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Ground Flat Stock

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Ground Flat Stock

Ground flat stock at OnlineMetals is a precision-ground, rectangular bar made from high-quality tool, alloy, stainless, or carbon steels, engineered to tight tolerances for flatness, dimension, and surface finish. It’s ideal for applications in tool & die, machining, gauges, or precision parts where consistent thickness and smooth surfaces are essential. OnlineMetals offers a range of grades—such as A2, D2, O1, 4140, and various stainless alloys—cut to size to avoid excess material waste. The stock is surface ground on all four faces, eliminating defects and decarburization, and arrives ready for further machining or finishing. With quick processing and inventory across multiple grades and sizes, it provides an efficient, reliable source for professionals and hobbyists needing precision material.

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7/16" x 3" Tool Steel Rectangle Bar O1 Precision Ground Part # 12163

7/16" x 3" Tool Steel Rectangle Bar O1 Precision Ground -
Part #: 12163
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
$203.17 for 1
$203.17 ea.

Dimensions

  • Thickness: 0.4375"
  • Width: 3"
Click for more details
tool-steel-rectangle-bar-o1-1superZoom-mob{product.code}
Material Meets These Standard(s): ASTM-A681 , SAE-J-437

Key Features

MTR FREE MTR Available
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tool-steel-rectangle-bar-o1-1superZoom-desk12163

7/16" x 6" Tool Steel Rectangle Bar O1 Precision Ground Part # 12165

7/16" x 6" Tool Steel Rectangle Bar O1 Precision Ground -
Part #: 12165
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
$362.33 for 1
$362.33 ea.

Dimensions

  • Thickness: 0.4375"
  • Width: 6"
Click for more details
tool-steel-rectangle-bar-o1-1superZoom-mob{product.code}
Material Meets These Standard(s): ASTM-A681 , SAE-J-437

Key Features

MTR FREE MTR Available
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tool-steel-rectangle-bar-o1-1superZoom-desk12165

7/16" x 2 1/2" Tool Steel Rectangle Bar O1 Precision Ground Part # 12162

7/16" x 2 1/2" Tool Steel Rectangle Bar O1 Precision Ground -
Part #: 12162
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
$176.68 for 1
$176.68 ea.

Dimensions

  • Thickness: 0.4375"
  • Width: 2.5"
Click for more details
tool-steel-rectangle-bar-o1-1superZoom-mob{product.code}
Material Meets These Standard(s): ASTM-A681 , SAE-J-437

Key Features

MTR FREE MTR Available
View more product details View more product details
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tool-steel-rectangle-bar-o1-1superZoom-desk12162

7/16" x 4" Tool Steel Rectangle Bar O1 Precision Ground Part # 12164

7/16" x 4" Tool Steel Rectangle Bar O1 Precision Ground -
Part #: 12164
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
$249.77 for 1
$249.77 ea.

Dimensions

  • Thickness: 0.4375"
  • Width: 4"
Click for more details
tool-steel-rectangle-bar-o1-1superZoom-mob{product.code}
Material Meets These Standard(s): ASTM-A681 , SAE-J-437

Key Features

MTR FREE MTR Available
View more product details View more product details
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tool-steel-rectangle-bar-o1-1superZoom-desk12164

7/16" Carbon Steel Square Bar 1018 Precision Ground Part # 12468

7/16" Carbon Steel Square Bar 1018 Precision Ground -
Part #: 12468
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
$65.86 for 1
$65.86 ea.

Dimensions

  • Height: 0.4375"
Click for more details
tool-steel-square-bar-1018-1superZoom-mob{product.code}
Material Meets These Standard(s): ASTM-A681

Key Features

MTR FREE MTR Available
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tool-steel-square-bar-1018-1superZoom-desk12468

7/16" Tool Steel Square Bar O1 Precision Ground Part # 12469

7/16" Tool Steel Square Bar O1 Precision Ground -
Part #: 12469
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
$131.02 for 1
$131.02 ea.

