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Square Bar

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Square Bar

We carry metal Square Bar stock in Alloy Steel, Aluminum, Brass, Bronze, Carbon Steel, Cast Iron, Copper, Stainless Steel, and Tool Steel. Most square metal bar stock sizes are available in full lengths and custom cut lengths.

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New Sizes for 303 Sheet/Plate

Onlinemetals is constantly expanding our selection of size, and now feature 303 in sizes 0.4375", 0.5625", 1.125" & 1.75".


0.25" Aluminum Square Bar 6063-T52 Part # 26160

0.25" Aluminum Square Bar 6063-T52 -
Part #: 26160
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
$0.74 for 1
$0.74 ea.

Dimensions

  • Height: 0.25"
  • Temper: T52
Click for more details
aluminum-square-bar-6061-t6511-1superZoom-mob{product.code}

Key Features

CUSTOM CUT MTR FREE MTR AVAILABLE
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aluminum-square-bar-6061-t6511-1superZoom-desk26160

0.1875" Carbon Steel Square Bar 1018 Cold Finish Part # 20658

0.1875" Carbon Steel Square Bar 1018 Cold Finish -
Part #: 20658
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
$1.16 for 1
$1.16 ea.

Dimensions

  • Height: 0.1875"
Click for more details
mild-steel-square-bar-1018-cold-finish-1superZoom-mob{product.code}
Material Meets These Standard(s): ASTM-A108

Key Features

CUSTOM CUT MTR FREE MTR AVAILABLE
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mild-steel-square-bar-1018-cold-finish-1superZoom-desk20658

0.125" Brass Square Bar 360-H02 Extruded Part # 1336

0.125" Brass Square Bar 360-H02 Extruded -
Part #: 1336
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
$1.24 for 1
$1.24 ea.

Dimensions

  • Height: 0.125"
  • Temper: H02
Click for more details
brass-square-bar-360-h02-extruded-1superZoom-mob{product.code}
Material Meets These Standard(s): ASTM-B16

Key Features

MTR FREE MTR AVAILABLE
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brass-square-bar-360-h02-extruded-1superZoom-desk1336

0.25" Aluminum Square Bar 6061-T6511-Extruded Part # 1111

0.25" Aluminum Square Bar 6061-T6511-Extruded -
Part #: 1111
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
$1.32 for 1
$1.32 ea.

Dimensions

  • Height: 0.25"
  • Temper: T6511
Click for more details
aluminum-square-bar-6061-t6511-1superZoom-mob{product.code}
Material Meets These Standard(s): ASTM-B221 , AMS-QQ-A-200/8

Key Features

CUSTOM CUT MTR FREE MTR AVAILABLE
View more product details View more product details
View more product details Click for more details
aluminum-square-bar-6061-t6511-1superZoom-desk1111

0.25" Carbon Steel Square Bar 1018 Cold Finish Part # 7088

0.25" Carbon Steel Square Bar 1018 Cold Finish -
Part #: 7088
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
$1.35 for 1
$1.35 ea.

Dimensions

  • Height: 0.25"
Click for more details
mild-steel-square-bar-1018-cold-finish-1superZoom-mob{product.code}
Material Meets These Standard(s): ASTM-A108

Key Features

CUSTOM CUT MTR FREE MTR AVAILABLE
View more product details View more product details
View more product details Click for more details
mild-steel-square-bar-1018-cold-finish-1superZoom-desk7088

0.375" Carbon Steel Square Bar A36 Hot Rolled Part # 10275

0.375" Carbon Steel Square Bar A36 Hot Rolled -
Part #: 10275
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
$1.42 for 1
$1.42 ea.

Dimensions

  • Height: 0.375"
Click for more details
hot-roll-square-bar-a36-1superZoom-mob{product.code}
Material Meets These Standard(s): ASTM-A36

Key Features

CUSTOM CUT MTR FREE MTR AVAILABLE
View more product details View more product details
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hot-roll-square-bar-a36-1superZoom-desk10275

0.1875" Stainless Square Bar 304/304L-Annealed Cold Finish Part # 426

0.1875" Stainless Square Bar 304/304L-Annealed Cold Finish -
Part #: 426
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
$1.51 for 1
$1.51 ea.

