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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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1/8" x 1 3/4" Alloy Steel Rectangle Bar 4142-Prehardened Part # 19177

1/8" x 1 3/4" Alloy Steel Rectangle Bar 4142-Prehardened -
Part #: 19177
Select a Cut Size
  • 18″ (18 in.) - $93.10 ea.
  • 36″ (3 ft.) - $155.33 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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$93.10 for 1
$93.10 ea.
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Dimensions

  • Thickness: 0.125"
  • Width: 1.75"
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Material Meets These Standard(s): ASTM-A322

Key Features

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1/8" x 2 1/2" Alloy Steel Rectangle Bar 4142-Prehardened Part # 19196

1/8" x 2 1/2" Alloy Steel Rectangle Bar 4142-Prehardened -
Part #: 19196
Select a Cut Size
  • 18″ (18 in.) - $118.32 ea.
  • 36″ (3 ft.) - $197.54 ea.
  • 72″ (6 ft.) - $375.15 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
$118.32 for 1
$118.32 ea.
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Dimensions

  • Thickness: 0.125"
  • Width: 2.5"
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Material Meets These Standard(s): ASTM-A322

Key Features

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1/8" x 3" Alloy Steel Rectangle Bar 4142-Prehardened Part # 19207

1/8" x 3" Alloy Steel Rectangle Bar 4142-Prehardened -
Part #: 19207
Select a Cut Size
  • 18″ (18 in.) - $136.10 ea.
  • 36″ (3 ft.) - $227.14 ea.
  • 72″ (6 ft.) - $431.29 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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$136.10 for 1
$136.10 ea.
Expand Details

Dimensions

  • Thickness: 0.125"
  • Width: 3"
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Material Meets These Standard(s): ASTM-A322

Key Features

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1/8" x 3 1/2" Alloy Steel Rectangle Bar 4142-Prehardened Part # 19216

1/8" x 3 1/2" Alloy Steel Rectangle Bar 4142-Prehardened -
Part #: 19216
Select a Cut Size
  • 18″ (18 in.) - $150.78 ea.
  • 36″ (3 ft.) - $251.78 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

Update
$150.78 for 1
$150.78 ea.
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Dimensions

  • Thickness: 0.125"
  • Width: 3.5"
Click for more details alloy-steel-rectangle-bar-4142-prehardened-1superZoom
Material Meets These Standard(s): ASTM-A322

Key Features

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3/16" x 6" Alloy Steel Rectangle Bar 4142-Prehardened Part # 19244

3/16" x 6" Alloy Steel Rectangle Bar 4142-Prehardened -
Part #: 19244
Select a Cut Size
  • 18″ (18 in.) - $259.97 ea.
  • 36″ (3 ft.) - $434.02 ea.
  • 72″ (6 ft.) - $824.22 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
$259.97 for 1
$259.97 ea.
Expand Details

Dimensions

  • Thickness: 0.1875"
  • 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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3/16" x 3/8" Alloy Steel Rectangle Bar 4142-Prehardened Part # 19122

3/16" x 3/8" Alloy Steel Rectangle Bar 4142-Prehardened -
Part #: 19122
Select a Cut Size
  • 18″ (18 in.) - $74.47 ea.
  • 36″ (3 ft.) - $124.34 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
$74.47 for 1
$74.47 ea.
Expand Details

Dimensions

  • Thickness: 0.1875"
  • Width: 0.375"
Click for more details alloy-steel-rectangle-bar-4142-prehardened-1superZoom
Material Meets These Standard(s): ASTM-A322

Key Features

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3/16" x 1/2" Alloy Steel Rectangle Bar 4142-Prehardened Part # 19128

3/16" x 1/2" Alloy Steel Rectangle Bar 4142-Prehardened -
Part #: 19128
Select a Cut Size
  • 18″ (18 in.) - $57.47 ea.
  • 36″ (3 ft.) - $95.93 ea.
  • 72″ (6 ft.) - $182.26 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
$57.47 for 1
$57.47 ea.
Expand Details

Dimensions

  • Thickness: 0.1875"
  • Width: 0.5"
Click for more details alloy-steel-rectangle-bar-4142-prehardened-1superZoom
Material Meets These Standard(s): ASTM-A322

Key Features

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3/16" x 4" Alloy Steel Rectangle Bar 4142-Prehardened Part # 19227

3/16" x 4" Alloy Steel Rectangle Bar 4142-Prehardened -
Part #: 19227
Select a Cut Size
  • 18″ (18 in.) - $182.85 ea.
  • 36″ (3 ft.) - $305.30 ea.
  • 72″ (6 ft.) - $579.70 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
$182.85 for 1
$182.85 ea.
Expand Details

