Metal Construction Light Section Screws - Hex - Self-Drilling - Bi-Metal - Exterior - Silver Organic Large head provides easy and

Large head provides easy and secure attachment

A specialised fastener designed to securely fix and clamp floorboards to joists

When the wings hit the metal they will break off to permit the thread to self-tap into the metal

The flat underside of the screws head allows it to clamp the materials together firmly

Heavy duty and high grade EPDM washer with A2 stainless steel cap to provide a water-tight seal

Metal Construction Light Section Screws - Hex - Self-Drilling - Bi-Metal - Exterior - Silver Organic Large head provides easy andHex head self drilling screws, for joining roofing sheets to light section steel (Max. 5. 0mm) without the need to pre drill a hole.