Self-drilling phosphate screws for joining WS profiles 3.5x25 mm Pack of 1000 pcs /1000pcs/ WS-3525

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

These phosphate-coated self-drilling screws, measuring 3.5x25 mm, are an indispensable element during works related to drywall systems. Designed for efficient joining of steel profiles, they allow for significant acceleration of installation thanks to the ability to drill and screw in one step. The package contains as many as 1000 pieces, making them an ideal choice for both professionals and those undertaking DIY projects.

Construction and application

The screws are made of low-carbon steel with a phosphate coating, which provides them with corrosion resistance in dry environments. The precise self-drilling tip allows drilling a hole with a diameter of up to 2 mm, eliminating the need to pre-drill the profile. They are particularly recommended for mounting structural elements made of thin-walled steel and joining steel profiles in drywall systems. The maximum thickness of the mounted element is 14 mm.

Advantages and benefits for professionals and users

• Quick installation: The self-drilling tip eliminates the need for pre-drilling, saving time and increasing work efficiency.
• Durable connection: The precise thread ensures a secure and stable fastening of structural elements.
• Corrosion resistance: The phosphate coating protects against the effects of moisture and protects against corrosion under typical working conditions.
• Compliance with standards: The screws meet the requirements of the PN-EN 14566+A1:2012 standard, guaranteeing high quality and safety of use.
• Versatility: Ideal for use in both residential and industrial construction.
• Efficiency: Large package (1000 pieces) reduces costs associated with frequent restocking.
• Ease of use: Just a screwdriver with adjustable torque – installation is simple and intuitive. Remember to use a depth limiter!

Thanks to these features, Koelner WS-3525 screws are an optimal solution for anyone who values quality, speed and reliability during installation work using steel profiles.