Dimensions

  • Thickness: 0.1875"
  • Width: 4"
Click for more details alloy-steel-rectangle-bar-4142-prehardened-1superZoom
Material Meets These Standard(s): ASTM-A322

Key Features

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3/16" x 1" Alloy Steel Rectangle Bar 4142-Prehardened Part # 19150

3/16" x 1" Alloy Steel Rectangle Bar 4142-Prehardened -
Part #: 19150
Select a Cut Size
  • 36″ (3 ft.) - $119.45 ea.
  • 72″ (6 ft.) - $226.87 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
$119.45 for 1
$119.45 ea.
Expand Details

Dimensions

  • Thickness: 0.1875"
  • 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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3/16" x 3" Alloy Steel Rectangle Bar 4142-Prehardened Part # 19208

3/16" x 3" Alloy Steel Rectangle Bar 4142-Prehardened -
Part #: 19208
Select a Cut Size
  • 18″ (18 in.) - $144.28 ea.
  • 36″ (3 ft.) - $240.89 ea.
  • 72″ (6 ft.) - $457.35 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
$144.28 for 1
$144.28 ea.
Expand Details

Dimensions

  • Thickness: 0.1875"
  • 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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3/16" Alloy Steel Square Bar 4142-Prehardened Part # 19354

3/16" Alloy Steel Square Bar 4142-Prehardened -
Part #: 19354
Select a Cut Size
  • 18″ (18 in.) - $110.33 ea.
  • 36″ (3 ft.) - $184.20 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
$110.33 for 1
$110.33 ea.
Expand Details

Dimensions

  • Height: 0.1875"
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Material Meets These Standard(s): ASTM-A322

Key Features

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3/16" x 5" Alloy Steel Rectangle Bar 4142-Prehardened Part # 19236

3/16" x 5" Alloy Steel Rectangle Bar 4142-Prehardened -
Part #: 19236
Select a Cut Size
  • 18″ (18 in.) - $221.40 ea.
  • 36″ (3 ft.) - $369.60 ea.
  • 72″ (6 ft.) - $702.00 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
$221.40 for 1
$221.40 ea.
Expand Details

Dimensions

  • Thickness: 0.1875"
  • Width: 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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3/16" x 5/8" Alloy Steel Rectangle Bar 4142-Prehardened Part # 19133

3/16" x 5/8" Alloy Steel Rectangle Bar 4142-Prehardened -
Part #: 19133
Select a Cut Size
  • 18″ (18 in.) - $60.85 ea.
  • 36″ (3 ft.) - $101.57 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
$60.85 for 1
$60.85 ea.
Expand Details

Dimensions

  • Thickness: 0.1875"
  • 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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3/16" x 3/4" Alloy Steel Rectangle Bar 4142-Prehardened Part # 19141

3/16" x 3/4" Alloy Steel Rectangle Bar 4142-Prehardened -
Part #: 19141
Select a Cut Size
  • 18″ (18 in.) - $59.43 ea.
  • 36″ (3 ft.) - $99.24 ea.
  • 72″ (6 ft.) - $188.56 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
$59.43 for 1
$59.43 ea.
Expand Details

Dimensions

  • Thickness: 0.1875"
  • 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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3/16" x 1 1/4" Alloy Steel Rectangle Bar 4142-Prehardened Part # 19158

3/16" x 1 1/4" Alloy Steel Rectangle Bar 4142-Prehardened -
Part #: 19158
Select a Cut Size
  • 18″ (18 in.) - $75.93 ea.
  • 36″ (3 ft.) - $126.79 ea.
  • 72″ (6 ft.) - $240.84 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
$75.93 for 1
$75.93 ea.
Expand Details

Dimensions

  • Thickness: 0.1875"
  • 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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3/16" x 1 1/2" Alloy Steel Rectangle Bar 4142-Prehardened Part # 19169

3/16" x 1 1/2" Alloy Steel Rectangle Bar 4142-Prehardened -
Part #: 19169
Select a Cut Size
  • 18″ (18 in.) - $85.95 ea.
  • 36″ (3 ft.) - $143.52 ea.
  • 72″ (6 ft.) - $272.47 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
$85.95 for 1
$85.95 ea.
Expand Details

Dimensions

  • Thickness: 0.1875"
  • 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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3/16" x 1 3/4" Alloy Steel Rectangle Bar 4142-Prehardened Part # 19178

3/16" x 1 3/4" Alloy Steel Rectangle Bar 4142-Prehardened -
Part #: 19178
Select a Cut Size
  • 18″ (18 in.) - $100.10 ea.
  • 36″ (3 ft.) - $167.16 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
$100.10 for 1
$100.10 ea.
Expand Details

Dimensions

  • Thickness: 0.1875"
  • 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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3/16" x 2" Alloy Steel Rectangle Bar 4142-Prehardened Part # 19188

