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4142

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4142 Product Guide Product   | 4142 Alloy Steel Tolerance Guide product

Alloy Steel 4142 is a medium carbon alloy steel with excellent toughness, ductility, wear resistance, and strength, 4142 is popular for a wide range of applications. It can be easily machined in the annealed state, but post treatment machining should be avoided. It is typically used in cams, drill collars, bolts, couplings, reamers axles, shafting, piston rods, rams, hydraulic shafts, gears, sprockets, valves, spindles, tools, boring tools, and other heavy duty machining components.

 

We carry 4142 alloy steel in rectangle bar.

 

Relevant Knowledge Hub Resources: 5 Reasons to Cut-to-Size | Understanding Steel

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1/2" x 3 1/2" Alloy Steel Rectangle Bar 4142-Prehardened Part # 19221

1/2" x 3 1/2" Alloy Steel Rectangle Bar 4142-Prehardened -
Part #: 19221
Select a Cut Size
  • 18″ (18 in.) - $249.00 ea.
  • 36″ (3 ft.) - $415.78 ea.
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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$249.00 for 1
$249.00 ea.
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Dimensions

  • Thickness: 0.5"
  • Width: 3.5"
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Material Meets These Standard(s): ASTM-A322

Key Features

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1/2" x 3/4" Alloy Steel Rectangle Bar 4142-Prehardened Part # 19145

1/2" x 3/4" Alloy Steel Rectangle Bar 4142-Prehardened -
Part #: 19145
Select a Cut Size
  • 18″ (18 in.) - $92.00 ea.
  • 36″ (3 ft.) - $153.58 ea.
  • 72″ (6 ft.) - $291.69 ea.
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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$92.00 for 1
$92.00 ea.
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Dimensions

  • Thickness: 0.5"
  • Width: 0.75"
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Material Meets These Standard(s): ASTM-A322

Key Features

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1/2" x 1 1/4" Alloy Steel Rectangle Bar 4142-Prehardened Part # 19162

1/2" x 1 1/4" Alloy Steel Rectangle Bar 4142-Prehardened -
Part #: 19162
Select a Cut Size
  • 18″ (18 in.) - $116.98 ea.
  • 36″ (3 ft.) - $195.24 ea.
  • 72″ (6 ft.) - $370.75 ea.
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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$116.98 for 1
$116.98 ea.
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Dimensions

  • Thickness: 0.5"
  • Width: 1.25"
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Material Meets These Standard(s): ASTM-A322

Key Features

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1/2" Alloy Steel Square Bar 4142-Prehardened Part # 19358

1/2" Alloy Steel Square Bar 4142-Prehardened -
Part #: 19358
Select a Cut Size
  • 18″ (18 in.) - $83.93 ea.
  • 36″ (3 ft.) - $140.11 ea.
  • 72″ (6 ft.) - $266.11 ea.
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
$83.93 for 1
$83.93 ea.
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Dimensions

  • Height: 0.5"
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Material Meets These Standard(s): ASTM-A322

Key Features

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1/2" x 4" Alloy Steel Rectangle Bar 4142-Prehardened Part # 19231

1/2" x 4" Alloy Steel Rectangle Bar 4142-Prehardened -
Part #: 19231
Select a Cut Size
  • 18″ (18 in.) - $254.00 ea.
  • 36″ (3 ft.) - $424.18 ea.
  • 72″ (6 ft.) - $805.54 ea.
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
$254.00 for 1
$254.00 ea.
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Dimensions

  • Thickness: 0.5"
  • Width: 4"
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Material Meets These Standard(s): ASTM-A322

Key Features

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1/2" x 5/8" Alloy Steel Rectangle Bar 4142-Prehardened Part # 19137

1/2" x 5/8" Alloy Steel Rectangle Bar 4142-Prehardened -
Part #: 19137
Select a Cut Size
  • 18″ (18 in.) - $89.23 ea.
  • 36″ (3 ft.) - $148.92 ea.
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
$89.23 for 1
$89.23 ea.
Expand Details

Dimensions

  • Thickness: 0.5"
  • Width: 0.625"
Click for more details alloy-steel-rectangle-bar-4142-prehardened-1superZoom
Material Meets These Standard(s): ASTM-A322

