Self Drilling Screws or Tek Screws enable the assembler to quickly attach materials such as steel,
aluminium, composites or timber to steel section, or similar, up to 35mm thickness without the need for
any pre-drilling or thread tapping. Each screw features a special cutting tip and tapping thread the
design of which varies depending on the material that is being screwed into.
Increasingly
relied upon in modern construction projects where their speed and efficiency of use considerably reduce
labour costs.
We offer the full range of high performance Evolution self drilling screws each of which
are available in up to 4 material types.
The Evoshield coating provides what we think as the best
compromise between corrosion resistance and cost and is available on the majority of Evolution products.
Where
a higher level of corrosion resistance is required the A2 or A4 bi-metal variant provides a stainless
fastener with a high performance non-stainless cutting tip. Though costly, this option offers the best
of both worlds: a stainless tek screw capable of drilling through depths of steel up to 12.5mm.
A
lower cost zinc plated option is available where corrosion resistance is not a priority, such as for
internal ducting and metal framing applications.
The standard DIN 7504 in different head types
and materials, including stainless steel, are available for light duty applications where the high performance
of the Evolution range is not required.
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