Exterior screws with Conical Head - KKT | Rothoblaas
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Exterior screws with Conical Head - KKT | Rothoblaas

  • Use

    Exterior; appropriate for service classes 1-2-3
  • Applications

    Fastening facade and terrace
  • Characteristics

    Resistant to corrosion in aggressive environments, hidden and durable fixation
  • Colors

    Available in carbon steel with special coating and in A4 stainless steel
  • Sizes

    KKT: diameter 5 and 6 mm / length from 40 to 120 mm | KKT stainless steel A4: diameter 5 mm / length from 20 to 80 mm
  • Certification

    CE according to ETA

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More about this product

Rothoblaas presents the KKT screw for outdoor use with a conical head of small dimensions for an optimal concealment effect on the wood.

Underhead Counter-Thread

Inverse underhead thread (left-handed) for excellent grip.

Triangular Thread

Front triangular thread for excellent grip and wood penetration.

Colors & Materials

The carbon steel version with an organic coating is available in five different colors and is equipped with a double-notched self-piercing tip that increases the cutting capacity of the fibers during screwing; the A4 stainless steel version is equipped with a self-piercing tip with a single notch and is also available with a brown or gray head. The version with total thread is recommended for fixing in coupling with connectors for terraces and facades. The tip is included in each package for all versions.


Invisible Head

Aesthetically pleasing and long-lasting fastening, thanks to the extremely small conical head that becomes ever less visible in the wood as time goes on.

Tightening Force

The inverse underhead thread generates excellent grip capacity for the screw, which allows for a perfect closure of the joint as well as a stable fastening. The double-notched tip increases this effect.

Aggressive Environments

A4 stainless steel screws guarantee excellent resistance to corrosion even in very aggressive environments. The A4 version with a colored head is ideal for invisible fastening.

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Screws - HSB Hardwood

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