Determine threads easily with the thread template

Thread templates are simple yet powerful tools that can make your life easier when dealing with threaded parts. You might already have one in your toolbox, even if you don’t realize it. However, the world of threads can be confusing, and there are many myths and misunderstandings surrounding thread templates that people often take for granted.

If you want to use a thread template effectively, it’s important to understand what it can and cannot do—and how to use it properly. That’s exactly why you’re here: to get all the answers about thread templates, from their function to their limitations.

What is a Thread Template?

A thread template is a handy tool used to identify the pitch of a thread. It's typically made of metal and features a series of thread profiles cut into it, allowing you to match them against an existing thread. These templates are usually arranged in a fan-like shape on a handle, making them easy to carry and reducing the risk of losing individual pieces.

The number and type of thread templates on a handle can vary. Some are designed for specific thread types like the metric standard or the Whitworth pipe thread, while others combine multiple thread types, including both metric and imperial. Finding the right one may require some trial and error, but once you find the correct match, it can save you a lot of time.

How to Use a Thread Template Correctly

One of the most common methods for checking thread pitch is the "light gap" technique. Here's how to use it:

1. First, ensure you're using the correct thread template for the type of thread you're checking. Using the wrong one will lead to inaccurate results.
2. Select a template and place it against the thread. It doesn't matter which one you start with, but a quick visual check can help narrow down your options.
3. Press the template firmly against the thread. If the profile doesn’t fit, move on to the next one until you find a good match.
4. Hold the template and thread up to a light source. If you see a gap, the pitch doesn’t match. If there's no gap, you've found the right match!

How Accurate Are Thread Templates?

Although the light gap method may seem basic, it's widely used in professional settings. The accuracy depends on the quality of the template and the lighting conditions, as well as your own judgment. When used correctly, thread templates provide reliable results—especially for external threads.

However, they aren’t ideal for internal threads, where the light gap method can be difficult or impossible to apply. In such cases, other tools are more suitable.

Thread Gauge vs. Thread Template: What's the Difference?

Thread templates are sometimes called thread gauges, but they are not the same thing. A thread gauge is a more precise tool used to check the accuracy of a thread, often in industrial environments. It's screwed onto or into the thread to measure more than just pitch, ensuring it meets strict standards.

Thread templates, on the other hand, are more of a quick reference tool. They don’t offer the same level of precision or legal certainty as thread gauges, which are used in manufacturing to ensure compliance with regulations.

Where Are Thread Templates Used?

Thread templates are best suited for situations where high precision isn’t critical. They’re perfect for DIY projects, repair work, or any scenario where you need to quickly determine a thread’s pitch without expensive equipment.

That said, they aren’t meant for determining the exact dimensions of a thread or verifying its tolerance for legal purposes. For those tasks, you’ll need more advanced measuring tools.

But if you’re trying to replace a screw and can’t remember the exact size, a thread template is a great way to figure it out. Once you’ve identified the thread pitch, you can easily find the right threading tools at the BAER online store. Our team is also here to help with any questions you have about tapping or threading.