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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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1/16" x 1/2" Alloy Steel Rectangle Bar 4142-Prehardened Part # 19125

1/16" x 1/2" Alloy Steel Rectangle Bar 4142-Prehardened -
Part #: 19125
Select a Cut Size
  • 18″ (18 in.) - $42.33 ea.
  • 36″ (3 ft.) - $70.82 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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$42.33 for 1
$42.33 ea.
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Dimensions

  • Thickness: 0.0625"
  • 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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1/16" x 4" Alloy Steel Rectangle Bar 4142-Prehardened Part # 19224

1/16" x 4" Alloy Steel Rectangle Bar 4142-Prehardened -
Part #: 19224
Select a Cut Size
  • 18″ (18 in.) - $196.20 ea.
  • 36″ (3 ft.) - $327.70 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

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$196.20 for 1
$196.20 ea.
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Dimensions

  • Thickness: 0.0625"
  • Width: 4"
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Material Meets These Standard(s): ASTM-A322

Key Features

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1/16" x 3/4" Alloy Steel Rectangle Bar 4142-Prehardened Part # 19138

1/16" x 3/4" Alloy Steel Rectangle Bar 4142-Prehardened -
Part #: 19138
Select a Cut Size
  • 18″ (18 in.) - $53.63 ea.
  • 36″ (3 ft.) - $89.47 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
$53.63 for 1
$53.63 ea.
Expand Details

Dimensions

  • Thickness: 0.0625"
  • 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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1/16" x 1" Alloy Steel Rectangle Bar 4142-Prehardened Part # 19147

1/16" x 1" Alloy Steel Rectangle Bar 4142-Prehardened -
Part #: 19147
Select a Cut Size
  • 18″ (18 in.) - $64.63 ea.
  • 36″ (3 ft.) - $107.88 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
$64.63 for 1
$64.63 ea.
Expand Details

Dimensions

  • Thickness: 0.0625"
  • 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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1/16" x 1 1/2" Alloy Steel Rectangle Bar 4142-Prehardened Part # 19166

1/16" x 1 1/2" Alloy Steel Rectangle Bar 4142-Prehardened -
Part #: 19166
Select a Cut Size
  • 18″ (18 in.) - $86.60 ea.
  • 36″ (3 ft.) - $144.60 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
$86.60 for 1
$86.60 ea.
Expand Details

Dimensions

  • Thickness: 0.0625"
  • 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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1/16" x 2" Alloy Steel Rectangle Bar 4142-Prehardened Part # 19185

1/16" x 2" Alloy Steel Rectangle Bar 4142-Prehardened -
Part #: 19185
Select a Cut Size
  • 18″ (18 in.) - $108.55 ea.
  • 36″ (3 ft.) - $181.20 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
$108.55 for 1
$108.55 ea.
Expand Details

Dimensions

  • Thickness: 0.0625"
  • 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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1/16" x 3" Alloy Steel Rectangle Bar 4142-Prehardened Part # 19205

1/16" x 3" Alloy Steel Rectangle Bar 4142-Prehardened -
Part #: 19205
Select a Cut Size
  • 18″ (18 in.) - $152.30 ea.
  • 36″ (3 ft.) - $254.21 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
$152.30 for 1
$152.30 ea.
Expand Details

Dimensions

  • Thickness: 0.0625"
  • 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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3/32" x 1/2" Alloy Steel Rectangle Bar 4142-Prehardened Part # 19126

3/32" x 1/2" Alloy Steel Rectangle Bar 4142-Prehardened -
Part #: 19126
Select a Cut Size
  • 18″ (18 in.) - $48.70 ea.
  • 36″ (3 ft.) - $81.22 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
$48.70 for 1
$48.70 ea.
Expand Details

Dimensions

  • Thickness: 0.09375"
  • 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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3/32" x 4" Alloy Steel Rectangle Bar 4142-Prehardened Part # 19225

3/32" x 4" Alloy Steel Rectangle Bar 4142-Prehardened -
Part #: 19225
Select a Cut Size
  • 18″ (18 in.) - $212.78 ea.
  • 36″ (3 ft.) - $355.37 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
$212.78 for 1
$212.78 ea.
Expand Details

Dimensions

  • Thickness: 0.09375"
  • 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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3/32" x 3/4" Alloy Steel Rectangle Bar 4142-Prehardened Part # 19139

