Shop all Products
Prototype without pressure, shop Online Metals protoboxes

Open for Orders 24/7!

Deals
Get a Quick Quote

Ground Flat Stock

Show full description

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.

Sort by

1665 results

Close

More filters

Height

Thickness

Width

Material

Production Method

seller

Alloy/Type

Shape

Can't find what you need?

Contact our experienced US-based customer service team for hard-to-source materials.


5/8" x 1" Tool Steel Rectangle Bar O1 Ground Oversize Part # 11526

5/8" x 1" Tool Steel Rectangle Bar O1 Ground Oversize -
Part #: 11526
Best shipping value:
Single Heat Lot Required
Why are heat lots important?
Heat lots ensure consistent metal properties, full traceability, and quality control, which are critical for precision and reliability in your projects.

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

QTY

Update
$126.50 for 1
$126.50 ea.

Dimensions

  • Thickness: 0.625"
  • Width: 1"
Click for more details
tool-steel-rectangle-bar-o1-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-o1-oversize-1superZoom-desk11526

5/8" x 1 1/4" Tool Steel Rectangle Bar O1 Ground Oversize Part # 11527

5/8" x 1 1/4" Tool Steel Rectangle Bar O1 Ground Oversize -
Part #: 11527
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
$142.65 for 1
$142.65 ea.

Dimensions

  • Thickness: 0.625"
  • Width: 1.25"
Click for more details
tool-steel-rectangle-bar-o1-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-o1-oversize-1superZoom-desk11527

5/8" x 2 1/2" Tool Steel Rectangle Bar O1 Ground Oversize Part # 11530

5/8" x 2 1/2" Tool Steel Rectangle Bar O1 Ground Oversize -
Part #: 11530
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
$225.73 for 1
$225.73 ea.

Dimensions

  • Thickness: 0.625"
  • Width: 2.5"
Click for more details
tool-steel-rectangle-bar-o1-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-o1-oversize-1superZoom-desk11530

5/8" x 1 1/2" Tool Steel Rectangle Bar O1 Ground Oversize Part # 11528

5/8" x 1 1/2" Tool Steel Rectangle Bar O1 Ground Oversize -
Part #: 11528
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
$159.28 for 1
$159.28 ea.

Dimensions

  • Thickness: 0.625"
  • Width: 1.5"
Click for more details
tool-steel-rectangle-bar-o1-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-o1-oversize-1superZoom-desk11528

5/8" x 2" Tool Steel Rectangle Bar O1 Ground Oversize Part # 11529

5/8" x 2" Tool Steel Rectangle Bar O1 Ground Oversize -
Part #: 11529
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
$192.48 for 1
$192.48 ea.

Dimensions

  • Thickness: 0.625"
  • Width: 2"
Click for more details
tool-steel-rectangle-bar-o1-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-o1-oversize-1superZoom-desk11529

5/8" x 3" Tool Steel Rectangle Bar O1 Ground Oversize Part # 11531

5/8" x 3" Tool Steel Rectangle Bar O1 Ground Oversize -
Part #: 11531
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
$258.98 for 1
$258.98 ea.

Dimensions

  • Thickness: 0.625"
  • Width: 3"
Click for more details
tool-steel-rectangle-bar-o1-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-o1-oversize-1superZoom-desk11531

5/8" x 4" Tool Steel Rectangle Bar O1 Ground Oversize Part # 11532

5/8" x 4" Tool Steel Rectangle Bar O1 Ground Oversize -
Part #: 11532
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
$325.42 for 1
$325.42 ea.

Dimensions

  • Thickness: 0.625"
  • Width: 4"
Click for more details
tool-steel-rectangle-bar-o1-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-o1-oversize-1superZoom-desk11532

5/8" x 6" Tool Steel Rectangle Bar O1 Ground Oversize Part # 11533

5/8" x 6" Tool Steel Rectangle Bar O1 Ground Oversize -
Part #: 11533
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
$460.45 for 1
$460.45 ea.

Dimensions

  • Thickness: 0.625"
  • Width: 6"
Click for more details
tool-steel-rectangle-bar-o1-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-o1-oversize-1superZoom-desk11533

5/8" x 3/4" Carbon Steel Rectangle Bar 1018 Precision Ground Part # 12228

5/8" x 3/4" Carbon Steel Rectangle Bar 1018 Precision Ground -
Part #: 12228
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
$82.88 for 1
$82.88 ea.

Dimensions

  • Thickness: 0.625"
  • 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-desk12228

5/8" x 1" Carbon Steel Rectangle Bar 1018 Precision Ground Part # 12229

5/8" x 1" Carbon Steel Rectangle Bar 1018 Precision Ground -
Part #: 12229
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
$95.04 for 1
$95.04 ea.

Dimensions

  • Thickness: 0.625"
  • 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-desk12229

5/8" x 1 1/4" Carbon Steel Rectangle Bar 1018 Precision Ground Part # 12230

5/8" x 1 1/4" Carbon Steel Rectangle Bar 1018 Precision Ground -
Part #: 12230
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
$108.19 for 1
$108.19 ea.

