Wafer heads are Zinc Yellow Passivated with Coarse thread screws. Self-drilling screw for fixing concealed fixing clips to steel purlins. Drill capacity 4.4mm. Use No.2 Philips drive when fixing.
Wafer heads are Zinc Yellow Passivated with Coarse thread screws. Self-drilling screw for fixing concealed fixing clips to steel purlins. Drill capacity 4.4mm. Use No.2 Philips drive when fixing.