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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.

1/8" x 1" Tool Steel Rectangle Bar A2 Precision Ground Part # 7162

1/8" x 1" Tool Steel Rectangle Bar A2 Precision Ground -
Part #: 7162

Dimensions

  • Thickness: 0.125"
  • Width: 1"
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Material Meets These Standard(s): ASTM-A681,SAE-J-437

5/64" x 2" Tool Steel Rectangle Bar A2 Precision Ground Part # 19067

5/64" x 2" Tool Steel Rectangle Bar A2 Precision Ground -
Part #: 19067

Dimensions

  • Thickness: 0.0781"
  • Width: 2"
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Material Meets These Standard(s): ASTM-A681,SAE-J-437

5/8" x 3/4" Tool Steel Rectangle Bar A2 Ground Oversize Part # 11502

5/8" x 3/4" Tool Steel Rectangle Bar A2 Ground Oversize -
Part #: 11502

Dimensions

  • Thickness: 0.625"
  • Width: 0.75"
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Material Meets These Standard(s): ASTM-A681,SAE-J-437

1/8" x 3/4" Tool Steel Rectangle Bar A2 Ground Oversize Part # 11161

1/8" x 3/4" Tool Steel Rectangle Bar A2 Ground Oversize -
Part #: 11161

Dimensions

  • Thickness: 0.125"
  • Width: 0.75"
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Material Meets These Standard(s): ASTM-A681,SAE-J-437

7/16" x 4" Tool Steel Rectangle Bar A2 Ground Oversize Part # 19045

7/16" x 4" Tool Steel Rectangle Bar A2 Ground Oversize -
Part #: 19045

Dimensions

  • Thickness: 0.4375"
  • Width: 4"
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Material Meets These Standard(s): ASTM-A681,SAE-J-437

3/4" x 6" Stainless Rectangle Bar 420 Oversize Ground Stock Part # 18849

3/4" x 6" Stainless Rectangle Bar 420 Oversize Ground Stock -
Part #: 18849

Dimensions

  • Thickness: 0.75"
  • Width: 6"
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Material Meets These Standard(s): ASTM-A276

1/8" x 8" Carbon Steel Rectangle Bar 1018 Precision Ground Part # 11771

1/8" x 8" Carbon Steel Rectangle Bar 1018 Precision Ground -
Part #: 11771

Dimensions

  • Thickness: 0.125"
  • Width: 8"
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Material Meets These Standard(s): ASTM-A681

5/32" x 4" Tool Steel Rectangle Bar A2 Precision Ground Part # 11854

5/32" x 4" Tool Steel Rectangle Bar A2 Precision Ground -
Part #: 11854

Dimensions

  • Thickness: 0.1563"
  • Width: 4"
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Material Meets These Standard(s): ASTM-A681,SAE-J-437

3/16" x 1/2" Stainless Rectangle Bar 410 Precision Ground Part # 18636

3/16" x 1/2" Stainless Rectangle Bar 410 Precision Ground -
Part #: 18636

Dimensions

  • Thickness: 0.1875"
  • Width: 0.5"
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Material Meets These Standard(s): ASTM-A240

1/2" x 2" Tool Steel Rectangle Bar O1 Precision Ground Part # 12211

1/2" x 2" Tool Steel Rectangle Bar O1 Precision Ground -
Part #: 12211

Dimensions

  • Thickness: 0.5"
  • Width: 2"
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Material Meets These Standard(s): ASTM-A681,SAE-J-437

1/2" x 2 1/2" Tool Steel Rectangle Bar A2 Precision Ground Part # 12189

1/2" x 2 1/2" Tool Steel Rectangle Bar A2 Precision Ground -
Part #: 12189

Dimensions

  • Thickness: 0.5"
  • Width: 2.5"
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Material Meets These Standard(s): ASTM-A681,SAE-J-437

1/2" x 3/4" Carbon Steel Rectangle Bar 1018 Precision Ground Part # 12166

1/2" x 3/4" Carbon Steel Rectangle Bar 1018 Precision Ground -
Part #: 12166

Dimensions

  • Thickness: 0.5"
  • Width: 0.75"
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Material Meets These Standard(s): ASTM-A681

