Screw WKW 8х400 zinc TX40 Domax

WKW Cylindrical head thermal insulation screws are designed for above-rafter insulation systems for wooden structures. The double thread—longer for rafters, shorter under the head for counter battens - eliminates the problem of excessive pressure on the insulation.

Thanks to the small cylindrical head, the screw can be screwed into the base at any angle. The head is hidden in the material without the need for prior expansion of the hole, and the drill tip allows the screw to be easily screwed in without prior drilling. High pull-out resistance allows WKW screws to be used in many other wooden structures.

Area of application: construction; roofing; wooden house construction; installation of thermal insulation systems.

Material: steel.

Coating: zinc. Zinc protects against corrosion if the fasteners are to be used in aggressive environments.