trio of ap tek screws
25/03/2022

If you need self-drilling, tek type, screws for your project, it’s important to know what type you need. There are several things to keep in mind when making a decision.

What You Should Know When Buying Tek Screws

There are many features to consider when buying tek screws. Before you buy, determine:

  • Head style: This aspect will determine how the screw distributes stress and what the finished surface will look like. For instance, hex heads are standard for heavy-duty applications like roofing and HVAC and lighter uses like fastening components to liner panels.
  • Shank size: Shank describes the thickness of the screw. A higher number shank means a thicker screw.  Think dress size.  A #12 is thicker than a #10 shank. You should use higher thicknesses for heavy-duty applications.
  • Length: On Hex heads, pan heads, modified truss heads and pancake head screws, screw length measures from right below the head to the screw tip. Choose this measurement based on how thick your materials are and how much grip you need. On countersinking screws, you would measure the entire screw since the full length of the screw will be embedded in the material.
  • Point type: Self-drilling screws, also known as tek screws, have four popular sizes – #2, #3, #4 and #5.  The higher the number, the thicker the metal the tek screw can penetrate. A #5 drill bit tip can drill through up to ½ inch steel.
  • Plating: Your screw’s outer coating affects its response to the surrounding environment. Zinc plating is standard but can also be found with ceramic coating.
  • Material:    The least expensive self-drilling tek type screws are manufactured in carbon steel.  They are also available in 410 stainless (magnetic) and 18-8 stainless (non-magnetic).  18-8 stainless and 300 series stainless are best used in aluminum.  410 stainless tek screws can be used in heavier gauges but can give you surface rust without compromising the integrity of the screw.  We even have bi-metal tek screws, where the drill bit tip is carbon steel but the body of the screw is non-magnetic stainless.  These screws are pricey but they do the job of drilling through steel but giving you the best in rust resistance.
  • Time: How many screws do you need, and when do you need them? Call us early enough, and we can ship the same day any items we have on the floor.  We offer painted screws for a cleaner look, however, custom paint colors will need time to prepare so don’t wait until the last minute to order!

Buy Tek Screws Based on Application

There are many types of tek screws for specific applications. Some specialized screw types include:

  • Heating and ventilation:  For commercial hvac our 10×3/4 hex washer head is the most popular.
  • Metal framing: You can use these screws to connect steel pieces.
  • Stitching screws: These screws work best for stitching cladding panels.
  • Reamer Tek screws: Choose these screws when you need to attach composites or timber to steel.
  • Beam Busters: When you’re working with thicker metal, these screws work where standard tek screws don’t.
  • Composite panel fasteners: These screws work for roofing applications, cladding, cold and hot rolled rails, and purlins. They also work well for fastening components and liner panels to heavy steel.

Buy Tek Screws From All Points Fasteners

At All Points Fasteners, our team is here to help you find the right tek screws for your project. Contact us today to learn more.

Head Screw Lady Since 1986! Specializing in breaking down the language barrier between suppliers and end users. During her 35 years working in the fastener industry, MaryLouise has worked directly with end users, contractor’s, OEM’S and DIY, as well working within the import industry, working with fastener manufacturers and distributors. This has given her the unique perspective of having the technical knowledge needed to perform in the fastener world but also be familiar with the needs of end users who don’t necessarily know the fastener jargon or applications to know exactly what they need for their jobs.