Dimensions

  • Thickness: 0.625"
  • 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-desk12230

5/8" x 2" Carbon Steel Rectangle Bar 1018 Precision Ground Part # 12232

5/8" x 2" Carbon Steel Rectangle Bar 1018 Precision Ground -
Part #: 12232
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
$138.67 for 1
$138.67 ea.

Dimensions

  • Thickness: 0.625"
  • 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-desk12232

5/8" x 2 1/2" Carbon Steel Rectangle Bar 1018 Precision Ground Part # 12233

5/8" x 2 1/2" Carbon Steel Rectangle Bar 1018 Precision Ground -
Part #: 12233
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
$156.56 for 1
$156.56 ea.

Dimensions

  • Thickness: 0.625"
  • 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-desk12233

5/8" x 3" Carbon Steel Rectangle Bar 1018 Precision Ground Part # 12234

5/8" x 3" Carbon Steel Rectangle Bar 1018 Precision Ground -
Part #: 12234
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
$177.60 for 1
$177.60 ea.

Dimensions

  • Thickness: 0.625"
  • 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-desk12234

5/8" x 1 1/2" Carbon Steel Rectangle Bar 1018 Precision Ground Part # 12231

5/8" x 1 1/2" Carbon Steel Rectangle Bar 1018 Precision Ground -
Part #: 12231
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
$117.94 for 1
$117.94 ea.

Dimensions

  • Thickness: 0.625"
  • 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-desk12231

5/8" x 3 1/2" Carbon Steel Rectangle Bar 1018 Precision Ground Part # 12235

5/8" x 3 1/2" Carbon Steel Rectangle Bar 1018 Precision Ground -
Part #: 12235
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
$195.53 for 1
$195.53 ea.

Dimensions

  • Thickness: 0.625"
  • 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-desk12235

5/8" x 5" Carbon Steel Rectangle Bar 1018 Precision Ground Part # 12237

5/8" x 5" Carbon Steel Rectangle Bar 1018 Precision Ground -
Part #: 12237
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
$259.46 for 1
$259.46 ea.

Dimensions

  • Thickness: 0.625"
  • 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-desk12237

5/8" x 4" Carbon Steel Rectangle Bar 1018 Precision Ground Part # 12236

5/8" x 4" Carbon Steel Rectangle Bar 1018 Precision Ground -
Part #: 12236
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
$215.55 for 1
$215.55 ea.

Dimensions

  • Thickness: 0.625"
  • 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-desk12236

5/8" x 6" Carbon Steel Rectangle Bar 1018 Precision Ground Part # 12238

5/8" x 6" Carbon Steel Rectangle Bar 1018 Precision Ground -
Part #: 12238
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
$296.45 for 1
$296.45 ea.

Dimensions

  • Thickness: 0.625"
  • 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-desk12238

5/8" x 8" Carbon Steel Rectangle Bar 1018 Precision Ground Part # 12240

5/8" x 8" Carbon Steel Rectangle Bar 1018 Precision Ground -
Part #: 12240
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
$374.12 for 1
$374.12 ea.

Dimensions

  • Thickness: 0.625"
  • Width: 8"
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-desk12240

5/8" x 9" Carbon Steel Rectangle Bar 1018 Precision Ground Part # 12241

5/8" x 9" Carbon Steel Rectangle Bar 1018 Precision Ground -
Part #: 12241
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
$421.13 for 1
$421.13 ea.

Dimensions

  • Thickness: 0.625"
  • Width: 9"
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-desk12241

5/8" x 7" Carbon Steel Rectangle Bar 1018 Precision Ground Part # 12239

5/8" x 7" Carbon Steel Rectangle Bar 1018 Precision Ground -
Part #: 12239
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
$334.23 for 1
$334.23 ea.

Dimensions

  • Thickness: 0.625"
  • 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
View more product details Click for more details
tool-steel-rectangle-bar-1018-1superZoom-desk12239

5/8" x 10" Carbon Steel Rectangle Bar 1018 Precision Ground Part # 12242

5/8" x 10" Carbon Steel Rectangle Bar 1018 Precision Ground -
Part #: 12242
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
$452.03 for 1
$452.03 ea.

Dimensions

  • Thickness: 0.625"
  • Width: 10"
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-desk12242

5/8" x 12" Carbon Steel Rectangle Bar 1018 Precision Ground Part # 12243

5/8" x 12" Carbon Steel Rectangle Bar 1018 Precision Ground -
Part #: 12243
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
$525.45 for 1
$525.45 ea.

Dimensions

  • Thickness: 0.625"
  • Width: 12"
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-desk12243

5/8" x 3/4" Tool Steel Rectangle Bar A2 Precision Ground Part # 12244

5/8" x 3/4" Tool Steel Rectangle Bar A2 Precision Ground -
Part #: 12244
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
$124.25 for 1
$124.25 ea.

Dimensions

  • Thickness: 0.625"
  • Width: 0.75"
Click for more details
tool-steel-rectangle-bar-a2-1superZoom-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-a2-1superZoom-desk12244

Displaying 1151 - 1175 of 1665 results

Results per page

Can't find what you're looking for?

Contact us for a custom quote