Adjustable Screw for Concrete (Brick) Surfaces

The adjustable screw for concrete, brick and block surfaces is used together with construction wall plugs. After marking, a channel is drilled into the base, into which the wall plug is driven. The screw, threaded along the full length of the working shaft and with a hexagon head, is then screwed into the wall plug’s inner cavity. Adjustment is performed with a suitably sized wrench: turning clockwise screws the fastener into the base, turning counterclockwise unscrews it. The screw is used as a fastening and adjustment device when installing window and door frames and frames for facing panels.

The adjustable screw has a shank diameter of 6 mm and a length from 70 mm to 120 mm. It is made of carbon steel, which ensures high strength properties. It is corrosion-resistant thanks to a zinc coating applied in electroplating chambers.

L (mm)	d
	6.0
70
80
90
100
110
120