Self-drilling hex head screw with EPDM sealing washer for fastening through mild steel in metal brackets, components, steel sections and assemblies where a rubber seal is required. This screw is an all-rounder with countless applications in the steel construction field, however the fine thread has a slightly slower / more controlled install than its coarse thread counterpart leading it to have great precise installation characteristics. The flanged hex head lends to high pull-out strength and available in both zinc and galvanised coating making them perfect for internal and external applications. ICCONS self drilling hex head screw has a hardened steel point (tek point), and fine thread enabling the screw to drill and tap its own thread, without the need to pre-drill (please see screw self drilling capacities).