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Tool Steel Rectangle Bar O1

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14-08-2025 - tool steel bar-rectangle o1 - 1000x1000superZoom-main

Tool Steel Rectangle Bar O1

Tool Steel Rectangle/Flat Bar O1 is an oil-hardening, general purpose tool steel that holds its size and shape with excellent accuracy when being heat treated. While not as strong or wear resistant as A-2 or D-2, it experiences significantly less distortion during the heat-treating process. O1 tool steel has deep hardening properties and fine grain structure with unusual toughness. 

 

We carry Ground Oversized O1 & Precision Ground O1 rectangle bar.

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Material Properties

Link Icon Tool Steel O1 Product Guide | Link Icon Tool Steel O1 Rectangle Bar Tolerances

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3/4" x 12" Tool Steel Rectangle Bar O1 Precision Ground Part # 12308

3/4" x 12" Tool Steel Rectangle Bar O1 Precision Ground -
Part #: 12308
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
$1,090.85 for 1
$1,090.85 ea.

Dimensions

  • Thickness: 0.75"
  • Width: 12"
Click for more details
tool-steel-rectangle-bar-o1-1superZoom-mob{product.code}
Material Meets These Standard(s): SAE-J-437 , ASTM-A681

Key Features

MTR FREE MTR Available
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tool-steel-rectangle-bar-o1-1superZoom-desk12308

7/8" x 1" Tool Steel Rectangle Bar O1 Precision Ground Part # 12332

7/8" x 1" Tool Steel Rectangle Bar O1 Precision Ground -
Part #: 12332
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
$171.45 for 1
$171.45 ea.

Dimensions

  • Thickness: 0.875"
  • Width: 1"
Click for more details
tool-steel-rectangle-bar-o1-1superZoom-mob{product.code}
Material Meets These Standard(s): SAE-J-437 , ASTM-A681

Key Features

MTR FREE MTR Available
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tool-steel-rectangle-bar-o1-1superZoom-desk12332

7/8" x 1 1/4" Tool Steel Rectangle Bar O1 Precision Ground Part # 12333

7/8" x 1 1/4" Tool Steel Rectangle Bar O1 Precision Ground -
Part #: 12333
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
$191.75 for 1
$191.75 ea.

Dimensions

  • Thickness: 0.875"
  • Width: 1.25"
Click for more details
tool-steel-rectangle-bar-o1-1superZoom-mob{product.code}
Material Meets These Standard(s): SAE-J-437 , 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-o1-1superZoom-desk12333

7/8" x 1 1/2" Tool Steel Rectangle Bar O1 Precision Ground Part # 12334

7/8" x 1 1/2" Tool Steel Rectangle Bar O1 Precision Ground -
Part #: 12334
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
$213.33 for 1
$213.33 ea.

Dimensions

  • Thickness: 0.875"
  • Width: 1.5"
Click for more details
tool-steel-rectangle-bar-o1-1superZoom-mob{product.code}
Material Meets These Standard(s): SAE-J-437 , 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-o1-1superZoom-desk12334

7/8" x 2" Tool Steel Rectangle Bar O1 Precision Ground Part # 12335

7/8" x 2" Tool Steel Rectangle Bar O1 Precision Ground -
Part #: 12335
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
$256.30 for 1
$256.30 ea.

Dimensions

  • Thickness: 0.875"
  • Width: 2"
Click for more details
tool-steel-rectangle-bar-o1-1superZoom-mob{product.code}
Material Meets These Standard(s): SAE-J-437 , 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-o1-1superZoom-desk12335

7/8" x 3" Tool Steel Rectangle Bar O1 Precision Ground Part # 12336

7/8" x 3" Tool Steel Rectangle Bar O1 Precision Ground -
Part #: 12336
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
$342.67 for 1
$342.67 ea.

Dimensions

  • Thickness: 0.875"
  • Width: 3"
Click for more details
tool-steel-rectangle-bar-o1-1superZoom-mob{product.code}
Material Meets These Standard(s): SAE-J-437 , 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-o1-1superZoom-desk12336

7/8" x 4" Tool Steel Rectangle Bar O1 Precision Ground Part # 12337

7/8" x 4" Tool Steel Rectangle Bar O1 Precision Ground -
Part #: 12337
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
$429.03 for 1
$429.03 ea.

Dimensions

  • Thickness: 0.875"
  • Width: 4"
Click for more details
tool-steel-rectangle-bar-o1-1superZoom-mob{product.code}
Material Meets These Standard(s): SAE-J-437 , 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-o1-1superZoom-desk12337

7/8" x 6" Tool Steel Rectangle Bar O1 Precision Ground Part # 12338

7/8" x 6" Tool Steel Rectangle Bar O1 Precision Ground -
Part #: 12338
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
$603.73 for 1
$603.73 ea.

Dimensions

  • Thickness: 0.875"
  • Width: 6"
Click for more details
tool-steel-rectangle-bar-o1-1superZoom-mob{product.code}
Material Meets These Standard(s): SAE-J-437 , 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-o1-1superZoom-desk12338

1" x 1 1/4" Tool Steel Rectangle Bar O1 Ground Oversize Part # 11603

1" x 1 1/4" Tool Steel Rectangle Bar O1 Ground Oversize -
Part #: 11603
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
$209.60 for 1
$209.60 ea.