3/32" x 3/4" Alloy Steel Rectangle Bar 4142-Prehardened -
Part #: 19139
Select a Cut Size
  • 18″ (18 in.) - $60.35 ea.
  • 36″ (3 ft.) - $100.75 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

Update
$60.35 for 1
$60.35 ea.
Expand Details

Dimensions

  • Thickness: 0.09375"
  • Width: 0.75"
Click for more details alloy-steel-rectangle-bar-4142-prehardened-1superZoom
Material Meets These Standard(s): ASTM-A322

Key Features

FREE MTR AVAILABLE
View more product details
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3/32" x 1" Alloy Steel Rectangle Bar 4142-Prehardened Part # 19148

3/32" x 1" Alloy Steel Rectangle Bar 4142-Prehardened -
Part #: 19148
Select a Cut Size
  • 18″ (18 in.) - $72.15 ea.
  • 36″ (3 ft.) - $120.46 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
$72.15 for 1
$72.15 ea.
Expand Details

Dimensions

  • Thickness: 0.09375"
  • 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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View more product details
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3/32" x 1 1/2" Alloy Steel Rectangle Bar 4142-Prehardened Part # 19167

3/32" x 1 1/2" Alloy Steel Rectangle Bar 4142-Prehardened -
Part #: 19167
Select a Cut Size
  • 18″ (18 in.) - $95.33 ea.
  • 36″ (3 ft.) - $159.19 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
$95.33 for 1
$95.33 ea.
Expand Details

Dimensions

  • Thickness: 0.09375"
  • Width: 1.5"
Click for more details alloy-steel-rectangle-bar-4142-prehardened-1superZoom
Material Meets These Standard(s): ASTM-A322

Key Features

FREE MTR AVAILABLE
View more product details
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3/32" x 2" Alloy Steel Rectangle Bar 4142-Prehardened Part # 19186

3/32" x 2" Alloy Steel Rectangle Bar 4142-Prehardened -
Part #: 19186
Select a Cut Size
  • 18″ (18 in.) - $118.80 ea.
  • 36″ (3 ft.) - $198.38 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
$118.80 for 1
$118.80 ea.
Expand Details

Dimensions

  • Thickness: 0.09375"
  • Width: 2"
Click for more details alloy-steel-rectangle-bar-4142-prehardened-1superZoom
Material Meets These Standard(s): ASTM-A322

Key Features

FREE MTR AVAILABLE
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3/32" x 3" Alloy Steel Rectangle Bar 4142-Prehardened Part # 19206

3/32" x 3" Alloy Steel Rectangle Bar 4142-Prehardened -
Part #: 19206
Select a Cut Size
  • 18″ (18 in.) - $166.05 ea.
  • 36″ (3 ft.) - $277.13 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
$166.05 for 1
$166.05 ea.
Expand Details

Dimensions

  • Thickness: 0.09375"
  • Width: 3"
Click for more details alloy-steel-rectangle-bar-4142-prehardened-1superZoom
Material Meets These Standard(s): ASTM-A322

Key Features

FREE MTR AVAILABLE
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1/8" x 6" Alloy Steel Rectangle Bar 4142-Prehardened Part # 19243

1/8" x 6" Alloy Steel Rectangle Bar 4142-Prehardened -
Part #: 19243
Select a Cut Size
  • 18″ (18 in.) - $248.55 ea.
  • 36″ (3 ft.) - $414.89 ea.
  • 72″ (6 ft.) - $787.91 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
$248.55 for 1
$248.55 ea.
Expand Details

Dimensions

  • Thickness: 0.125"
  • 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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1/8" x 3/8" Alloy Steel Rectangle Bar 4142-Prehardened Part # 19121

1/8" x 3/8" Alloy Steel Rectangle Bar 4142-Prehardened -
Part #: 19121
Select a Cut Size
  • 18″ (18 in.) - $65.28 ea.
  • 36″ (3 ft.) - $109.01 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
$65.28 for 1
$65.28 ea.
Expand Details

Dimensions

  • Thickness: 0.125"
  • Width: 0.375"
Click for more details alloy-steel-rectangle-bar-4142-prehardened-1superZoom
Material Meets These Standard(s): ASTM-A322

Key Features

FREE MTR AVAILABLE
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1/8" x 1/2" Alloy Steel Rectangle Bar 4142-Prehardened Part # 19127

