Shop all Products
Widest range of Brass sizes and alloys in stock

Open for Orders 24/7!

Deals
Get a Quick Quote

Tool Steel Rectangle Bar O1

Show full description
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.

Marketplace Icon Precision Store

Material Properties

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

Sort by

424 results

Close

Filter your results

Clear Search

More filters

Production Method

seller

Can't find what you need?

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


1" x 10" Tool Steel Rectangle Bar O1 Precision Ground Part # 12373

1" x 10" Tool Steel Rectangle Bar O1 Precision Ground -
Part #: 12373
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
$1,122.28 for 1
$1,122.28 ea.

Dimensions

  • Thickness: 1"
  • Width: 10"
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-desk12373

1" x 6" Tool Steel Rectangle Bar O1 Precision Ground Part # 12371

1" x 6" Tool Steel Rectangle Bar O1 Precision Ground -
Part #: 12371
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
$637.67 for 1
$637.67 ea.

Dimensions

  • Thickness: 1"
  • 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
View more product details View more product details
View more product details Click for more details
tool-steel-rectangle-bar-o1-1superZoom-desk12371

1" x 12" Tool Steel Rectangle Bar O1 Precision Ground Part # 12374

1" x 12" Tool Steel Rectangle Bar O1 Precision Ground -
Part #: 12374
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
$1,314.55 for 1
$1,314.55 ea.

Dimensions

  • Thickness: 1"
  • Width: 12"
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-desk12374

1 1/8" x 1 1/2" Tool Steel Rectangle Bar O1 Precision Ground Part # 12377

1 1/8" x 1 1/2" Tool Steel Rectangle Bar O1 Precision Ground -
Part #: 12377
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
$233.06 for 1
$233.06 ea.

Dimensions

  • Thickness: 1.125"
  • 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-desk12377

1 1/8" x 2" Tool Steel Rectangle Bar O1 Precision Ground Part # 12378

1 1/8" x 2" Tool Steel Rectangle Bar O1 Precision Ground -
Part #: 12378
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
$277.21 for 1
$277.21 ea.

Dimensions

  • Thickness: 1.125"
  • 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-desk12378

1 1/8" x 4" Tool Steel Rectangle Bar O1 Precision Ground Part # 12380

1 1/8" x 4" Tool Steel Rectangle Bar O1 Precision Ground -
Part #: 12380
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
$453.55 for 1
$453.55 ea.

Dimensions

  • Thickness: 1.125"
  • 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-desk12380

1 1/8" x 6" Tool Steel Rectangle Bar O1 Precision Ground Part # 12381

1 1/8" x 6" Tool Steel Rectangle Bar O1 Precision Ground -
Part #: 12381
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
$526.05 for 1
$526.05 ea.

Dimensions

  • Thickness: 1.125"
  • 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
View more product details View more product details
View more product details Click for more details
tool-steel-rectangle-bar-o1-1superZoom-desk12381

1 1/8" x 3" Tool Steel Rectangle Bar O1 Precision Ground Part # 12379

1 1/8" x 3" Tool Steel Rectangle Bar O1 Precision Ground -
Part #: 12379
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
$365.33 for 1
$365.33 ea.

Dimensions

  • Thickness: 1.125"
  • 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-desk12379

1 1/4" x 1 1/2" Tool Steel Rectangle Bar O1 Precision Ground Part # 12397

1 1/4" x 1 1/2" Tool Steel Rectangle Bar O1 Precision Ground -
Part #: 12397
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
$287.53 for 1
$287.53 ea.

Dimensions

  • Thickness: 1.25"
  • 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-desk12397

1 1/4" x 2" Tool Steel Rectangle Bar O1 Precision Ground Part # 12398

1 1/4" x 2" Tool Steel Rectangle Bar O1 Precision Ground -
Part #: 12398
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
$343.70 for 1
$343.70 ea.

Dimensions

  • Thickness: 1.25"
  • 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-desk12398

1 1/4" x 2 1/2" Tool Steel Rectangle Bar O1 Precision Ground Part # 12399

1 1/4" x 2 1/2" Tool Steel Rectangle Bar O1 Precision Ground -
Part #: 12399
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
$399.63 for 1
$399.63 ea.

Dimensions

  • Thickness: 1.25"
  • 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-desk12399

1 1/4" x 3" Tool Steel Rectangle Bar O1 Precision Ground Part # 12400

1 1/4" x 3" Tool Steel Rectangle Bar O1 Precision Ground -
Part #: 12400
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
$455.40 for 1
$455.40 ea.

