Composite Panel to Heavy Section

Composite panel to heavy section screws are robust, long-reach self-drilling fixings developed specifically for securing insulated composite sandwich panels to heavy gauge purlins, rails and primary structural steel framing. Available in lengths from 65mm to 300mm with a #5 drill point, they are engineered to penetrate the full panel depth and drill reliably into steel thicknesses from 4.0mm up to 12.0mm in a single operation. These screws feature an aggressive high-thread profile that provides superior grip, excellent pull-out resistance and strong clamping force through the insulation core and outer metal skins. The heavy-duty self-drilling point combined with the fully threaded shank ensures fast, accurate installation and dependable load transfer in more substantial frameworks. Supplied with bonded EPDM washers as standard, they deliver reliable weather sealing and even load distribution at every fixing point, making them ideal for higher-load or wider-span composite panel roofing and cladding systems.