8mm (5/16") standard hexagon washer head fastener.
Minimum recommended embedment 32mm
These screws tap a thread into Brickwork/Concrete without the need for plugs.
They give a high reliable pullout performance providing a permanent fix without any stress (bulb of pressure) problems. They also provide a higher fire resistance.
Application: Predrill hole through sheet into substrate (Brick/Concrete) Tap in anchor. Not suitable for light weight block.
Use a purpose made screwgun for installation. Cordless drivers and drill drivers are ideal with torque set on medium to high on a low speed and in driver mode. Please note: Impact drivers should not be used under any circumstance and automatically voids any warranties.