Dimensions

  • Height: 0.1875"
  • Temper: Annealed
Click for more details
stainless-square-bar-304-cold-finish-1superZoom-mob{product.code}
Material Meets These Standard(s): AMS-QQ-S-763 , AMS-5639 , AMS-5647 , ASTM-A276 , ASTM-A479

Key Features

CUSTOM CUT MTR FREE MTR AVAILABLE
View more product details View more product details
View more product details Click for more details
stainless-square-bar-304-cold-finish-1superZoom-desk426

0.375" Aluminum Square Bar 6061-T6511-Extruded Part # 1112

0.375" Aluminum Square Bar 6061-T6511-Extruded -
Part #: 1112
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
$1.59 for 1
$1.59 ea.

Dimensions

  • Height: 0.375"
  • Temper: T6511
Click for more details
aluminum-square-bar-6061-t6511-1superZoom-mob{product.code}
Material Meets These Standard(s): ASTM-B221 , AMS-QQ-A-200/8

Key Features

CUSTOM CUT MTR FREE MTR AVAILABLE
View more product details View more product details
View more product details Click for more details
aluminum-square-bar-6061-t6511-1superZoom-desk1112

0.125" Carbon Steel Square Bar 1018 Cold Finish Part # 7087

0.125" Carbon Steel Square Bar 1018 Cold Finish -
Part #: 7087
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
$1.83 for 1
$1.83 ea.

Dimensions

  • Height: 0.125"
Click for more details
mild-steel-square-bar-1018-cold-finish-1superZoom-mob{product.code}
Material Meets These Standard(s): ASTM-A108

Key Features

CUSTOM CUT MTR FREE MTR AVAILABLE
View more product details View more product details
View more product details Click for more details
mild-steel-square-bar-1018-cold-finish-1superZoom-desk7087

0.1875" Brass Square Bar 360-H02 Extruded Part # 1337

0.1875" Brass Square Bar 360-H02 Extruded -
Part #: 1337
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
$1.91 for 1
$1.91 ea.

Dimensions

  • Height: 0.1875"
  • Temper: H02
Click for more details
brass-square-bar-360-h02-extruded-1superZoom-mob{product.code}
Material Meets These Standard(s): ASTM-B16

Key Features

MTR FREE MTR AVAILABLE
View more product details View more product details
View more product details Click for more details
brass-square-bar-360-h02-extruded-1superZoom-desk1337

0.1875" Stainless Square Bar 303-Annealed Cold Drawn Part # 19634

0.1875" Stainless Square Bar 303-Annealed Cold Drawn -
Part #: 19634
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
$2.10 for 1
$2.10 ea.

Dimensions

  • Height: 0.1875"
  • Temper: Annealed
Click for more details
stainless-square-bar-303-cold-drawn-1superZoom-mob{product.code}
Material Meets These Standard(s): AMS-5640 , ASTM-A582

Key Features

CUSTOM CUT MTR FREE MTR AVAILABLE
View more product details View more product details
View more product details Click for more details
stainless-square-bar-303-cold-drawn-1superZoom-desk19634

0.5" Aluminum Square Bar 6061-T6511-Extruded Part # 1113

0.5" Aluminum Square Bar 6061-T6511-Extruded -
Part #: 1113
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
$2.26 for 1
$2.26 ea.

Dimensions

  • Height: 0.5"
  • Temper: T6511
Click for more details
aluminum-square-bar-6061-t6511-1superZoom-mob{product.code}
Material Meets These Standard(s): ASTM-B221 , AMS-QQ-A-200/8

Key Features

CUSTOM CUT MTR FREE MTR AVAILABLE
View more product details View more product details
View more product details Click for more details
aluminum-square-bar-6061-t6511-1superZoom-desk1113

0.5" Carbon Steel Square Bar A36 Hot Rolled Part # 10277

0.5" Carbon Steel Square Bar A36 Hot Rolled -
Part #: 10277
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
$2.51 for 1
$2.51 ea.

