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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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1/8" x 5" Stainless Rectangle Bar 410 Precision Ground Part # 18744

1/8" x 5" Stainless Rectangle Bar 410 Precision Ground -
Part #: 18744
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
$434.63 for 1
$434.63 ea.

Dimensions

  • Thickness: 0.125"
  • Width: 5"
Click for more details
stainless-rectangle-bar-410-1superZoom-mob{product.code}
Material Meets These Standard(s): ASTM-A240

Key Features

MTR FREE MTR Available
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stainless-rectangle-bar-410-1superZoom-desk18744

1/8" x 6" Stainless Rectangle Bar 410 Precision Ground Part # 18756

1/8" x 6" Stainless Rectangle Bar 410 Precision Ground -
Part #: 18756
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
$507.93 for 1
$507.93 ea.

Dimensions

  • Thickness: 0.125"
  • Width: 6"
Click for more details
stainless-rectangle-bar-410-1superZoom-mob{product.code}
Material Meets These Standard(s): ASTM-A240

Key Features

MTR FREE MTR Available
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stainless-rectangle-bar-410-1superZoom-desk18756

1/8" x 8" Stainless Rectangle Bar 410 Precision Ground Part # 18776

1/8" x 8" Stainless Rectangle Bar 410 Precision Ground -
Part #: 18776
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
$647.00 for 1
$647.00 ea.

Dimensions

  • Thickness: 0.125"
  • Width: 8"
Click for more details
stainless-rectangle-bar-410-1superZoom-mob{product.code}
Material Meets These Standard(s): ASTM-A240

Key Features

MTR FREE MTR Available
View more product details View more product details
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stainless-rectangle-bar-410-1superZoom-desk18776

1/8" x 10" Stainless Rectangle Bar 410 Precision Ground Part # 18796

1/8" x 10" Stainless Rectangle Bar 410 Precision Ground -
Part #: 18796
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
$782.06 for 1
$782.06 ea.

Dimensions

  • Thickness: 0.125"
  • Width: 10"
Click for more details
stainless-rectangle-bar-410-1superZoom-mob{product.code}
Material Meets These Standard(s): ASTM-A240

Key Features

MTR FREE MTR Available
View more product details View more product details
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stainless-rectangle-bar-410-1superZoom-desk18796

1/8" x 12" Stainless Rectangle Bar 410 Precision Ground Part # 18808

1/8" x 12" Stainless Rectangle Bar 410 Precision Ground -
Part #: 18808
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
$917.92 for 1
$917.92 ea.

Dimensions

  • Thickness: 0.125"
  • Width: 12"
Click for more details
stainless-rectangle-bar-410-1superZoom-mob{product.code}
Material Meets These Standard(s): ASTM-A240

Key Features

MTR FREE MTR Available
View more product details View more product details
View more product details Click for more details
stainless-rectangle-bar-410-1superZoom-desk18808

1/8" x 3/4" Stainless Rectangle Bar 440C Oversize Ground Stock Part # 18858

1/8" x 3/4" Stainless Rectangle Bar 440C Oversize Ground Stock -
Part #: 18858
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
$215.80 for 1
$215.80 ea.

Dimensions

  • Thickness: 0.125"
  • Width: 0.75"
Click for more details
stainless-rectangle-bar-410-1superZoom-mob{product.code}
Material Meets These Standard(s): ASTM-A276

Key Features

MTR FREE MTR Available
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stainless-rectangle-bar-410-1superZoom-desk18858

9/64" x 1/2" Tool Steel Rectangle Bar O1 Precision Ground Part # 11821

9/64" x 1/2" Tool Steel Rectangle Bar O1 Precision Ground -
Part #: 11821
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
$33.00 for 1
$33.00 ea.

Dimensions

  • Thickness: 0.1406"
  • Width: 0.5"
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
View more product details Click for more details
tool-steel-rectangle-bar-o1-1superZoom-desk11821

9/64" x 3/4" Tool Steel Rectangle Bar O1 Precision Ground Part # 11822

9/64" x 3/4" Tool Steel Rectangle Bar O1 Precision Ground -
Part #: 11822
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
$37.63 for 1
$37.63 ea.

Dimensions

  • Thickness: 0.1406"
  • Width: 0.75"
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
View more product details Click for more details
tool-steel-rectangle-bar-o1-1superZoom-desk11822

9/64" x 1" Tool Steel Rectangle Bar O1 Precision Ground Part # 11823

9/64" x 1" Tool Steel Rectangle Bar O1 Precision Ground -
Part #: 11823
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
$44.63 for 1
$44.63 ea.

Dimensions

  • Thickness: 0.1406"
  • Width: 1"
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
View more product details Click for more details
tool-steel-rectangle-bar-o1-1superZoom-desk11823

9/64" x 1 1/4" Tool Steel Rectangle Bar O1 Precision Ground Part # 11824

9/64" x 1 1/4" Tool Steel Rectangle Bar O1 Precision Ground -
Part #: 11824
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
$53.68 for 1
$53.68 ea.

Dimensions

  • Thickness: 0.1406"
  • Width: 1.25"
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
View more product details Click for more details
tool-steel-rectangle-bar-o1-1superZoom-desk11824

9/64" x 1 1/2" Tool Steel Rectangle Bar O1 Precision Ground Part # 11825

9/64" x 1 1/2" Tool Steel Rectangle Bar O1 Precision Ground -
Part #: 11825
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
$57.85 for 1
$57.85 ea.