Key Features

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1/2" x 1" Alloy Steel Rectangle Bar 4142-Prehardened Part # 19154

1/2" x 1" Alloy Steel Rectangle Bar 4142-Prehardened -
Part #: 19154
Select a Cut Size
  • 18″ (18 in.) - $106.35 ea.
  • 36″ (3 ft.) - $177.62 ea.
  • 72″ (6 ft.) - $337.31 ea.
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
$106.35 for 1
$106.35 ea.
Expand Details

Dimensions

  • Thickness: 0.5"
  • Width: 1"
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Material Meets These Standard(s): ASTM-A322

Key Features

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1/2" x 1 1/2" Alloy Steel Rectangle Bar 4142-Prehardened Part # 19173

1/2" x 1 1/2" Alloy Steel Rectangle Bar 4142-Prehardened -
Part #: 19173
Select a Cut Size
  • 18″ (18 in.) - $129.43 ea.
  • 36″ (3 ft.) - $216.17 ea.
  • 72″ (6 ft.) - $410.52 ea.
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
$129.43 for 1
$129.43 ea.
Expand Details

Dimensions

  • Thickness: 0.5"
  • Width: 1.5"
Click for more details alloy-steel-rectangle-bar-4142-prehardened-1superZoom
Material Meets These Standard(s): ASTM-A322

Key Features

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1/2" x 1 3/4" Alloy Steel Rectangle Bar 4142-Prehardened Part # 19182

1/2" x 1 3/4" Alloy Steel Rectangle Bar 4142-Prehardened -
Part #: 19182
Select a Cut Size
  • 18″ (18 in.) - $151.58 ea.
  • 36″ (3 ft.) - $253.10 ea.
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
$151.58 for 1
$151.58 ea.
Expand Details

Dimensions

  • Thickness: 0.5"
  • Width: 1.75"
Click for more details alloy-steel-rectangle-bar-4142-prehardened-1superZoom
Material Meets These Standard(s): ASTM-A322

Key Features

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1/2" x 2" Alloy Steel Rectangle Bar 4142-Prehardened Part # 19192

1/2" x 2" Alloy Steel Rectangle Bar 4142-Prehardened -
Part #: 19192
Select a Cut Size
  • 18″ (18 in.) - $154.38 ea.
  • 36″ (3 ft.) - $257.62 ea.
  • 72″ (6 ft.) - $489.17 ea.
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
$154.38 for 1
$154.38 ea.
Expand Details

Dimensions

  • Thickness: 0.5"
  • Width: 2"
Click for more details alloy-steel-rectangle-bar-4142-prehardened-1superZoom
Material Meets These Standard(s): ASTM-A322

Key Features

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1/2" x 2 1/2" Alloy Steel Rectangle Bar 4142-Prehardened Part # 19201

1/2" x 2 1/2" Alloy Steel Rectangle Bar 4142-Prehardened -
Part #: 19201
Select a Cut Size
  • 18″ (18 in.) - $179.25 ea.
  • 36″ (3 ft.) - $299.30 ea.
  • 72″ (6 ft.) - $568.37 ea.
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
$179.25 for 1
$179.25 ea.
Expand Details

Dimensions

  • Thickness: 0.5"
  • Width: 2.5"
Click for more details alloy-steel-rectangle-bar-4142-prehardened-1superZoom
Material Meets These Standard(s): ASTM-A322

Key Features

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1/2" x 3" Alloy Steel Rectangle Bar 4142-Prehardened Part # 19212

1/2" x 3" Alloy Steel Rectangle Bar 4142-Prehardened -
Part #: 19212
Select a Cut Size
  • 18″ (18 in.) - $204.18 ea.
  • 36″ (3 ft.) - $340.87 ea.
  • 72″ (6 ft.) - $647.41 ea.
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
$204.18 for 1
$204.18 ea.
Expand Details

Dimensions

  • Thickness: 0.5"
  • Width: 3"
Click for more details alloy-steel-rectangle-bar-4142-prehardened-1superZoom
Material Meets These Standard(s): ASTM-A322

Key Features

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1/2" x 10" Alloy Steel Rectangle Bar 4142-Prehardened Part # 19262

