General description Timco's light section self-drilling screws are specifically designed for use with light section 5mm steel. These screws feature a hex head and a self-drilling tip, allowing for easy installation without the need to pre-drill holes. They are ideal for joining roofing sheets to light section steel. Technical specifications Size: 5.5 x 70mm Washer size: 16mm Quantity: 100 screws Max steel thickness: 5.0mm Other information Coating: Silver Ruspert, providing a durable corrosion-resistant finish Salt spray resistance: Over 1000 hours Manufactured to meet recognized industry standards and performance criteria