Dimensions

  • Height: 0.4375"
Click for more details
tool-steel-square-bar-o1-1superZoom-mob{product.code}
Material Meets These Standard(s): ASTM-A681 , SAE-J-437

Key Features

MTR FREE MTR Available
View more product details View more product details
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tool-steel-square-bar-o1-1superZoom-desk12469

7/16" x 3/4" Tool Steel Rectangle Bar A2 Ground Oversize Part # 19039

7/16" x 3/4" Tool Steel Rectangle Bar A2 Ground Oversize -
Part #: 19039
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
$95.25 for 1
$95.25 ea.

Dimensions

  • Thickness: 0.4375"
  • Width: 0.75"
Click for more details
tool-steel-rectangle-bar-a2-oversize-1superZoom-mob{product.code}
Material Meets These Standard(s): ASTM-A681 , SAE-J-437

Key Features

MTR FREE MTR Available
View more product details View more product details
View more product details Click for more details
tool-steel-rectangle-bar-a2-oversize-1superZoom-desk19039

7/16" x 1" Tool Steel Rectangle Bar A2 Ground Oversize Part # 19040

7/16" x 1" Tool Steel Rectangle Bar A2 Ground Oversize -
Part #: 19040
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
$111.08 for 1
$111.08 ea.

Dimensions

  • Thickness: 0.4375"
  • Width: 1"
Click for more details
tool-steel-rectangle-bar-a2-oversize-1superZoom-mob{product.code}
Material Meets These Standard(s): ASTM-A681 , SAE-J-437

Key Features

MTR FREE MTR Available
View more product details View more product details
View more product details Click for more details
tool-steel-rectangle-bar-a2-oversize-1superZoom-desk19040

7/16" x 1 1/2" Tool Steel Rectangle Bar A2 Ground Oversize Part # 19041

7/16" x 1 1/2" Tool Steel Rectangle Bar A2 Ground Oversize -
Part #: 19041
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
$143.28 for 1
$143.28 ea.

Dimensions

  • Thickness: 0.4375"
  • Width: 1.5"
Click for more details
tool-steel-rectangle-bar-a2-oversize-1superZoom-mob{product.code}
Material Meets These Standard(s): ASTM-A681 , SAE-J-437

Key Features

MTR FREE MTR Available
View more product details View more product details
View more product details Click for more details
tool-steel-rectangle-bar-a2-oversize-1superZoom-desk19041

7/16" x 2 1/2" Tool Steel Rectangle Bar A2 Ground Oversize Part # 19043

7/16" x 2 1/2" Tool Steel Rectangle Bar A2 Ground Oversize -
Part #: 19043
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
$209.83 for 1
$209.83 ea.

Dimensions

  • Thickness: 0.4375"
  • Width: 2.5"
Click for more details
tool-steel-rectangle-bar-a2-oversize-1superZoom-mob{product.code}
Material Meets These Standard(s): ASTM-A681 , SAE-J-437

Key Features

MTR FREE MTR Available
View more product details View more product details
View more product details Click for more details
tool-steel-rectangle-bar-a2-oversize-1superZoom-desk19043

7/16" x 3" Tool Steel Rectangle Bar A2 Ground Oversize Part # 19044

7/16" x 3" Tool Steel Rectangle Bar A2 Ground Oversize -
Part #: 19044
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
$243.08 for 1
$243.08 ea.

Dimensions

  • Thickness: 0.4375"
  • Width: 3"
Click for more details
tool-steel-rectangle-bar-a2-oversize-1superZoom-mob{product.code}
Material Meets These Standard(s): ASTM-A681 , SAE-J-437

Key Features

MTR FREE MTR Available
View more product details View more product details
View more product details Click for more details
tool-steel-rectangle-bar-a2-oversize-1superZoom-desk19044

7/16" x 2" Tool Steel Rectangle Bar A2 Ground Oversize Part # 19042

7/16" x 2" Tool Steel Rectangle Bar A2 Ground Oversize -
Part #: 19042
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
$175.98 for 1
$175.98 ea.

Dimensions

  • Thickness: 0.4375"
  • Width: 2"
Click for more details
tool-steel-rectangle-bar-a2-oversize-1superZoom-mob{product.code}
Material Meets These Standard(s): ASTM-A681 , SAE-J-437

Key Features

MTR FREE MTR Available
View more product details View more product details
View more product details Click for more details
tool-steel-rectangle-bar-a2-oversize-1superZoom-desk19042

7/16" x 4" Tool Steel Rectangle Bar A2 Ground Oversize Part # 19045

7/16" x 4" Tool Steel Rectangle Bar A2 Ground Oversize -
Part #: 19045
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
$309.50 for 1
$309.50 ea.

