Tek Screws

Tek screws are self drilling screws designed to drill, tap and fasten into steel in one operation, reducing the need for separate pilot drilling. Our range covers carbon steel TEK 3 and TEK 5 drilling screws with bonded washers for fixing cladding, roofing sheets, liner panels and other components to light and heavy steel sections.

Looking for stainless? You can find great value stainless steel self-drilling screws here.

TEK 3 screws are intended for light section steel. The Evolution products in this range have a drilling capacity of 1.2mm to 4.0mm.

TEK 5 screws use a longer heavy-section drill point for steel from 4.0mm to 12.0mm. Their finer thread form is suited to thicker steel substrates.

Our current Evolution range is manufactured from SAE/AISI C1022 carbon steel and protected with a 500-hour EvoShield coating. Evolution also uses hardened, sharp drill points designed for quick drilling and consistent tapping into steel.

What Are Tek Screws Used For?

Typically fixing profiled roof and wall cladding, liner panels and general metal components to hot or cold rolled steel purlins and rails.

Choosing the Right Tek Screw

Start with the thickness of the steel you are fixing into. Use a TEK 3 screw for suitable light sections and a TEK 5 where the fixing needs to drill into heavier steel. Then select the screw length according to the total material build-up being fixed.

FAQs

Do Tek Screws Need a Pilot Hole?

Not normally. Their hardened drill point is designed to drill into steel and form the fixing in a single operation, provided the substrate is within the screw's specified drilling capacity.

What's the Difference Between TEK 3 and TEK 5 screws?

The main difference is drilling capacity. TEK 3 is designed for lighter steel, while TEK 5 has a longer drill point for heavier sections.