Self-drilling phosphate screws for joining WS profiles 3.5x35 mm Pack of 1000 pcs /1000pkg/ WS-3535

Self-drilling screws for steel profiles – quick installation and durable connection

These phosphate-coated Koelner WS-3535 self-drilling screws are an optimal solution for efficiently joining steel profiles in drywall systems. Thanks to the self-drilling tip, installation is much faster, eliminating the need to pre-drill pilot holes. This saves time for both professionals and DIY enthusiasts. These screws are used not only in residential construction but also in commercial and industrial structures.

Construction and properties

The screws are made of low-carbon steel, which has undergone galvanic phosphating. This coating provides good corrosion resistance in dry environments, which translates to a longer service life of the connections. The precise thread guarantees a secure and stable fastening of structural elements. A diameter of 3.5 mm and a length of 35 mm make the screws universal and suitable for most standard steel profiles with a thickness of up to 24 mm. The ability to drill up to 2 mm further facilitates work and minimizes the risk of material damage.

Applications and benefits

WS-3535 screws are ideal for:

• joining steel profiles during the construction of partition walls and suspended ceilings.
• mounting structural elements made of thin-walled steel.
• work requiring a quick and durable connection of metal elements without the need for additional tools (such as a drill).
• professional installation of drywall systems, where precision and installation speed are important.

The package contains as many as 1000 pieces, making it an economical choice for both large construction investments and regular renovation work. The weight of the package is 1.81 kg. They meet the DIN50942 standard, which confirms their high quality and compliance with European safety standards.