General description These TIMCO Self-Drilling Light Section Composite Panel A2 Stainless Steel Bi-Metal Screws are specifically designed for attaching composite panels to light section steel, with a maximum thickness of 5mm. They feature a self-drilling point for easy installation and a hexagon head for secure fastening. Technical specifications Dimensions: 5.5/6.3 x 70 mm Material: A2 Stainless Steel Type: Bi-Metal Screws Thread: Split thread