1/2" x 10" Alloy Steel Rectangle Bar 4142-Prehardened -
Part #: 19262
Select a Cut Size
  • 18″ (18 in.) - $597.03 ea.
  • 36″ (3 ft.) - $996.74 ea.
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
$597.03 for 1
$597.03 ea.
Expand Details

Dimensions

  • Thickness: 0.5"
  • Width: 10"
Click for more details alloy-steel-rectangle-bar-4142-prehardened-1superZoom
Material Meets These Standard(s): ASTM-A322

Key Features

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5/8" x 6" Alloy Steel Rectangle Bar 4142-Prehardened Part # 19249

5/8" x 6" Alloy Steel Rectangle Bar 4142-Prehardened -
Part #: 19249
Select a Cut Size
  • 18″ (18 in.) - $391.58 ea.
  • 36″ (3 ft.) - $653.71 ea.
  • 72″ (6 ft.) - $1,241.56 ea.
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
$391.58 for 1
$391.58 ea.
Expand Details

Dimensions

  • Thickness: 0.625"
  • Width: 6"
Click for more details alloy-steel-rectangle-bar-4142-prehardened-1superZoom
Material Meets These Standard(s): ASTM-A322

Key Features

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5/8" x 3/4" Alloy Steel Rectangle Bar 4142-Prehardened Part # 19146

5/8" x 3/4" Alloy Steel Rectangle Bar 4142-Prehardened -
Part #: 19146
Select a Cut Size
  • 18″ (18 in.) - $119.43 ea.
  • 36″ (3 ft.) - $199.30 ea.
  • 72″ (6 ft.) - $378.49 ea.
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
$119.43 for 1
$119.43 ea.
Expand Details

Dimensions

  • Thickness: 0.625"
  • Width: 0.75"
Click for more details alloy-steel-rectangle-bar-4142-prehardened-1superZoom
Material Meets These Standard(s): ASTM-A322

Key Features

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5/8" x 1 1/4" Alloy Steel Rectangle Bar 4142-Prehardened Part # 19163

5/8" x 1 1/4" Alloy Steel Rectangle Bar 4142-Prehardened -
Part #: 19163
Select a Cut Size
  • 18″ (18 in.) - $140.13 ea.
  • 36″ (3 ft.) - $233.98 ea.
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
$140.13 for 1
$140.13 ea.
Expand Details

Dimensions

  • Thickness: 0.625"
  • Width: 1.25"
Click for more details alloy-steel-rectangle-bar-4142-prehardened-1superZoom
Material Meets These Standard(s): ASTM-A322

Key Features

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5/8" x 1 1/2" Alloy Steel Rectangle Bar 4142-Prehardened Part # 19174

5/8" x 1 1/2" Alloy Steel Rectangle Bar 4142-Prehardened -
Part #: 19174
Select a Cut Size
  • 18″ (18 in.) - $168.10 ea.
  • 36″ (3 ft.) - $280.75 ea.
  • 72″ (6 ft.) - $533.18 ea.
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
$168.10 for 1
$168.10 ea.
Expand Details

Dimensions

  • Thickness: 0.625"
  • Width: 1.5"
Click for more details alloy-steel-rectangle-bar-4142-prehardened-1superZoom
Material Meets These Standard(s): ASTM-A322

Key Features

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5/8" Alloy Steel Square Bar 4142-Prehardened Part # 19359

5/8" Alloy Steel Square Bar 4142-Prehardened -
Part #: 19359
Select a Cut Size
  • 18″ (18 in.) - $101.18 ea.
  • 36″ (3 ft.) - $168.91 ea.
  • 72″ (6 ft.) - $320.87 ea.
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
$101.18 for 1
$101.18 ea.
Expand Details

Dimensions

  • Height: 0.625"
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Material Meets These Standard(s): ASTM-A322

Key Features

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5/8" x 4" Alloy Steel Rectangle Bar 4142-Prehardened Part # 19232

5/8" x 4" Alloy Steel Rectangle Bar 4142-Prehardened -
Part #: 19232
Select a Cut Size
  • 18″ (18 in.) - $295.63 ea.
  • 36″ (3 ft.) - $493.66 ea.
  • 72″ (6 ft.) - $937.53 ea.
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
$295.63 for 1
$295.63 ea.
Expand Details

