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King Pin Tester®

Test directly on your part in seconds.

1,580 kgf | <1% tolerance | 18+ years of Proven Reliability

Brinell Testing for Large and Fixed Parts

Can’t move the part? The King Pin Tester® delivers portable Brinell hardness testing directly on large or fixed components—no air supply, no setup, no calibration. Simply load a King Pin®, strike once, measure the impression, and get reliable metal hardness results in seconds. Ideal for field hardness testing in hard-to-reach areas—trusted by foundries, forge shops, and oil field QC teams for over 18 years.
Note: A standard shop hammer is required and not included in the kit.

What’s Included in the Kit

✔King Pin Tester Handle
✔Bag of 250 King Pins®
✔Indenter Holder
✔Metal Indenters
✔LED Magnifier
✔Hardness Table
✔Pin Removal Tool
✔Instruction Booklet
SEE WHAT'S INCLUDED
Download Data Sheet
  • Holder and Indenter
  • King Pin B
  • king-pin-case-parts
  • king pin closed front
  • king pin closed back
How It Works

Simple 4-Step Brinell Testing

The King Pin Tester® makes hardness testing fast, portable, and easy to perform anywhere on the part.

1

Load the King Pin®

Insert the King Pin® into the holder.

2

Strike with a Hammer

Apply force to create the indentation.

3

Measure the Indentation

Measure using the included LED magnifier.

4

Look Up the BHN

Read the hardness value using the hardness table.

King Pins®

King Pins® deliver <1% tolerance for reliable hardness results. Supplied in bags of 250, each with a hardness table for fast BHN lookup.

King Pins Product
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✓ Flexible plans ✓ Cancel anytime ✓ No interruptions
“

We use our King portable testers on a daily basis in 100 degree heat and freezing cold temperatures at many different angles, even upside down, and the quality and reliability is unmatched.

Antonio Fernandez, Weatherford International
“

I find it amazing that a device originally designed and patented in 1936 is still the mainstay of hardness testing for most shops. Not many products that are in existence in this day and age like that. True testimony of what a well thought out product it is.

John Rodney, Southwest Heat Treat
“

I really appreciated the tremendous customer service.

Bill Arenburg, CarlisleIT
“

It’s the best Brinell tester on the market.

Ken Atwood, Northland Forge Ltd.
“

KingScope 100 works great.

Tanvir Seehra, Champ Machine and Welding Ltd.
“

What we love about the King Portable Brinell Tester is the indestructibility, durability and it’s very simple to operate.

Roger Boose, Boose Aluminum
King Pins®
are the best shear pins available for Pin Brinell testing.
🇺🇸 Made in USA
✔ Guaranteed Quality

Committed to Your Success

Leading the way in Hardness Testing, a key element in Quality Control, Safety, and Research and Development.

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WE TAKE QUALITY SERIOUSLY!

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