Dimensions

  • Thickness: 1"
  • 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-desk11603

1" x 1 1/2" Tool Steel Rectangle Bar O1 Ground Oversize Part # 11604

1" x 1 1/2" Tool Steel Rectangle Bar O1 Ground Oversize -
Part #: 11604
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
$232.73 for 1
$232.73 ea.

Dimensions

  • Thickness: 1"
  • 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-desk11604

1" x 2" Tool Steel Rectangle Bar O1 Ground Oversize Part # 11605

1" x 2" Tool Steel Rectangle Bar O1 Ground Oversize -
Part #: 11605
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
$278.92 for 1
$278.92 ea.

Dimensions

  • Thickness: 1"
  • 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-desk11605

1" x 2 1/2" Tool Steel Rectangle Bar O1 Ground Oversize Part # 11606

1" x 2 1/2" Tool Steel Rectangle Bar O1 Ground Oversize -
Part #: 11606
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
$325.23 for 1
$325.23 ea.

Dimensions

  • Thickness: 1"
  • 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-desk11606

1" x 3" Tool Steel Rectangle Bar O1 Ground Oversize Part # 11607

1" x 3" Tool Steel Rectangle Bar O1 Ground Oversize -
Part #: 11607
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
$371.20 for 1
$371.20 ea.

Dimensions

  • Thickness: 1"
  • 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-desk11607

1" x 4" Tool Steel Rectangle Bar O1 Ground Oversize Part # 11608

1" x 4" Tool Steel Rectangle Bar O1 Ground Oversize -
Part #: 11608
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
$463.53 for 1
$463.53 ea.

Dimensions

  • Thickness: 1"
  • 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-desk11608

1" x 6" Tool Steel Rectangle Bar O1 Ground Oversize Part # 11609

1" x 6" Tool Steel Rectangle Bar O1 Ground Oversize -
Part #: 11609
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
$650.40 for 1
$650.40 ea.

Dimensions

  • Thickness: 1"
  • 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-desk11609

1" x 1 1/4" Tool Steel Rectangle Bar O1 Precision Ground Part # 12362

1" x 1 1/4" Tool Steel Rectangle Bar O1 Precision Ground -
Part #: 12362
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
$205.55 for 1
$205.55 ea.

Dimensions

  • Thickness: 1"
  • 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-desk12362

1" x 1 1/2" Tool Steel Rectangle Bar O1 Precision Ground Part # 12363

1" x 1 1/2" Tool Steel Rectangle Bar O1 Precision Ground -
Part #: 12363
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
$228.25 for 1
$228.25 ea.

Dimensions

  • Thickness: 1"
  • 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-desk12363

1" x 1 3/4" Tool Steel Rectangle Bar O1 Precision Ground Part # 12364

1" x 1 3/4" Tool Steel Rectangle Bar O1 Precision Ground -
Part #: 12364
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
$250.78 for 1
$250.78 ea.

Dimensions

  • Thickness: 1"
  • Width: 1.75"
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-desk12364

1" x 2" Tool Steel Rectangle Bar O1 Precision Ground Part # 12365

1" x 2" Tool Steel Rectangle Bar O1 Precision Ground -
Part #: 12365
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
$273.45 for 1
$273.45 ea.

Dimensions

  • Thickness: 1"
  • 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-desk12365

1" x 2 1/2" Tool Steel Rectangle Bar O1 Precision Ground Part # 12366

1" x 2 1/2" Tool Steel Rectangle Bar O1 Precision Ground -
Part #: 12366
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
$318.78 for 1
$318.78 ea.

Dimensions

  • Thickness: 1"
  • 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
View more product details Click for more details
tool-steel-rectangle-bar-o1-1superZoom-desk12366

1" x 3 1/2" Tool Steel Rectangle Bar O1 Precision Ground Part # 12368

1" x 3 1/2" Tool Steel Rectangle Bar O1 Precision Ground -
Part #: 12368
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
$409.25 for 1
$409.25 ea.

Dimensions

  • Thickness: 1"
  • Width: 3.5"
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-desk12368

1" x 4" Tool Steel Rectangle Bar O1 Precision Ground Part # 12369

1" x 4" Tool Steel Rectangle Bar O1 Precision Ground -
Part #: 12369
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
$454.40 for 1
$454.40 ea.

Dimensions

  • Thickness: 1"
  • 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-desk12369

1" x 3" Tool Steel Rectangle Bar O1 Precision Ground Part # 12367

1" x 3" Tool Steel Rectangle Bar O1 Precision Ground -
Part #: 12367
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
$363.90 for 1
$363.90 ea.

Dimensions

  • Thickness: 1"
  • 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-desk12367

1" x 5" Tool Steel Rectangle Bar O1 Precision Ground Part # 12370

1" x 5" Tool Steel Rectangle Bar O1 Precision Ground -
Part #: 12370
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
$547.10 for 1
$547.10 ea.

Dimensions

  • Thickness: 1"
  • Width: 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-desk12370

1" x 8" Tool Steel Rectangle Bar O1 Precision Ground Part # 12372

1" x 8" Tool Steel Rectangle Bar O1 Precision Ground -
Part #: 12372
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
$929.85 for 1
$929.85 ea.

Dimensions

  • Thickness: 1"
  • Width: 8"
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-desk12372

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