1/4" x 3/4" Carbon Steel Rectangle Bar 1018 Precision Ground Part # 11957

1/4" x 3/4" Carbon Steel Rectangle Bar 1018 Precision Ground -
Part #: 11957

Dimensions

  • Thickness: 0.25"
  • Width: 0.75"
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Material Meets These Standard(s): ASTM-A681

1/8" x 1/2" Stainless Rectangle Bar 440C Oversize Ground Stock Part # 18852

1/8" x 1/2" Stainless Rectangle Bar 440C Oversize Ground Stock -
Part #: 18852

Dimensions

  • Thickness: 0.125"
  • Width: 0.5"
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Material Meets These Standard(s): ASTM-A276

1/2" x 2" Stainless Rectangle Bar 410 Precision Ground Part # 18685

1/2" x 2" Stainless Rectangle Bar 410 Precision Ground -
Part #: 18685

Dimensions

  • Thickness: 0.5"
  • Width: 2"
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Material Meets These Standard(s): ASTM-A240

5/8" Stainless Square Bar 440C Oversize Ground Stock Part # 19346

5/8" Stainless Square Bar 440C Oversize Ground Stock -
Part #: 19346

1" x 5" Carbon Steel Rectangle Bar 1018 Precision Ground Part # 12346

1" x 5" Carbon Steel Rectangle Bar 1018 Precision Ground -
Part #: 12346

Dimensions

  • Thickness: 1"
  • Width: 5"
View more product details Click for more details
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Material Meets These Standard(s): ASTM-A681

3/8" x 1" Stainless Rectangle Bar 440C Oversize Ground Stock Part # 18870

3/8" x 1" Stainless Rectangle Bar 440C Oversize Ground Stock -
Part #: 18870

Dimensions

  • Thickness: 0.375"
  • Width: 1"
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Material Meets These Standard(s): ASTM-A276

1/16" x 1 1/2" Carbon Steel Rectangle Bar 1018 Precision Ground Part # 11646

1/16" x 1 1/2" Carbon Steel Rectangle Bar 1018 Precision Ground -
Part #: 11646

Dimensions

  • Thickness: 0.0625"
  • Width: 1.5"
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Material Meets These Standard(s): ASTM-A681

1 1/4" x 12" Carbon Steel Rectangle Bar 1018 Precision Ground Part # 12394

1 1/4" x 12" Carbon Steel Rectangle Bar 1018 Precision Ground -
Part #: 12394

Dimensions

  • Thickness: 1.25"
  • Width: 12"
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Material Meets These Standard(s): ASTM-A681

3" x 6" Tool Steel Rectangle Bar A2 Precision Ground/Milled Part # 27669

3" x 6" Tool Steel Rectangle Bar A2 Precision Ground/Milled -
Part #: 27669

2" Tool Steel Square Bar A2 Ground Oversize Part # 12450

2" Tool Steel Square Bar A2 Ground Oversize -
Part #: 12450
Material Meets These Standard(s): ASTM-A681,SAE-J-437

1/8" x 1/2" Tool Steel Rectangle Bar A2 Precision Ground Part # 11776

1/8" x 1/2" Tool Steel Rectangle Bar A2 Precision Ground -
Part #: 11776

Dimensions

  • Thickness: 0.125"
  • Width: 0.5"
View more product details Click for more details
tool-steel-rectangle-bar-a2-1superZoom
Material Meets These Standard(s): ASTM-A681,SAE-J-437

1/4" x 3/4" Tool Steel Rectangle Bar A2 Precision Ground Part # 11975

1/4" x 3/4" Tool Steel Rectangle Bar A2 Precision Ground -
Part #: 11975

Dimensions

  • Thickness: 0.25"
  • Width: 0.75"
View more product details Click for more details
tool-steel-rectangle-bar-a2-1superZoom
Material Meets These Standard(s): ASTM-A681,SAE-J-437

3/8" x 8" Carbon Steel Rectangle Bar 1018 Precision Ground Part # 12106

3/8" x 8" Carbon Steel Rectangle Bar 1018 Precision Ground -
Part #: 12106

Dimensions

  • Thickness: 0.375"
  • Width: 8"
View more product details Click for more details
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Material Meets These Standard(s): ASTM-A681

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