Dimensions

  • Thickness: 0.625"
  • Width: 4"
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Material Meets These Standard(s): ASTM-A322

Key Features

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5/8" x 1" Alloy Steel Rectangle Bar 4142-Prehardened Part # 19155

5/8" x 1" Alloy Steel Rectangle Bar 4142-Prehardened -
Part #: 19155
Select a Cut Size
  • 18″ (18 in.) - $126.45 ea.
  • 36″ (3 ft.) - $211.08 ea.
  • 72″ (6 ft.) - $400.95 ea.
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
$126.45 for 1
$126.45 ea.
Expand Details

Dimensions

  • Thickness: 0.625"
  • Width: 1"
Click for more details alloy-steel-rectangle-bar-4142-prehardened-1superZoom
Material Meets These Standard(s): ASTM-A322

Key Features

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5/8" x 2" Alloy Steel Rectangle Bar 4142-Prehardened Part # 19193

5/8" x 2" Alloy Steel Rectangle Bar 4142-Prehardened -
Part #: 19193
Select a Cut Size
  • 18″ (18 in.) - $181.35 ea.
  • 36″ (3 ft.) - $302.83 ea.
  • 72″ (6 ft.) - $575.00 ea.
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
$181.35 for 1
$181.35 ea.
Expand Details

Dimensions

  • Thickness: 0.625"
  • Width: 2"
Click for more details alloy-steel-rectangle-bar-4142-prehardened-1superZoom
Material Meets These Standard(s): ASTM-A322

Key Features

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5/8" x 2 1/2" Alloy Steel Rectangle Bar 4142-Prehardened Part # 19202

5/8" x 2 1/2" Alloy Steel Rectangle Bar 4142-Prehardened -
Part #: 19202
Select a Cut Size
  • 18″ (18 in.) - $226.45 ea.
  • 36″ (3 ft.) - $378.02 ea.
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
$226.45 for 1
$226.45 ea.
Expand Details

Dimensions

  • Thickness: 0.625"
  • Width: 2.5"
Click for more details alloy-steel-rectangle-bar-4142-prehardened-1superZoom
Material Meets These Standard(s): ASTM-A322

Key Features

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5/8" x 3" Alloy Steel Rectangle Bar 4142-Prehardened Part # 19213

5/8" x 3" Alloy Steel Rectangle Bar 4142-Prehardened -
Part #: 19213
Select a Cut Size
  • 18″ (18 in.) - $238.50 ea.
  • 36″ (3 ft.) - $398.18 ea.
  • 72″ (6 ft.) - $756.16 ea.
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
$238.50 for 1
$238.50 ea.
Expand Details

Dimensions

  • Thickness: 0.625"
  • Width: 3"
Click for more details alloy-steel-rectangle-bar-4142-prehardened-1superZoom
Material Meets These Standard(s): ASTM-A322

Key Features

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5/8" x 8" Alloy Steel Rectangle Bar 4142-Prehardened Part # 19256

5/8" x 8" Alloy Steel Rectangle Bar 4142-Prehardened -
Part #: 19256
Select a Cut Size
  • 18″ (18 in.) - $612.75 ea.
  • 36″ (3 ft.) - $1,023.02 ea.
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
$612.75 for 1
$612.75 ea.
Expand Details

Dimensions

  • Thickness: 0.625"
  • Width: 8"
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Material Meets These Standard(s): ASTM-A322

Key Features

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3/4" x 6" Alloy Steel Rectangle Bar 4142-Prehardened Part # 19250

3/4" x 6" Alloy Steel Rectangle Bar 4142-Prehardened -
Part #: 19250
Select a Cut Size
  • 18″ (18 in.) - $487.88 ea.
  • 36″ (3 ft.) - $814.61 ea.
  • 72″ (6 ft.) - $1,547.05 ea.
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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$487.88 for 1
$487.88 ea.
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Dimensions

  • Thickness: 0.75"
  • Width: 6"
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Material Meets These Standard(s): ASTM-A322

Key Features

FREE MTR AVAILABLE
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