Dimensions

  • Height: 0.5"
Click for more details
hot-roll-square-bar-a36-1superZoom-mob{product.code}
Material Meets These Standard(s): ASTM-A36

Key Features

CUSTOM CUT MTR FREE MTR AVAILABLE
View more product details View more product details
View more product details Click for more details
hot-roll-square-bar-a36-1superZoom-desk10277

0.375" Carbon Steel Square Bar 1018 Cold Finish Part # 7089

0.375" Carbon Steel Square Bar 1018 Cold Finish -
Part #: 7089
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
$2.75 for 1
$2.75 ea.

Dimensions

  • Height: 0.375"
Click for more details
mild-steel-square-bar-1018-cold-finish-1superZoom-mob{product.code}
Material Meets These Standard(s): ASTM-A108

Key Features

CUSTOM CUT MTR FREE MTR AVAILABLE
View more product details View more product details
View more product details Click for more details
mild-steel-square-bar-1018-cold-finish-1superZoom-desk7089

0.25" Brass Square Bar 360-H02 Extruded Part # 1338

0.25" Brass Square Bar 360-H02 Extruded -
Part #: 1338
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
$3.29 for 1
$3.29 ea.

Dimensions

  • Height: 0.25"
  • Temper: H02
Click for more details
brass-square-bar-360-h02-extruded-1superZoom-mob{product.code}
Material Meets These Standard(s): ASTM-B16

Key Features

CUSTOM CUT MTR FREE MTR AVAILABLE
View more product details View more product details
View more product details Click for more details
brass-square-bar-360-h02-extruded-1superZoom-desk1338

0.625" Aluminum Square Bar 6061-T6511-Extruded Part # 1114

0.625" Aluminum Square Bar 6061-T6511-Extruded -
Part #: 1114
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
$3.44 for 1
$3.44 ea.

Dimensions

  • Height: 0.625"
  • Temper: T6511
Click for more details
aluminum-square-bar-6061-t6511-1superZoom-mob{product.code}
Material Meets These Standard(s): ASTM-B221 , AMS-QQ-A-200/8

Key Features

CUSTOM CUT MTR FREE MTR AVAILABLE
View more product details View more product details
View more product details Click for more details
aluminum-square-bar-6061-t6511-1superZoom-desk1114

0.25" Stainless Square Bar 316/316L-Annealed Cold Finish Part # 2208

0.25" Stainless Square Bar 316/316L-Annealed Cold Finish -
Part #: 2208
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
$3.58 for 1
$3.58 ea.

Dimensions

  • Height: 0.25"
  • Temper: Annealed
Click for more details
stainless-square-bar-316-annealed-cold-finish-1superZoom-mob{product.code}
Material Meets These Standard(s): AMS-QQ-S-763 , AMS-5648 , AMS-5653 , ASTM-A276 , ASTM-A479

Key Features

CUSTOM CUT MTR FREE MTR AVAILABLE
View more product details View more product details
View more product details Click for more details
stainless-square-bar-316-annealed-cold-finish-1superZoom-desk2208

0.25" Stainless Square Bar 304/304L-Annealed Cold Finish Part # 427

0.25" Stainless Square Bar 304/304L-Annealed Cold Finish -
Part #: 427
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
$3.72 for 1
$3.72 ea.

Dimensions

  • Height: 0.25"
  • Temper: Annealed
Click for more details
stainless-square-bar-304-cold-finish-1superZoom-mob{product.code}
Material Meets These Standard(s): AMS-QQ-S-763 , AMS-5639 , AMS-5647 , ASTM-A276 , ASTM-A479

Key Features

CUSTOM CUT MTR FREE MTR AVAILABLE
View more product details View more product details
View more product details Click for more details
stainless-square-bar-304-cold-finish-1superZoom-desk427

0.125" Stainless Square Bar 316/316L-Annealed Cold Finish [IN] Part # 2206

0.125" Stainless Square Bar 316/316L-Annealed Cold Finish [IN] -
Part #: 2206
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
$3.76 for 1
$3.76 ea.

