Have you heard of thumb screws? There are dozens of different types of screws. Traditional wood screws feature coarse threads and a partially threaded shank that allows them to pull wood together. Sheet metal screws, on the other hand, have a fully threaded shank and a sharp tip to penetrate into metal.
Thumb screws are neither wood nor sheet metal screws; they are an entirely separate category of screws. For a better understanding of thumb screws and how they work, keep reading.
What Are Thumb Screws?
Thumb screws are threaded fasteners that are characterized by a tool-free installation process. They don’t require a screwdriver or wrench. Rather, you can install thumb screws using your thumb.
Thumb screws are commonly used for the following:
- Desktop and laptop cases
- Camera tripods
- Light stands
- Service panels
- Cases and enclosures
- Industrial machines
- Small consumer electronics
How Thumb Screws Work
Thumb screws are characterized by a distinctive head that offers an easy-to-grip surface. As shown in the photo above, the head is knurled. This textured pattern simplifies the process of using thumb screws.
You can use a thumb screw by aligning it over a predrilled hole. Next, grip the knurled head between your thumb and at least one other finger. While applying pressure, turn the thumb screw clockwise so that it enters the hole and follows the interior threads.
Benefits of Thumb Screws
Thumb screws offer several benefits. One of the main benefits is that they don’t require any tools to install. Other types of screws require a screwdriver or wrench. Thumb screws, though, eliminate the need for tools, allowing you to install them using your thumb.
You don’t have to worry about overtightening thumb screws. Overtightening is typically the result of applying too much torque with a tool. Since thumb screws don’t require tools to install, there’s little or no risk of overtightening them.
Thumb screws are easy to remove. You just need to grip the knurled head and turn the thumb screw counterclockwise while pulling it. Other types of screws, in comparison, are more difficult to remove because they require a tool (and more space).
Another benefit of thumb screws is reusability. Other screws often become worn down after use. The threads may strip to the point where a screw is no longer able to grip the material in which it’s installed. Thumb screws don’t suffer from this problem. You can reuse them many times without fear of damaging their threads.