1/8" x 1/2" Alloy Steel Rectangle Bar 4142-Prehardened -
Part #: 19127
Select a Cut Size
  • 18″ (18 in.) - $44.25 ea.
  • 36″ (3 ft.) - $73.97 ea.
  • 72″ (6 ft.) - $140.44 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
$44.25 for 1
$44.25 ea.
Expand Details

Dimensions

  • Thickness: 0.125"
  • 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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1/8" x 4" Alloy Steel Rectangle Bar 4142-Prehardened Part # 19226

1/8" x 4" Alloy Steel Rectangle Bar 4142-Prehardened -
Part #: 19226
Select a Cut Size
  • 18″ (18 in.) - $165.58 ea.
  • 36″ (3 ft.) - $276.36 ea.
  • 72″ (6 ft.) - $524.94 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
$165.58 for 1
$165.58 ea.
Expand Details

Dimensions

  • Thickness: 0.125"
  • 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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1/8" x 5" Alloy Steel Rectangle Bar 4142-Prehardened Part # 19235

1/8" x 5" Alloy Steel Rectangle Bar 4142-Prehardened -
Part #: 19235
Select a Cut Size
  • 18″ (18 in.) - $211.53 ea.
  • 36″ (3 ft.) - $353.18 ea.
  • 72″ (6 ft.) - $670.78 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
$211.53 for 1
$211.53 ea.
Expand Details

Dimensions

  • Thickness: 0.125"
  • 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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1/8" x 5/8" Alloy Steel Rectangle Bar 4142-Prehardened Part # 19132

1/8" x 5/8" Alloy Steel Rectangle Bar 4142-Prehardened -
Part #: 19132
Select a Cut Size
  • 18″ (18 in.) - $50.63 ea.
  • 36″ (3 ft.) - $84.58 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
$50.63 for 1
$50.63 ea.
Expand Details

Dimensions

  • Thickness: 0.125"
  • 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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1/8" x 3/4" Alloy Steel Rectangle Bar 4142-Prehardened Part # 19140

1/8" x 3/4" Alloy Steel Rectangle Bar 4142-Prehardened -
Part #: 19140
Select a Cut Size
  • 18″ (18 in.) - $53.22 ea.
  • 36″ (3 ft.) - $88.85 ea.
  • 72″ (6 ft.) - $168.73 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
$53.22 for 1
$53.22 ea.
Expand Details

Dimensions

  • Thickness: 0.125"
  • 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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1/8" x 1" Alloy Steel Rectangle Bar 4142-Prehardened Part # 19149

1/8" x 1" Alloy Steel Rectangle Bar 4142-Prehardened -
Part #: 19149
Select a Cut Size
  • 18″ (18 in.) - $63.48 ea.
  • 36″ (3 ft.) - $105.96 ea.
  • 72″ (6 ft.) - $201.28 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
$63.48 for 1
$63.48 ea.
Expand Details

Dimensions

  • Thickness: 0.125"
  • 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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1/8" x 1 1/4" Alloy Steel Rectangle Bar 4142-Prehardened Part # 19157

1/8" x 1 1/4" Alloy Steel Rectangle Bar 4142-Prehardened -
Part #: 19157
Select a Cut Size
  • 18″ (18 in.) - $71.03 ea.
  • 36″ (3 ft.) - $118.56 ea.
  • 72″ (6 ft.) - $225.13 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
$71.03 for 1
$71.03 ea.
Expand Details

Dimensions

  • Thickness: 0.125"
  • 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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1/8" x 1 1/2" Alloy Steel Rectangle Bar 4142-Prehardened Part # 19168

1/8" x 1 1/2" Alloy Steel Rectangle Bar 4142-Prehardened -
Part #: 19168
Select a Cut Size
  • 18″ (18 in.) - $79.97 ea.
  • 36″ (3 ft.) - $133.42 ea.
  • 72″ (6 ft.) - $253.46 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
$79.97 for 1
$79.97 ea.
Expand Details

Dimensions

  • Thickness: 0.125"
  • Width: 1.5"
Click for more details alloy-steel-rectangle-bar-4142-prehardened-1superZoom
Material Meets These Standard(s): ASTM-A322

Key Features

FREE MTR AVAILABLE
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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

FREE MTR AVAILABLE
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