Self-drilling fine thread screws are used for fixing into metal such as in carport, shed, garage and steel frame construction. The hardened steel self-drilling point (often going by its proprietary name tek point) can self-drill through varying gauges of mild steel without the need for pre-drilling (see product attributes for material thickness constraints), accompanied by 24 TPI (thread per inch) fine thread to tap its own thread into the steel. With its countersunk head, self-drilling (tek) point and fine thread, this screw is ideal for steel construction where a discrete finish is required.
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