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Stainless Steel Ball – 440C

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Stainless Steel Ball – 440C

440C stainless steel balls are designed for applications that require very high hardness, strength, and wear resistance. As a martensitic stainless alloy, 440C can be heat treated to achieve the highest hardness of any stainless grade while still offering moderate corrosion resistance. These balls are widely used in precision bearings and demanding mechanical systems where durability and consistent performance are essential. Available in Grade 100 for tight dimensional accuracy and smooth rolling characteristics.


Applications: Precision bearings, valve components, knife blades, surgical instruments, chisels, gage blocks, cutlery, ball bearing races, molds, dies, measuring tools.


Material Properties

Link Icon Stainless Steel 440C Product Guide

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1/16" Stainless Ball 440C Grade 100 Part # mp-00065479

1/16" Stainless Ball 440C Grade 100 -
Part #: mp-00065479
Sold & Shipped by RGP / Craig Balls

Bag of 100

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
$11.25
$11.25 ea.

Dimensions

  • Diameter: 0.0625"
Click for more details
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Key Features

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3/32" Stainless Ball 440C Grade 100 Part # mp-00065379

3/32" Stainless Ball 440C Grade 100 -
Part #: mp-00065379
Sold & Shipped by RGP / Craig Balls

Bag of 100

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
$7.37
$7.37 ea.

Dimensions

  • Diameter: 0.0937"
Click for more details
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Key Features

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1/8" Stainless Ball 440C Grade 100 Part # mp-00065492

1/8" Stainless Ball 440C Grade 100 -
Part #: mp-00065492
Sold & Shipped by RGP / Craig Balls

Bag of 100

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
$12.50
$12.50 ea.

Dimensions

  • Diameter: 0.125"
Click for more details
-mob{product.code}

Key Features

CUSTOM CUT DFARS Compliant MTR MTR NOT AVAILABLE product return Non-returnable
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5/32" Stainless Ball 440C Grade 100 Part # mp-00065484

5/32" Stainless Ball 440C Grade 100 -
Part #: mp-00065484
Sold & Shipped by RGP / Craig Balls

Bag of 100

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
$12.75
$12.75 ea.

Dimensions

  • Diameter: 0.1563"
Click for more details
-mob{product.code}

Key Features

CUSTOM CUT DFARS Compliant MTR MTR NOT AVAILABLE product return Non-returnable
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3/16" Stainless Ball 440C Grade 100 Part # mp-00065381

3/16" Stainless Ball 440C Grade 100 -
Part #: mp-00065381
Sold & Shipped by RGP / Craig Balls

Bag of 100

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
$9.50
$9.50 ea.

Dimensions

  • Diameter: 0.1875"
Click for more details
-mob{product.code}

Key Features

CUSTOM CUT DFARS Compliant MTR MTR NOT AVAILABLE product return Non-returnable
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-deskmp-00065381

7/32" Stainless Ball 440C Grade 100 Part # mp-00065471

7/32" Stainless Ball 440C Grade 100 -
Part #: mp-00065471
Sold & Shipped by RGP / Craig Balls

Bag of 100

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
$18.50
$18.50 ea.

Dimensions

  • Diameter: 0.2187"
Click for more details
-mob{product.code}

Key Features

CUSTOM CUT DFARS Compliant MTR MTR NOT AVAILABLE product return Non-returnable
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-deskmp-00065471

1/4" Stainless Ball 440C Grade 100 Part # mp-00065481

1/4" Stainless Ball 440C Grade 100 -
Part #: mp-00065481
Sold & Shipped by RGP / Craig Balls

Bag of 50

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
$10.00
$10.00 ea.

Dimensions

  • Diameter: 0.25"
Click for more details
-mob{product.code}

Key Features

CUSTOM CUT DFARS Compliant MTR MTR NOT AVAILABLE product return Non-returnable
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View more product details Click for more details
-deskmp-00065481

9/32" Stainless Ball 440C Grade 100 Part # mp-00065491

9/32" Stainless Ball 440C Grade 100 -
Part #: mp-00065491
Sold & Shipped by RGP / Craig Balls

Bag of 50

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
$15.75
$15.75 ea.

