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Tool Steel Square Bar O1

Tool Steel Square Bar O1

O1 tool steel square bar is an oil hardening, general purpose tool steel prized for its accuracy and low distortion during heat treatment. While it offers less wear resistance than A2 or D2, O1 provides excellent machinability and predictable hardening behavior.


Applications: Punches, gauges, shear knives, tooling components, rolls.


Finish / Condition: Ground Oversized, Precision Ground


Material Properties

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

8 Results

3/16" Tool Steel Square Bar O1 Ground Oversize Part # 12429

3/16" Tool Steel Square Bar O1 Ground Oversize -
Part #: 12429
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
$85.18 for 1
$85.18 ea.
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Dimensions

  • Height: 0.1875"
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Material Meets These Standard(s): ASTM-A681,SAE-J-437

Key Features

MTR FREEMTRAvailable
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1/4" Tool Steel Square Bar O1 Ground Oversize Part # 12431

1/4" Tool Steel Square Bar O1 Ground Oversize -
Part #: 12431
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
$49.97 for 1
$49.97 ea.
Camera Expand Details

Dimensions

  • Height: 0.25"
View more product details Click for more details
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Material Meets These Standard(s): ASTM-A681,SAE-J-437

Key Features

MTR FREEMTRAvailable
View more product details View more product details
View more product details Click for more details
tool-steel-square-bar-o1-oversize-1superZoom

5/16" Tool Steel Square Bar O1 Ground Oversize Part # 12433

5/16" Tool Steel Square Bar O1 Ground Oversize -
Part #: 12433
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
$54.05 for 1
$54.05 ea.
Camera Expand Details

Dimensions

  • Height: 0.3125"
View more product details Click for more details
tool-steel-square-bar-o1-oversize-1superZoom
Material Meets These Standard(s): ASTM-A681,SAE-J-437

Key Features

MTR FREEMTRAvailable
View more product details View more product details
View more product details Click for more details
tool-steel-square-bar-o1-oversize-1superZoom

3/8" Tool Steel Square Bar O1 Ground Oversize Part # 12435

3/8" Tool Steel Square Bar O1 Ground Oversize -
Part #: 12435
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
$68.00 for 1
$68.00 ea.
Camera Expand Details

Dimensions

  • Height: 0.375"
View more product details Click for more details
tool-steel-square-bar-o1-oversize-1superZoom
Material Meets These Standard(s): ASTM-A681,SAE-J-437

Key Features

MTR FREEMTRAvailable
View more product details View more product details
View more product details Click for more details
tool-steel-square-bar-o1-oversize-1superZoom

1/2" Tool Steel Square Bar O1 Ground Oversize Part # 12437

1/2" Tool Steel Square Bar O1 Ground Oversize -
Part #: 12437
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
$77.63 for 1
$77.63 ea.
Camera Expand Details

Dimensions

  • Height: 0.5"
View more product details Click for more details
tool-steel-square-bar-o1-oversize-1superZoom
Material Meets These Standard(s): ASTM-A681,SAE-J-437

Key Features

MTR FREEMTRAvailable
View more product details View more product details
View more product details Click for more details
tool-steel-square-bar-o1-oversize-1superZoom

5/8" Tool Steel Square Bar O1 Ground Oversize Part # 12440

5/8" Tool Steel Square Bar O1 Ground Oversize -
Part #: 12440
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
$101.53 for 1
$101.53 ea.
Camera Expand Details

Dimensions

  • Height: 0.625"
View more product details Click for more details
tool-steel-square-bar-o1-oversize-1superZoom
Material Meets These Standard(s): ASTM-A681,SAE-J-437

Key Features

MTR FREEMTRAvailable
View more product details View more product details
View more product details Click for more details
tool-steel-square-bar-o1-oversize-1superZoom

3/4" Tool Steel Square Bar O1 Ground Oversize Part # 12443

3/4" Tool Steel Square Bar O1 Ground Oversize -
Part #: 12443
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
$130.88 for 1
$130.88 ea.
Camera Expand Details

Dimensions

  • Height: 0.75"
View more product details Click for more details
tool-steel-square-bar-o1-oversize-1superZoom
Material Meets These Standard(s): ASTM-A681,SAE-J-437

Key Features

MTR FREEMTRAvailable
View more product details View more product details
View more product details Click for more details
tool-steel-square-bar-o1-oversize-1superZoom

1" Tool Steel Square Bar O1 Ground Oversize Part # 12448

1" Tool Steel Square Bar O1 Ground Oversize -
Part #: 12448
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
$188.10 for 1
$188.10 ea.
Camera Expand Details

Dimensions

  • Height: 1"
View more product details Click for more details
tool-steel-square-bar-o1-oversize-1superZoom
Material Meets These Standard(s): ASTM-A681,SAE-J-437

Key Features

MTR FREEMTRAvailable
View more product details View more product details
View more product details Click for more details
tool-steel-square-bar-o1-oversize-1superZoom

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