Dimensions

  • Thickness: 0.4375"
  • Width: 4"
Click for more details
tool-steel-rectangle-bar-a2-oversize-1superZoom-mob{product.code}
Material Meets These Standard(s): ASTM-A681 , SAE-J-437

Key Features

MTR FREE MTR Available
View more product details View more product details
View more product details Click for more details
tool-steel-rectangle-bar-a2-oversize-1superZoom-desk19045

1/2" x 3/4" Carbon Steel Rectangle Bar 1018 Precision Ground Part # 12166

1/2" x 3/4" Carbon Steel Rectangle Bar 1018 Precision Ground -
Part #: 12166
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
$72.84 for 1
$72.84 ea.

Dimensions

  • Thickness: 0.5"
  • Width: 0.75"
Click for more details
tool-steel-rectangle-bar-1018-1superZoom-mob{product.code}
Material Meets These Standard(s): ASTM-A681

Key Features

MTR FREE MTR Available
View more product details View more product details
View more product details Click for more details
tool-steel-rectangle-bar-1018-1superZoom-desk12166

1/2" x 1" Carbon Steel Rectangle Bar 1018 Precision Ground Part # 12167

1/2" x 1" Carbon Steel Rectangle Bar 1018 Precision Ground -
Part #: 12167
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
$84.21 for 1
$84.21 ea.

Dimensions

  • Thickness: 0.5"
  • Width: 1"
Click for more details
tool-steel-rectangle-bar-1018-1superZoom-mob{product.code}
Material Meets These Standard(s): ASTM-A681

Key Features

MTR FREE MTR Available
View more product details View more product details
View more product details Click for more details
tool-steel-rectangle-bar-1018-1superZoom-desk12167

1/2" x 1 1/4" Carbon Steel Rectangle Bar 1018 Precision Ground Part # 12168

1/2" x 1 1/4" Carbon Steel Rectangle Bar 1018 Precision Ground -
Part #: 12168
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
$93.42 for 1
$93.42 ea.

Dimensions

  • Thickness: 0.5"
  • Width: 1.25"
Click for more details
tool-steel-rectangle-bar-1018-1superZoom-mob{product.code}
Material Meets These Standard(s): ASTM-A681

Key Features

MTR FREE MTR Available
View more product details View more product details
View more product details Click for more details
tool-steel-rectangle-bar-1018-1superZoom-desk12168

1/2" x 1 1/2" Carbon Steel Rectangle Bar 1018 Precision Ground Part # 12169

1/2" x 1 1/2" Carbon Steel Rectangle Bar 1018 Precision Ground -
Part #: 12169
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
$102.73 for 1
$102.73 ea.

Dimensions

  • Thickness: 0.5"
  • Width: 1.5"
Click for more details
tool-steel-rectangle-bar-1018-1superZoom-mob{product.code}
Material Meets These Standard(s): ASTM-A681

Key Features

MTR FREE MTR Available
View more product details View more product details
View more product details Click for more details
tool-steel-rectangle-bar-1018-1superZoom-desk12169

1/2" x 2" Carbon Steel Rectangle Bar 1018 Precision Ground Part # 12170

1/2" x 2" Carbon Steel Rectangle Bar 1018 Precision Ground -
Part #: 12170
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
$118.90 for 1
$118.90 ea.

Dimensions

  • Thickness: 0.5"
  • Width: 2"
Click for more details
tool-steel-rectangle-bar-1018-1superZoom-mob{product.code}
Material Meets These Standard(s): ASTM-A681

Key Features

MTR FREE MTR Available
View more product details View more product details
View more product details Click for more details
tool-steel-rectangle-bar-1018-1superZoom-desk12170

1/2" x 2 1/2" Carbon Steel Rectangle Bar 1018 Precision Ground Part # 12171

1/2" x 2 1/2" Carbon Steel Rectangle Bar 1018 Precision Ground -
Part #: 12171
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
$136.93 for 1
$136.93 ea.

