Generally used for attaching steel hardware to steel reinforced PVCu sections. The flat underside of the screws head allows it to clamp the materials together firmly. Approval All tested to BS EN ISO 9227:2006. UKAS Accredited. In accordance with BS 7412 and both the BPF and GGF guidelines. Corrosion Rating 2 - Occasionally damp/wet, rural and sheltered areas Description Generally used for attaching steel hardware to steel reinforced PVCu sections. The flat underside of the screws head allows it to clamp the materials together firmly. Driver Bit Size PH2 Finish Zinc Head Type Pan Length mm 19 Material Carbon Steel Max Drilling Thickness mm 3.0 Pack Dimensions L x W x H mm 135 x 90 x 90 Pack Weight kg 1.903 Point Type Self-Drilling Product Code 132Z Recess Type Phillips Size mm 4.2 x 19 Substrates Steel Thread Dia. mm 4.2 Thread Type Self-Tapping