It's Mostly Greek To Me - A Brief History of Screw Threads

Water Screw Illustration

When discussing Screw Threads, it may be helpful to understand a little of the history behind them.

Let’s start with helical forms. Records dating to around 250 BC establish that it was Greek mathematician Archimedes who explained the mechanical principle of the screw as a form of wedge. He went on to formulate the mathematical characteristics of a helix. This was a precursor to the invention of the “water screw”, which provided a means to move water for irrigation, and as a method for... 

North American Tool Appoints Metal Working Solutions

SOUTH BELOIT, IL – JANUARY 2, 2019:  It is with great pleasure North American Tool announces Metal Working Solutions has been appointed as the Independent Manufacturer Representative for North American Tool’s line of special taps, thread mills, dies, and gages for the TOLA Region (Texas, Oklahoma, Arkansas, and Louisiana).

Tags: press release

Cutting Tap Chamfers 101

Cutting Tap Chamfers 101

Most cutting taps are available in three chamfers. Taper, plug and bottom are how they are referred to in most of the current literature. Why do we choose one over the other and what are the advantages?

Tags: Bottom Tap, Chamfer, Cutting Taps, Plug Tap, Taper Tap

North American Tool "CON-DU-IT" for you!

Rosie the Riveter

North American Tool “CON-DU-IT” for you when you have a thin wall application.

PG Steel Conduit Taps manufactured to DIN 40430 are commonly used for thin wall applications. Typically a conduit type product is where a hose or cable is passed through the center and there is a concern that a standard tap might break through a thin wall.

How is this accomplished? 

Tags: Conduit Taps, North American Tool, PG Tap

Why Is The Premier Manufacturer Of Special Taps Making "Treadmills"? Taps vs. Thread Mills: Things To Consider When Choosing A Tool

Special Taps

Treadmills? If you Google Thread Mills they will offer to “correct” your search to treadmills. Only in the last two months has Google caught on to the term “thread mills” and begun to return websites offering this tool. Google still features a picture of a treadmill to remind you of your potential spelling error.

Tags: special taps, thread mills, treadmills

North American Tool Announces 2018-2019 Taylor Memorial Scholarship Recipients

North American Tool

Roger and K.Y. Taylor, founders of North American Tool Corporation, had great affection for all the people that worked with them. They were greatly interested in the joys as well as the sorrows in their lives. There was no greater joy than a new life, a baby. Through the many family activities of the company, Roger and K.Y. kept in touch with these young people as they matured.

Tags: North American Tool

Happy Independence Day!

Happy Independence Day

Click below to watch video greeting.

Put A Cork In It!

Special Taps
Overcoming Torqueing and Stalling
Are your special taps creating too much torque, or stalling? Teeth chipping? Common machinist’s wisdom says, “when having difficulty tapping a drilled-hole, make the hole diameter larger”. This assumes that the tap, with less material to remove, will cut easier. It’s common sense at first glance, but other things need to be considered.

Tags: Special Tap, Standard Tap, tap chamfer

Industry Standard - A Moving Target!

Industry Standard - A Moving Target!

The intent of defining a list of tools as “Standard” is to provide uniformity in manufacture, integrity, and use. This “uniformity” allows for ease of service, and provides interchangeability of common parts for the user, and ultimately for the consumer. It is also meant to assure quality of function for which the thread is intended.


In the United States, there are three primary organizations that contribute to those definitions. The descriptions of the entities below are meant to be simple for the purpose of illustration to show basic scope of involvement.

Tags: Industry Standard Tap, Popular Special, Special Tap, Standard Tap

North American Tool Corporation Introduces New Line of Standard Solid Carbide Thread Mills

Solid Carbide Thread Mills

North American Tool Corporation has introduced a new line of standard solid carbide thread mills. These thread mills feature a helical flute design and are manufactured from premium micro-grain carbide for increased life and improved thread quality in a variety of materials.

Tags: solid carbide thread mills, thread mills