Dimensions

  • Thickness: 0.5"
  • Width: 2.5"
Click for more details
tool-steel-rectangle-bar-1018-1superZoom-mob{product.code}
Material Meets These Standard(s): ASTM-A681

Key Features

MTR FREE MTR Available
View more product details View more product details
View more product details Click for more details
tool-steel-rectangle-bar-1018-1superZoom-desk12171

1/2" x 3" Carbon Steel Rectangle Bar 1018 Precision Ground Part # 12172

1/2" x 3" Carbon Steel Rectangle Bar 1018 Precision Ground -
Part #: 12172
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
$153.20 for 1
$153.20 ea.

Dimensions

  • Thickness: 0.5"
  • Width: 3"
Click for more details
tool-steel-rectangle-bar-1018-1superZoom-mob{product.code}
Material Meets These Standard(s): ASTM-A681

Key Features

MTR FREE MTR Available
View more product details View more product details
View more product details Click for more details
tool-steel-rectangle-bar-1018-1superZoom-desk12172

1/2" x 3 1/2" Carbon Steel Rectangle Bar 1018 Precision Ground Part # 12173

1/2" x 3 1/2" Carbon Steel Rectangle Bar 1018 Precision Ground -
Part #: 12173
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
$174.17 for 1
$174.17 ea.

Dimensions

  • Thickness: 0.5"
  • Width: 3.5"
Click for more details
tool-steel-rectangle-bar-1018-1superZoom-mob{product.code}
Material Meets These Standard(s): ASTM-A681

Key Features

MTR FREE MTR Available
View more product details View more product details
View more product details Click for more details
tool-steel-rectangle-bar-1018-1superZoom-desk12173

1/2" x 4" Carbon Steel Rectangle Bar 1018 Precision Ground Part # 12174

1/2" x 4" Carbon Steel Rectangle Bar 1018 Precision Ground -
Part #: 12174
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
$190.05 for 1
$190.05 ea.

Dimensions

  • Thickness: 0.5"
  • Width: 4"
Click for more details
tool-steel-rectangle-bar-1018-1superZoom-mob{product.code}
Material Meets These Standard(s): ASTM-A681

Key Features

MTR FREE MTR Available
View more product details View more product details
View more product details Click for more details
tool-steel-rectangle-bar-1018-1superZoom-desk12174

1/2" x 5" Carbon Steel Rectangle Bar 1018 Precision Ground Part # 12175

1/2" x 5" Carbon Steel Rectangle Bar 1018 Precision Ground -
Part #: 12175
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
$228.73 for 1
$228.73 ea.

Dimensions

  • Thickness: 0.5"
  • Width: 5"
Click for more details
tool-steel-rectangle-bar-1018-1superZoom-mob{product.code}
Material Meets These Standard(s): ASTM-A681

Key Features

MTR FREE MTR Available
View more product details View more product details
View more product details Click for more details
tool-steel-rectangle-bar-1018-1superZoom-desk12175

1/2" x 6" Carbon Steel Rectangle Bar 1018 Precision Ground Part # 12176

1/2" x 6" Carbon Steel Rectangle Bar 1018 Precision Ground -
Part #: 12176
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
$265.11 for 1
$265.11 ea.

Dimensions

  • Thickness: 0.5"
  • Width: 6"
Click for more details
tool-steel-rectangle-bar-1018-1superZoom-mob{product.code}
Material Meets These Standard(s): ASTM-A681

Key Features

MTR FREE MTR Available
View more product details View more product details
View more product details Click for more details
tool-steel-rectangle-bar-1018-1superZoom-desk12176

1/2" x 7" Carbon Steel Rectangle Bar 1018 Precision Ground Part # 12177

1/2" x 7" Carbon Steel Rectangle Bar 1018 Precision Ground -
Part #: 12177
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
$289.64 for 1
$289.64 ea.

Dimensions

  • Thickness: 0.5"
  • Width: 7"
Click for more details
tool-steel-rectangle-bar-1018-1superZoom-mob{product.code}
Material Meets These Standard(s): ASTM-A681

Key Features

MTR FREE MTR Available
View more product details View more product details
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tool-steel-rectangle-bar-1018-1superZoom-desk12177

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