Direct Assembly Screws

ecosyn® drill Self-Cutting Screws for Metal

This premium self-cutting screw is ideal for joining aluminum or galvanized steel sheets in just one work step. Save up to 50% compared with conventional tapping screws.

A silver ecosyn drill self-cutting screw for metal on light grey background with the blue ecosyn logo in the top right corner.
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Two people discussing design of a fastener.

ecosyn® drill self-cutting screws are particularly suited for use in constructions made of aluminum and galvanized steel sheets up to a hardness of approximately 125 HV (tensile strength Rm max. 420 N/mm²). They are made from case-hardened steel and are zinc plated blue (free of CrVI).

ecosyn® drill Screw Details

Advantages of Self-Cutting Screws

Stamped drill points: safe and secure drilling without the need for prior centre punching

Self-cutting screws drill their own tapping hole to close tolerances and form their mating thread themselves. The specially formed and stamped drill point prevents any drifting around the surface of the component and allows rapid spot drilling. There’s no longer any need to center punch the drilling point.

Savings of up to 50% are possible compared with conventional tapping screws.

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Stamped drill points: safe and secure drilling without the need for prior centre punching

Application Areas

  • Sheet metal constructions
  • Heating and ventilation ducts
  • White goods
  • Vehicle body construction
  • Window frames and blinds
  • Façade constructions

Features

  • No drilling or thread-tapping tools needed
  • No center punching
  • No offset problems with pre-drilled holes
  • No additional securing elements needed
  • Quick and easy to install
  • Cost-effective

Please note: When using galvanically zinc-plated self-cutting screws (tensile strength≥1000 N/mm² or 320 HV) the risk of hydrogen embrittlement (delayed brittle fracture) cannot be entirely excluded.

Download More Information

Thumbnail Self-Cutting Screws Brochure

Self-Cutting Screws Brochure

Learn more about self-cutting screws from Bossard – direct screwing in one step.

1.4 MB | pdf