Dimensions

  • Thickness: 1.25"
  • 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-desk12400

1 1/4" x 4" Tool Steel Rectangle Bar O1 Precision Ground Part # 12401

1 1/4" x 4" Tool Steel Rectangle Bar O1 Precision Ground -
Part #: 12401
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
$567.28 for 1
$567.28 ea.

Dimensions

  • Thickness: 1.25"
  • 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-desk12401

1 1/4" x 5" Tool Steel Rectangle Bar O1 Precision Ground Part # 12402

1 1/4" x 5" Tool Steel Rectangle Bar O1 Precision Ground -
Part #: 12402
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
$681.47 for 1
$681.47 ea.

Dimensions

  • Thickness: 1.25"
  • 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-desk12402

1 1/4" x 6" Tool Steel Rectangle Bar O1 Precision Ground Part # 12403

1 1/4" x 6" Tool Steel Rectangle Bar O1 Precision Ground -
Part #: 12403
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
$793.35 for 1
$793.35 ea.

Dimensions

  • Thickness: 1.25"
  • 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
View more product details View more product details
View more product details Click for more details
tool-steel-rectangle-bar-o1-1superZoom-desk12403

1 1/2" x 2" Tool Steel Rectangle Bar O1 Precision Ground Part # 12418

1 1/2" x 2" Tool Steel Rectangle Bar O1 Precision Ground -
Part #: 12418
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
$399.68 for 1
$399.68 ea.

Dimensions

  • Thickness: 1.5"
  • 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-desk12418

1 1/2" x 3" Tool Steel Rectangle Bar O1 Precision Ground Part # 12420

1 1/2" x 3" Tool Steel Rectangle Bar O1 Precision Ground -
Part #: 12420
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
$528.10 for 1
$528.10 ea.

Dimensions

  • Thickness: 1.5"
  • 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-desk12420

1 1/2" x 4" Tool Steel Rectangle Bar O1 Precision Ground Part # 12421

1 1/2" x 4" Tool Steel Rectangle Bar O1 Precision Ground -
Part #: 12421
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
$656.50 for 1
$656.50 ea.

Dimensions

  • Thickness: 1.5"
  • 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-desk12421

1 1/2" x 2 1/2" Tool Steel Rectangle Bar O1 Precision Ground Part # 12419

1 1/2" x 2 1/2" Tool Steel Rectangle Bar O1 Precision Ground -
Part #: 12419
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
$463.92 for 1
$463.92 ea.

Dimensions

  • Thickness: 1.5"
  • 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-desk12419

1 1/2" x 6" Tool Steel Rectangle Bar O1 Precision Ground Part # 12423

1 1/2" x 6" Tool Steel Rectangle Bar O1 Precision Ground -
Part #: 12423
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
$926.65 for 1
$926.65 ea.

Dimensions

  • Thickness: 1.5"
  • 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
View more product details View more product details
View more product details Click for more details
tool-steel-rectangle-bar-o1-1superZoom-desk12423

1 1/2" x 8" Tool Steel Rectangle Bar O1 Precision Ground Part # 12424

1 1/2" x 8" Tool Steel Rectangle Bar O1 Precision Ground -
Part #: 12424
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
$1,282.60 for 1
$1,282.60 ea.

Dimensions

  • Thickness: 1.5"
  • 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-desk12424

2" x 3" Tool Steel Rectangle Bar O1 Precision Ground Part # 12425

2" x 3" Tool Steel Rectangle Bar O1 Precision Ground -
Part #: 12425
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
$673.38 for 1
$673.38 ea.

Dimensions

  • Thickness: 2"
  • 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-desk12425

2" x 4" Tool Steel Rectangle Bar O1 Precision Ground Part # 12426

2" x 4" Tool Steel Rectangle Bar O1 Precision Ground -
Part #: 12426
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
$834.98 for 1
$834.98 ea.

Dimensions

  • Thickness: 2"
  • 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-desk12426

2" x 6" Tool Steel Rectangle Bar O1 Precision Ground Part # 12427

2" x 6" Tool Steel Rectangle Bar O1 Precision Ground -
Part #: 12427
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
$1,111.65 for 1
$1,111.65 ea.

Dimensions

  • Thickness: 2"
  • 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-desk12427

Displaying 401 - 424 of 424 results

Results per page

Can't find what you're looking for?

Contact us for a custom quote