Knauf Aquapanel Maxi Screws (SN) 4.2x25mm (1000)

Knauf AQUAPANEL® Maxi Screws (SN39) Collated are corrosion-protected screws for fixing Knauf AQUAPANEL® Cement Board Indoor to light gauge steel profiles (up to 0.7mm) and timber, and Knauf AQUAPANEL® Cement Board Outdoor to timber. 

They have a needle point and countersunk heads.