finish Part # 25264

7/8" Alloy Steel Round Bar 4340-Annealed Cold Finish -
Part #: 25264
Best shipping value:
Single Heat Lot Required
Why are heat lots important?
Heat lots ensure consistent metal properties, full traceability, and quality control, which are critical for precision and reliability in your projects.

By selecting "Single Heat Lot Required" option, we ensure all cut pieces are sourced from a single heat lot for consistency in material characteristics.

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$35.62 for 1
$35.62 ea.
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Dimensions

  • Diameter: 0.875"
  • Temper: Annealed
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alloy-steel-round-bar-4340-normalized-cold-finished-turned-1superZoom
Material Meets These Standard(s): ASTM-A322,AMS-6415,ASTM-A108,AMS-6484(call for availability),ASTM-A29

Key Features

CUSTOM CUT MTR FREEMTRAvailable
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alloy-steel-round-bar-4340-normalized-cold-finished-turned-1superZoom

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