A one piece metal fastener with a dish profiled head for mechanically securing drywall and insulated plasterboard panels to walls. Prevents dot and dab plasterboard from falling on persons escaping a blazing building, or on persons entering a blazing building for rescue purposes. The fire-proof metal fastener has a self-tapping helical shank with work hardened blades able to cut into a wide range of masonry.
A one piece metal fastener with a dish profiled head for mechanically securing drywall and insulated plasterboard panels to walls. Prevents dot and dab plasterboard from falling on persons escaping a blazing building, or on persons entering a blazing building for rescue purposes. The fire-proof metal fastener has a self-tapping helical shank with work hardened blades able to cut into a wide range of masonry.