History of Self-Drilling Tek Type Screws

The History of Self-Drilling Screws

Tek is to self-drilling screws as Kleenex is to nose tissue –  a brand name. As the first of its kind, “tek” became synonymous with the self-drilling screw design, and now tek screws are essential for a range of applications today.

At All Points Fasteners, we know what professionals look for in self-drilling screws. It’s helpful to learn more about this essential fastener and how our team can help you find the right tek screw for your project.

How Do Self-Drilling Screws Work?

The original self-drilling screw featured threading like a regular screw, but the end had a drill bit shape. This drill bit end eliminated the need to pre-drill a hole before using a screw, saving time and money. After the drill bit punctured the surface, the sharp threads tapped the material to create a strong seal with the screw.

The original design also included a tall head with serrations under the washer to add additional locking abilities. This detail ensured self-drilling screws stayed closely fastened to their materials, making them reliable for many applications.

As this time-saving screw design became more popular, other companies found ways to produce a similar product with low-cost materials and fewer features. Many modern self-drilling screws have eliminated the serrations but maintained the signature drill bit end.

What Are Self-Drilling Screws Used for?

Self-drilling screws are useful for fastening wood and metal. They can attach wood to wood, metal to metal and metal to wood, and they’re ideal for most lightweight and low-density materials. It’s also easy to know how to use a self-drilling screw due to their simple design. Applications for these screws include:


  • HVAC projects
  • Metal roofing
  • Cladding
  • Steel framing

Tek screws are also helpful for many types of metal building and light-gauge metal assemblies, making them common in most general construction environments. With a range of head types, lengths and shank sizes, these screws adapt to your project with ease.


Find Well-Made Self-Drilling Screws at All Points Fasteners

We work with reliable manufacturers to deliver self-drilling screws you can trust. While most other importers put their parts up to bid for manufacturing, we stay with one manufacturer in order to maintain quality control.   Talk to one of our experts today to learn more about our products, or browse our site to find what you need.

Decoding the Meaning Behind the Screw Label Numbers

What Do All the Numbers Mean?

Did you ever read the label and wonder what all the numbers represented? Well, here’s your decoder ring!  We get that there are a lot of screw numbers out there, and it’s important to find the right one for your specific project. At All Points Fasteners, Inc., we’re here to help our customers make informed decisions and understand the best options for their applications. Let us help you find the right solutions for your projects and get you ready to tackle the job with confidence.

What Do Screw Numbers Mean?

Whatever type of project you’re working on or industry you’re a part of, screw numbers can help you get the precise sizing and specifications you need for your tool. The number can tell you a lot about the screw so you can find what you need for your intended use. Some of the information it shows you includes:

  • Length
  • Shank thickness
  • Threads per inch
  • Material thickness the screw’s tip can drive through

Here’s an example:  12-24 X 7/8 Hex Washer Head Self Drilling #3 Drill Bit

12 – Represents the thickness of the shank. Think dress size. The bigger the number, the thicker the shank.

24 – Represents the number TPI, or the number of threads per inch. The higher the number, the finer the threads, which are best used in metal applications. The fewer the threads per inch, the coarser the threads, the faster the screw will drive and are the preferred threading for wood applications or wood studs.

7/8 – measurement from underneath the head to the tip of the screw. In the case of flat headed screws, the length is measured from the top of the screw to the point.

#3 Drill Bit – Drill bit tips range from #2 to #5. They do not represent the size of the hole that they will drill but do represent the thickness of metal they will drive through. But we will save that for another tip!

Finding the Right Screw Label Numbers for Your Applications

So now you know how screw label numbers work — but how do you choose the right one for proper fastening? You can follow some quick guidelines to help you select the best option for your applications. To decide what size screw you need, evaluate the width of the material you’re dealing with and the weight it will need to support. Once you’ve analyzed how the screw will need to work for you, you can decide how big or small a screw you’ll need.

It’s also important to consider the screw length you’ll need based on the depth of the material and what style head will work best.

Work With All Points Fasteners to Get the Right Screws for Your Project

At All Points Fasteners, we offer quality parts and great service for every customer. As a trusted supplier, we provide the products contractors in the construction industry use every day. Whatever your requirements, we can help you find the right options for your application so you can get started sooner. When you work with us, you’ll get access to a wide range of products and trusted customer support to answer any questions and ensure you have what you need for the job.

We give you more than just the products themselves — we’ll chase down order information, find uncommon fasteners and provide expert guidance on using our offerings. If you’re looking for trusted resources and ongoing product support to make finding the right supplies easier, partner with us. Whenever you have questions or need to find the right fasteners for the job, reach out to our team for help. Get started today and request a product quote.

Learn From Our Self-Drilling (Tek® Screw) Primer

Self-Drilling (Tek® Screw) Primer – It’s All About Education

Sharing our knowledge of commercial fasteners such as self-drilling screws, also known as Tek® screws, with contractors is important to us.

Based on years of experience having to match screw requirements with nothing more than descriptive word phrases, we knew the primer teaching contractors how distributors call out fastener specs would be beneficial and probably save not only time but money when ordering screws.

And we know that the more information we arm contractors with on the screws they could be using to improve their business, the more we will be contributing to their success.

Self-Drilling Tech Data

What Are Self-Drilling Screws?

Self-drilling screws – also known as Tek® screws, self-tapping screws, pro points, drill screws and more – are manufactured with a drill bit tip instead of a point so that they can drill into heavier gauge metals without pre-drilling. In turn,  self-drilling screws save contractors money on the time they need to complete projects.  These screws are also self-tapping, which means that they tap their own threads as they enter a material. This unique feature makes them ideal for  HVAC, metal roofing, carports, barns and more.

Tek® Self-Drilling Screw Measurements

Each self-drilling screw has a designated wire diameter, otherwise known as a shank. Shank sizes increase in width as they ascend, but if you can’t tell the shank size of a screw, try narrowing it down based on the size of the hex head. To determine the shank size of a hex-headed screw, measure along the flat of the hex head:

  • 1/4″ hex drive (#6 or #8 screw shank)
  • 5/16″ hex drive (#10 or #12 screw shank)
  • 3/8″ hex drive (#14 screw shank)

Self-Drilling Tek® Screw Sizes

The most common Tek® screw (self-drilling screws) diameters are #6 to #14, with the highest number being the largest diameter. You can use self-drilling Tek® screws for numerous applications, including fastening metal to metal and metal to wood.

Self-drilling Tek® screws also have drill point classifications of one to five. The longer the drill bit, the thicker the material it can handle, with the number five drill bit as the longest. A #5 drill bit is a 1/2″ thick and can drill through up to 1/2″ steel.  Drill bit sizes two through five work well for metal applications.

Self-drilling Tek® screws are powerful enough to fasten sheet metal without pre-drilling. These four drill points work with metals, including but not limited to aluminum, stainless and steel. Overall, self-drilling Tek® screws give businesses an advantage over the competition by eliminating time spent on pre-drilling.

Find the Right Self-Drilling Screw for Your Project at All Points Fasteners

All Points Fasteners is proud to be a leading provider of Tek® screws for your metalwork projects. Learn how you can save time and increase your projects’ strength when you contact us today.