The Pan Head Self Tapping Drill Point Screws are 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. Specifications • Material: Carbon Steel • Head Type: Pan • Point Type: Self-Drilling • Size: 4.2 x 13mm • Pack Dimension L x W x H: 135 x 90 x 60mm • Thread Type: Self-Tapping • Finish: Zinc • Quantity: 1000