Dimensions

  • Diameter: 0.2812"
Click for more details
-mob{product.code}

Key Features

CUSTOM CUT DFARS Compliant MTR MTR NOT AVAILABLE product return Non-returnable
View more product details View more product details
View more product details Click for more details
-deskmp-00065491

5/16" Stainless Ball 440C Grade 100 Part # mp-00065474

5/16" Stainless Ball 440C Grade 100 -
Part #: mp-00065474
Sold & Shipped by RGP / Craig Balls

Bag of 50

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
$18.00
$18.00 ea.

Dimensions

  • Diameter: 0.3125"
Click for more details
-mob{product.code}

Key Features

CUSTOM CUT DFARS Compliant MTR MTR NOT AVAILABLE product return Non-returnable
View more product details View more product details
View more product details Click for more details
-deskmp-00065474

11/32" Stainless Ball 440C Grade 100 Part # mp-00065489

11/32" Stainless Ball 440C Grade 100 -
Part #: mp-00065489
Sold & Shipped by RGP / Craig Balls

Bag of 50

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
$30.00
$30.00 ea.

Dimensions

  • Diameter: 0.3437"
Click for more details
-mob{product.code}

Key Features

CUSTOM CUT DFARS Compliant MTR MTR NOT AVAILABLE product return Non-returnable
View more product details View more product details
View more product details Click for more details
-deskmp-00065489

3/8" Stainless Ball 440C Grade 100 Part # mp-00065472

3/8" Stainless Ball 440C Grade 100 -
Part #: mp-00065472
Sold & Shipped by RGP / Craig Balls

Bag of 50

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
$27.80
$27.80 ea.

Dimensions

  • Diameter: 0.375"
Click for more details
-mob{product.code}

Key Features

CUSTOM CUT DFARS Compliant MTR MTR NOT AVAILABLE product return Non-returnable
View more product details View more product details
View more product details Click for more details
-deskmp-00065472

7/16" Stainless Ball 440C Grade 100 Part # mp-00065476

7/16" Stainless Ball 440C Grade 100 -
Part #: mp-00065476
Sold & Shipped by RGP / Craig Balls

Bag of 25

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
$23.00
$23.00 ea.

Dimensions

  • Diameter: 0.4375"
Click for more details
-mob{product.code}

Key Features

CUSTOM CUT DFARS Compliant MTR MTR NOT AVAILABLE product return Non-returnable
View more product details View more product details
View more product details Click for more details
-deskmp-00065476

1/2" Stainless Ball 440C Grade 100 Part # mp-00065380

1/2" Stainless Ball 440C Grade 100 -
Part #: mp-00065380
Sold & Shipped by RGP / Craig Balls

Bag of 25

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
$28.75
$28.75 ea.

Dimensions

  • Diameter: 0.5"
Click for more details
-mob{product.code}

Key Features

CUSTOM CUT DFARS Compliant MTR MTR NOT AVAILABLE product return Non-returnable
View more product details View more product details
View more product details Click for more details
-deskmp-00065380

9/16" Stainless Ball 440C Grade 100 Part # mp-00065475

9/16" Stainless Ball 440C Grade 100 -
Part #: mp-00065475
Sold & Shipped by RGP / Craig Balls

Bag of 25

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
$48.00
$48.00 ea.

Dimensions

  • Diameter: 0.5625"
Click for more details
-mob{product.code}

Key Features

CUSTOM CUT DFARS Compliant MTR MTR NOT AVAILABLE product return Non-returnable
View more product details View more product details
View more product details Click for more details
-deskmp-00065475

5/8" Stainless Ball 440C Grade 100 Part # mp-00065490

5/8" Stainless Ball 440C Grade 100 -
Part #: mp-00065490
Sold & Shipped by RGP / Craig Balls

Bag of 5

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
$15.50
$15.50 ea.

Dimensions

  • Diameter: 0.625"
Click for more details
-mob{product.code}

Key Features

CUSTOM CUT DFARS Compliant MTR MTR NOT AVAILABLE product return Non-returnable
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View more product details Click for more details
-deskmp-00065490

11/16" Stainless Ball 440C Grade 100 Part # mp-00065485

11/16" Stainless Ball 440C Grade 100 -
Part #: mp-00065485
Sold & Shipped by RGP / Craig Balls

Bag of 10

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
$25.00
$25.00 ea.