Dimensions

  • Height: 0.125"
  • Temper: Annealed
Click for more details
stainless-square-bar-316-annealed-cold-finish-1superZoom-mob{product.code}
Material Meets These Standard(s): AMS-QQ-S-763 , AMS-5648 , AMS-5653 , ASTM-A276 , ASTM-A479

Key Features

CUSTOM CUT MTR FREE MTR AVAILABLE
View more product details View more product details
View more product details Click for more details
stainless-square-bar-316-annealed-cold-finish-1superZoom-desk2206

0.25" Brass Square Bar 385-M30 Extruded Part # 23679

0.25" Brass Square Bar 385-M30 Extruded -
Part #: 23679
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
$4.20 for 1
$4.20 ea.

Dimensions

  • Height: 0.25"
  • Temper: M30
Click for more details
brass-square-bar-385-1superZoom-mob{product.code}
Material Meets These Standard(s): ASTM-B455

Key Features

CUSTOM CUT MTR FREE MTR AVAILABLE
View more product details View more product details
View more product details Click for more details
brass-square-bar-385-1superZoom-desk23679

0.5" Carbon Steel Square Bar 1018 Cold Finish Part # 7175

0.5" Carbon Steel Square Bar 1018 Cold Finish -
Part #: 7175
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
$4.23 for 1
$4.23 ea.

Dimensions

  • Height: 0.5"
Click for more details
mild-steel-square-bar-1018-cold-finish-1superZoom-mob{product.code}
Material Meets These Standard(s): ASTM-A108

Key Features

CUSTOM CUT MTR FREE MTR AVAILABLE
View more product details View more product details
View more product details Click for more details
mild-steel-square-bar-1018-cold-finish-1superZoom-desk7175

0.25" Copper Square Bar 110-H02 Part # 1659

0.25" Copper Square Bar 110-H02 -
Part #: 1659
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
$4.24 for 1
$4.24 ea.

Dimensions

  • Height: 0.25"
  • Temper: H02
Click for more details
copper-square-bar-110-h02-1superZoom-mob{product.code}
Material Meets These Standard(s): ASTM-B187

Key Features

CUSTOM CUT
View more product details View more product details
View more product details Click for more details
copper-square-bar-110-h02-1superZoom-desk1659

0.25" Stainless Square Bar 303-Annealed Cold Drawn Part # 19635

0.25" Stainless Square Bar 303-Annealed Cold Drawn -
Part #: 19635
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
$4.28 for 1
$4.28 ea.

Dimensions

  • Height: 0.25"
  • Temper: Annealed
Click for more details
stainless-square-bar-303-cold-drawn-1superZoom-mob{product.code}
Material Meets These Standard(s): AMS-5640 , ASTM-A582

Key Features

CUSTOM CUT MTR FREE MTR AVAILABLE
View more product details View more product details
View more product details Click for more details
stainless-square-bar-303-cold-drawn-1superZoom-desk19635

0.625" Carbon Steel Square Bar A36 Hot Rolled Part # 10279

0.625" Carbon Steel Square Bar A36 Hot Rolled -
Part #: 10279
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
$4.34 for 1
$4.34 ea.

Dimensions

  • Height: 0.625"
Click for more details
hot-roll-square-bar-a36-1superZoom-mob{product.code}
Material Meets These Standard(s): ASTM-A36

Key Features

CUSTOM CUT MTR FREE MTR AVAILABLE
View more product details View more product details
View more product details Click for more details
hot-roll-square-bar-a36-1superZoom-desk10279

0.75" Aluminum Square Bar 6063-T52 Part # 26161

0.75" Aluminum Square Bar 6063-T52 -
Part #: 26161
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
$5.00 for 1
$5.00 ea.

Dimensions

  • Height: 0.75"
  • Temper: T52
Click for more details
aluminum-square-bar-6061-t6511-1superZoom-mob{product.code}

Key Features

CUSTOM CUT MTR FREE MTR AVAILABLE
View more product details View more product details
View more product details Click for more details
aluminum-square-bar-6061-t6511-1superZoom-desk26161

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