3/16" x 2" Alloy Steel Rectangle Bar 4142-Prehardened -
Part #: 19188
Select a Cut Size
  • 18″ (18 in.) - $104.68 ea.
  • 36″ (3 ft.) - $174.74 ea.
  • 72″ (6 ft.) - $331.79 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
$104.68 for 1
$104.68 ea.
Expand Details

Dimensions

  • Thickness: 0.1875"
  • 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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3/16" x 2 1/2" Alloy Steel Rectangle Bar 4142-Prehardened Part # 19197

3/16" x 2 1/2" Alloy Steel Rectangle Bar 4142-Prehardened -
Part #: 19197
Select a Cut Size
  • 18″ (18 in.) - $124.43 ea.
  • 36″ (3 ft.) - $207.79 ea.
  • 72″ (6 ft.) - $394.63 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
$124.43 for 1
$124.43 ea.
Expand Details

Dimensions

  • Thickness: 0.1875"
  • 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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3/16" x 3 1/2" Alloy Steel Rectangle Bar 4142-Prehardened Part # 19217

3/16" x 3 1/2" Alloy Steel Rectangle Bar 4142-Prehardened -
Part #: 19217
Select a Cut Size
  • 18″ (18 in.) - $174.27 ea.
  • 36″ (3 ft.) - $290.90 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
$174.27 for 1
$174.27 ea.
Expand Details

Dimensions

  • Thickness: 0.1875"
  • Width: 3.5"
Click for more details alloy-steel-rectangle-bar-4142-prehardened-1superZoom
Material Meets These Standard(s): ASTM-A322

Key Features

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1/4" x 6" Alloy Steel Rectangle Bar 4142-Prehardened Part # 19245

1/4" x 6" Alloy Steel Rectangle Bar 4142-Prehardened -
Part #: 19245
Select a Cut Size
  • 18″ (18 in.) - $268.18 ea.
  • 36″ (3 ft.) - $447.77 ea.
  • 72″ (6 ft.) - $850.35 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
$268.18 for 1
$268.18 ea.
Expand Details

Dimensions

  • Thickness: 0.25"
  • 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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1/4" x 8" Alloy Steel Rectangle Bar 4142-Prehardened Part # 19252

1/4" x 8" Alloy Steel Rectangle Bar 4142-Prehardened -
Part #: 19252
Select a Cut Size
  • 18″ (18 in.) - $405.13 ea.
  • 36″ (3 ft.) - $676.46 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
$405.13 for 1
$405.13 ea.
Expand Details

Dimensions

  • Thickness: 0.25"
  • Width: 8"
Click for more details alloy-steel-rectangle-bar-4142-prehardened-1superZoom
Material Meets These Standard(s): ASTM-A322

Key Features

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1/4" x 3/8" Alloy Steel Rectangle Bar 4142-Prehardened Part # 19123

1/4" x 3/8" Alloy Steel Rectangle Bar 4142-Prehardened -
Part #: 19123
Select a Cut Size
  • 18″ (18 in.) - $62.28 ea.
  • 36″ (3 ft.) - $104.06 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
$62.28 for 1
$62.28 ea.
Expand Details

Dimensions

  • Thickness: 0.25"
  • Width: 0.375"
Click for more details alloy-steel-rectangle-bar-4142-prehardened-1superZoom
Material Meets These Standard(s): ASTM-A322

Key Features

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1/4" x 1/2" Alloy Steel Rectangle Bar 4142-Prehardened Part # 19129

1/4" x 1/2" Alloy Steel Rectangle Bar 4142-Prehardened -
Part #: 19129
Select a Cut Size
  • 18″ (18 in.) - $57.47 ea.
  • 36″ (3 ft.) - $95.90 ea.
  • 72″ (6 ft.) - $182.17 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
$57.47 for 1
$57.47 ea.
Expand Details

Dimensions

  • Thickness: 0.25"
  • Width: 0.5"
Click for more details alloy-steel-rectangle-bar-4142-prehardened-1superZoom
Material Meets These Standard(s): ASTM-A322

Key Features

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1/4" x 4" Alloy Steel Rectangle Bar 4142-Prehardened Part # 19228

1/4" x 4" Alloy Steel Rectangle Bar 4142-Prehardened -
Part #: 19228
Select a Cut Size
  • 18″ (18 in.) - $184.55 ea.
  • 36″ (3 ft.) - $308.06 ea.
  • 72″ (6 ft.) - $585.08 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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$184.55 for 1
$184.55 ea.
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Dimensions

  • Thickness: 0.25"
  • Width: 4"
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Material Meets These Standard(s): ASTM-A322

Key Features

FREE MTR AVAILABLE
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