Dimensions

  • Thickness: 0.1406"
  • Width: 1.5"
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
View more product details Click for more details
tool-steel-rectangle-bar-o1-1superZoom-desk11825

9/64" x 2" Tool Steel Rectangle Bar O1 Precision Ground Part # 11826

9/64" x 2" Tool Steel Rectangle Bar O1 Precision Ground -
Part #: 11826
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
$71.63 for 1
$71.63 ea.

Dimensions

  • Thickness: 0.1406"
  • Width: 2"
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
View more product details Click for more details
tool-steel-rectangle-bar-o1-1superZoom-desk11826

9/64" x 3" Tool Steel Rectangle Bar O1 Precision Ground Part # 11827

9/64" x 3" Tool Steel Rectangle Bar O1 Precision Ground -
Part #: 11827
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
$99.00 for 1
$99.00 ea.

Dimensions

  • Thickness: 0.1406"
  • 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
View more product details View more product details
View more product details Click for more details
tool-steel-rectangle-bar-o1-1superZoom-desk11827

9/64" x 4" Tool Steel Rectangle Bar O1 Precision Ground Part # 11828

9/64" x 4" Tool Steel Rectangle Bar O1 Precision Ground -
Part #: 11828
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
$127.52 for 1
$127.52 ea.

Dimensions

  • Thickness: 0.1406"
  • 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
View more product details Click for more details
tool-steel-rectangle-bar-o1-1superZoom-desk11828

5/32" Tool Steel Square Bar O1 Precision Ground Part # 12453

5/32" Tool Steel Square Bar O1 Precision Ground -
Part #: 12453
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
$53.93 for 1
$53.93 ea.

Dimensions

  • Height: 0.15625"
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
View more product details Click for more details
tool-steel-square-bar-o1-1superZoom-desk12453

5/32" x 1/2" Carbon Steel Rectangle Bar 1018 Precision Ground Part # 11829

5/32" x 1/2" Carbon Steel Rectangle Bar 1018 Precision Ground -
Part #: 11829
Best shipping value:
Single Heat Lot Required
Why are heat lots important?
Heat lots ensure consistent metal properties, full traceability, and quality control, which are critical for precision and reliability in your projects.

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

QTY

Update
$31.29 for 1
$31.29 ea.

Dimensions

  • Thickness: 0.1563"
  • Width: 0.5"
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-desk11829

5/32" x 3/4" Carbon Steel Rectangle Bar 1018 Precision Ground Part # 11830

5/32" x 3/4" Carbon Steel Rectangle Bar 1018 Precision Ground -
Part #: 11830
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
$35.94 for 1
$35.94 ea.

Dimensions

  • Thickness: 0.1563"
  • 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-desk11830

5/32" x 1" Carbon Steel Rectangle Bar 1018 Precision Ground Part # 11831

5/32" x 1" Carbon Steel Rectangle Bar 1018 Precision Ground -
Part #: 11831
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
$41.97 for 1
$41.97 ea.

Dimensions

  • Thickness: 0.1563"
  • 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-desk11831

5/32" x 1 1/4" Carbon Steel Rectangle Bar 1018 Precision Ground Part # 11832

5/32" x 1 1/4" Carbon Steel Rectangle Bar 1018 Precision Ground -
Part #: 11832
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
$44.05 for 1
$44.05 ea.

Dimensions

  • Thickness: 0.1563"
  • 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-desk11832

5/32" x 2" Carbon Steel Rectangle Bar 1018 Precision Ground Part # 11834

5/32" x 2" Carbon Steel Rectangle Bar 1018 Precision Ground -
Part #: 11834
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
$60.71 for 1
$60.71 ea.

Dimensions

  • Thickness: 0.1563"
  • 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-desk11834

5/32" x 1 1/2" Carbon Steel Rectangle Bar 1018 Precision Ground Part # 11833

5/32" x 1 1/2" Carbon Steel Rectangle Bar 1018 Precision Ground -
Part #: 11833
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
$50.18 for 1
$50.18 ea.

Dimensions

  • Thickness: 0.1563"
  • 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-desk11833

5/32" x 3" Carbon Steel Rectangle Bar 1018 Precision Ground Part # 11836

5/32" x 3" Carbon Steel Rectangle Bar 1018 Precision Ground -
Part #: 11836
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
$80.90 for 1
$80.90 ea.

Dimensions

  • Thickness: 0.1563"
  • 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-desk11836

5/32" x 3 1/2" Carbon Steel Rectangle Bar 1018 Precision Ground Part # 11837

5/32" x 3 1/2" Carbon Steel Rectangle Bar 1018 Precision Ground -
Part #: 11837
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
$92.86 for 1
$92.86 ea.

Dimensions

  • Thickness: 0.1563"
  • 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-desk11837

5/32" x 2 1/2" Carbon Steel Rectangle Bar 1018 Precision Ground Part # 11835

5/32" x 2 1/2" Carbon Steel Rectangle Bar 1018 Precision Ground -
Part #: 11835
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
$72.28 for 1
$72.28 ea.

Dimensions

  • Thickness: 0.1563"
  • 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-desk11835

5/32" x 4" Carbon Steel Rectangle Bar 1018 Precision Ground Part # 11838

5/32" x 4" Carbon Steel Rectangle Bar 1018 Precision Ground -
Part #: 11838
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
$102.90 for 1
$102.90 ea.

Dimensions

  • Thickness: 0.1563"
  • 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-desk11838

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