What is Die Stock?

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  • Written By: Malcolm Tatum
  • Edited By: Bronwyn Harris
  • Last Modified Date: 25 November 2019
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Sometimes referred to as a diestock or a die cast stock, the die stock is a piece of equipment that is very important to the process of creating uniform threads on different types of screws, bolts, and pipes. Essentially, it is a frame that helps to keep the cutting tools in alignment, thus ensuring that the threads are evenly spaced and are cut to the specifications required. Die stocks can accommodate two different types of cutting tools, usually known as round head and hex head dies.

In order to accomplish the task of creating uniform threads on different devices, a die stock provides the framework that makes it possible to position the cutting tools, usually called dies. These individual dies are razor sharp and are capable of cutting into the metal of the screw or pipe facing with relative ease. The use of the die stock makes it possible to apply uniform pressure to the task of creating the threads, thus ensuring that the threads are of the same depth all the way along the surface of the pipe, bolt, or screw. A device known as a die stock handle helps to make sure the amount of pressure applied remains uniform throughout the thread cutting process.


There are several advantages to using a die stock apparatus for this purpose. Chief among these is the ability to create uniform spacing for the threads. Doing so makes it much easier for the screws and bolts to be mass-produced. This helps to ensure the threads will line up properly with a wide range of similar devices.

A die stock is also helpful in keeping the costs of manufacturing different types of threaded goods within reason. For the consumer, this means that it is possible to purchase pipes, bolts, and screws for very low prices, making it much easier to manage small tasks around the house. The cost-efficient manufacturing of the goods also means that the manufacturer can compete with other companies producing similar goods, and still generate a return for their efforts.

Over the years, the use of the die stock has become increasingly sophisticated. While once the alignment of the dies required careful placement by hand, many manufacturers now use computer equipment to adjust the position of the dies in order to create the ideal threads for a given product. Electronic monitoring of the process makes it possible to stop the operation if one of the dies should slip out of position, correct the problem, and then pick up the activity at the same point. This makes it possible to salvage what would otherwise have been a defective lot that could not have been sold.


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Post 4

Animandel - I am more familiar with the tap tools or taps used to make threads for screws. I have heard of die tools or dies, but not often and I'm sure I wrongly use the word taps in place of the word dies all the time.

When a tap tool is used the process is called tapping. That is easy enough to remember. When a die tool is used the process is called threading.

Post 3

Animandel - Unless you work in the industry, not knowing the term "die stock" is no big surprise. Once you know that instruments called die tools are used to make the threads for screws and other items then you shouldn't be so surprised at the use of the term die stock.

The products made from the threading process combine to form the stock. And die tools are used to make the products so the end result is the die stock.

Post 2

When I read the title of the article I didn't know exactly what it was referring to. When I hear "die stock" I do not think of cutting screws. That's an interesting or, I should say, confusing term to me.

Was anyone else confused by the term, or is this a widely known term and I am the only one who doesn't know what die stock is?

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