Heavy Duty Self-Drilling Screws

Our heavy duty self-drilling screws for metal are designed for fastening into thicker steel sections where standard self-drilling screws or TEK 5 screws would struggle.

Featuring drill points from TEK 7 upwards, and fine threads designed for engagement in metal, these screws can drill and tap into steel in a single operation. This saves time on site without the need for separate pilot holes when used within their rated drilling capacity.

Why Use Heavy Duty Self-Drilling Screws?

Heavy duty self-drilling metal screws are built for demanding steel-to-steel connections. Their hardened drilling points penetrate thicker material, while the threaded shank provides a secure fixing once installed.

Common Applications

Heavy duty self-drilling screws are commonly used for:

- Steel framing and structural steelwork connections
- Fixing brackets and components to steel beams or columns
- Industrial fabrication and metal assemblies
- Steel building construction and installation
- Attaching metal fittings to heavy-gauge steel sections

Drill Points, Materials and Performance

Heavy duty self-drilling screws use specialist drill points designed to cut into thicker steel sections than conventional self-drilling fixings.

TEK 7 spiral drill points can offer drilling capacities of up to 18.5mm in mild steel. This makes them useful for fastening into heavy-gauge steel beams, columns and structural sections.

Hardened carbon steel construction provides the drilling performance needed for demanding applications, while the protective coatings help resist corrosion. Head styles, thread designs and drilling capacities vary across the range, so always check individual product specifications before purchasing.

Choosing the Right Heavy Duty Self-Drilling Screw

The important consideration is the thickness of steel being drilled. Choose a screw with a drill point rated for the material, along with sufficient thread engagement to secure the connection.

Browse Heavy Duty Self-Drilling Metal Screws

Browse our selection of heavy duty self-drilling screws in different lengths and drilling capacities. 

Fixabolt supplies heavy duty metal fixings for steel fabricators, construction professionals and industrial installers across the UK. Browse available pack quantities or contact us through live chat if you can't find the size you're looking for.