Self-Drilling & Self-Tapping Screws | What’s The Difference

When it comes to screws, there are basically two types that you’re likely to use on a regular basis: self-tapping screws and self-drilling screws. What’s the difference between them? And what’s the best option for different applications?

What is a Self-Tapping Screw?

Self-drilling screws are screws with a drill bit that is installed in the screw head. This bit rotates as the screw is driven into a surface, and helps to create a pilot hole. As the screw gets deeper, the drill bit will break through the surface and start drilling into the underlying substrate. self tapping vs self drilling

Self-tapping screws are similar to self-drilling screws, but they also have a tap attached to the screw head. The tap is used to create a pilot hole before the screw is driven in. Once the screw is in enough, the tap can be removed and the Screw will start to self-tap (tap its own threads into) the substrate.

Types of Self-Tapping Screws

Self-Tapping Screws: What’s The Difference?

There are a few different types of self-tapping screws, but they all have one common goal: to allow you to make holes in your work without having to use a drill.

The most common type of self-tapping screw is the self-drilling screw. This screw has a pointed end that can be inserted into the wood surface and then turned by hand or with a tool to create the desired hole.

The second type of self-tapping screw is the self-tapping screwdriver. This screw has a specially designed head that allows you to easily create holes in wood using just your fingers.

Both types of screws require special care if you want them to work properly. First, make sure that the point on the self-drilling screw is clean and free from debris. Then carefully insert it into the wood and turn it until you feel it start to bite into the surface. Keep turning until the hole is created and then remove the screwdriver.

If you’re using a self-tapping screwdriver, be sure to hold it at an angle so that its point makes contact with the wood surface at all times. If you don’t, you’ll eventually see gaps between the threads on the head and the wood, which will make it impossible for the screw to grip onto the surface.

Different Uses of Self-Tapping Screws

There are many different ways to use self-tapping screws, depending on the application. Self-tapping screws are commonly used in construction and engineering applications, where they are used to secure materials together. They can also be used in medical applications, such as when securing screws into bones.

The main difference between self-drilling and self-tapping screws is that self-drilling screws have a drill bit that Countersinks into the screw head creating a hole for the screwdriver to go into for turning. Self-tapping screws do not have a drill bit and instead use a tapping tool that uses a hammer to create a small hole in the screw head.

Different Types of Sizes

There are a few different types of screws that are available for use in your projects. Each type of screw has its own set of pros and cons, so it’s important to choose the right one for the job at hand.

Phillips screws are the most common type of screw, and they come in a variety of sizes. These screws have a cross-head design, which means that they have two heads that you insert into the work piece. When you tighten the screw, the heads press against each other and create a secure connection. Phillips screws can be used in wood, metal, and plastic projects.

Jointless screws are another popular option. These screws don’t have a head or shaft; instead, they have an exposed shank. You insert the shank into the wood or plastic substrate, then tighten the screw using either a tool or your hand. This type of screw is good for projects where tightness is not as important as durability. Jointless screws can also be used in applications where traditional screws would be difficult or impossible to use, such as glass.

Finally, self-tapping screws are a great option if you need to make quick fixes on your project. These screws have a tapped hole in the head that allows you to insert a drill bit and easily start drilling through the material. Once you’ve drilled through the material, simply turn the screw with your fingers to create a new hole in the substrate. Self-tapping screws can be


Self-drilling and self-tapping screws are two very similar concepts, but there is one big difference between the two: self-drilling screws have a pilot hole that needs to be drilled first before the screw can start drilling into the material. This is done so that you don’t start stripping the threads off of your screw as it starts to drill. Self-tapping screws don’t require a pilot hole; they just need to be tapped into place with a hammer or an appropriate tapping tool. Read More

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