M8 Dual-Thread Screws

Scope of Application

Specifically designed for connecting and securing TPO/PVC photovoltaic supports to purlins. Suitable for roofing systems with polymer waterproofing layers, such as TPO/PVC welded membranes, steel plates fully adhered with PVC/TPO, and sandwich panels.

Technical Advantages

• Self-Drilling Tip (Lower Section): Equipped with a No. 3 drill point and coarse thread design, allowing easy penetration into purlins while delivering high pull-out resistance

• Threaded Shank (Upper Section): Features a machine-threaded design below the head, enabling direct screwing into pre-tapped support bases for significantly improved installation efficiency and secure fastening.