Dimensions

  • Diameter: 0.6875"
Click for more details
-mob{product.code}

Key Features

CUSTOM CUT DFARS Compliant MTR MTR NOT AVAILABLE product return Non-returnable
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View more product details Click for more details
-deskmp-00065485

3/4" Stainless Ball 440C Grade 100 Part # mp-00065482

3/4" Stainless Ball 440C Grade 100 -
Part #: mp-00065482
Sold & Shipped by RGP / Craig Balls

Bag of 5

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
$16.80
$16.80 ea.

Dimensions

  • Diameter: 0.75"
Click for more details
-mob{product.code}

Key Features

CUSTOM CUT DFARS Compliant MTR MTR NOT AVAILABLE product return Non-returnable
View more product details View more product details
View more product details Click for more details
-deskmp-00065482

13/16" Stainless Ball 440C Grade 100 Part # mp-00065477

13/16" Stainless Ball 440C Grade 100 -
Part #: mp-00065477
Sold & Shipped by RGP / Craig Balls

Bag of 1

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
$5.90
$5.90 ea.

Dimensions

  • Diameter: 0.8125"
Click for more details
-mob{product.code}

Key Features

CUSTOM CUT DFARS Compliant MTR MTR NOT AVAILABLE product return Non-returnable
View more product details View more product details
View more product details Click for more details
-deskmp-00065477

7/8" Stainless Ball 440C Grade 100 Part # mp-00065487

7/8" Stainless Ball 440C Grade 100 -
Part #: mp-00065487
Sold & Shipped by RGP / Craig Balls

Bag of 1

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
$6.25
$6.25 ea.

Dimensions

  • Diameter: 0.875"
Click for more details
Placeholder for future product image

Key Features

CUSTOM CUT DFARS Compliant MTR MTR NOT AVAILABLE product return Non-returnable
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15/16" Stainless Ball 440C Grade 100 Part # mp-00065488

15/16" Stainless Ball 440C Grade 100 -
Part #: mp-00065488
Sold & Shipped by RGP / Craig Balls

Bag of 1

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
$6.50
$6.50 ea.

Dimensions

  • Diameter: 0.9375"
Click for more details
-mob{product.code}

Key Features

CUSTOM CUT DFARS Compliant MTR MTR NOT AVAILABLE product return Non-returnable
View more product details View more product details
View more product details Click for more details
-deskmp-00065488

1" Stainless Ball 440C Grade 100 Part # mp-00065480

1" Stainless Ball 440C Grade 100 -
Part #: mp-00065480
Sold & Shipped by RGP / Craig Balls

Bag of 1

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
$9.50
$9.50 ea.

Dimensions

  • Diameter: 1"
Click for more details
-mob{product.code}

Key Features

CUSTOM CUT DFARS Compliant MTR MTR NOT AVAILABLE product return Non-returnable
View more product details View more product details
View more product details Click for more details
-deskmp-00065480

1 1/16" Stainless Ball 440C Grade 100 Part # mp-00065483

1 1/16" Stainless Ball 440C Grade 100 -
Part #: mp-00065483
Sold & Shipped by RGP / Craig Balls

Bag of 1

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
$10.75
$10.75 ea.

Dimensions

  • Diameter: 1.0625"
Click for more details
-mob{product.code}

Key Features

CUSTOM CUT DFARS Compliant MTR MTR NOT AVAILABLE product return Non-returnable
View more product details View more product details
View more product details Click for more details
-deskmp-00065483

1 1/4" Stainless Ball 440C Grade 100 Part # mp-00065478

1 1/4" Stainless Ball 440C Grade 100 -
Part #: mp-00065478
Sold & Shipped by RGP / Craig Balls

Bag of 1

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
$23.60
$23.60 ea.

Dimensions

  • Diameter: 1.25"
Click for more details
-mob{product.code}

Key Features

CUSTOM CUT DFARS Compliant MTR MTR NOT AVAILABLE product return Non-returnable
View more product details View more product details
View more product details Click for more details
-deskmp-00065478

1 1/2" Stainless Ball 440C Grade 100 Part # mp-00065486

1 1/2" Stainless Ball 440C Grade 100 -
Part #: mp-00065486
Sold & Shipped by RGP / Craig Balls

Bag of 1

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
$31.60
$31.60 ea.

Dimensions

  • Diameter: 1.5"
Click for more details
-mob{product.code}

Key Features

CUSTOM CUT DFARS Compliant MTR MTR NOT AVAILABLE product return Non-returnable
View more product details View more product details
View more product details Click for more details
-deskmp-00065486

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