. No additional plugs are required for screw installation, thus allowing work to progress quickly and economically.
. The small drill bit diameter of 6 mm allows for efficient work, including in the case of series installation.
. The continuous thread prevents the window frame from being pulled against the substrate, and ensures a stress.free and long.lasting fixing of the frame.
. The optimised special thread reduces the amount of force required for screwing in the screws, meaning that the installation process can be completed without the use of too much force.
Note the drill hole and screwin depths for the different building materials listed in the table
In order to avoid the screw twisting during installation in concrete, the maximum anchorage depths stipulated must be adhered to
Cylinder head screws are recommended for recessed installation in wooden profiles
Flat head screws are recommended for installation in plastic and aluminium profiles