No additional plugs required, making the WHO screw a user-friendly and time-efficient fixing solution.
Made of hardened steel, electro-zinc coated
Imposes less stress on substrate during installation due to no expansion force
Small hole diameter giving high loads
Easily removed for temporary works
Suitable for use in pre-drilled 6mm diameter concrete, full and hollow bricks, stone and structural clay tile and without pre-drilling in aerated concrete and timber
Applications include use with door and window frames, suspended ceilings and lightweight steel angles