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, making them ideal for joining roofing sheets to light section steel (maximum thickness of 5.0mm) without the need for pre-drilling. Technical specifications Size: 5.5 x 100mm Quantity: 100 Coating: Silver Ruspert Corrosion resistance: Withstands over 1000 hours of salt spray testing Thread type: Coarse self-tapping thread Other information Designed and manufactured to meet recognized industry standards and performance criteria.