170PCS Roofing Screws with Rubber Washers 5.5x25mm Hex Head Self Tapping Screws Tech Screw for Metal Zinc Plated Corrugated Roofing Cladding Steel Screw for Tin Roof

• Package Contents：170 roofing screws, size: 5.5 x 25 mm. The self tapping screws feature a combined design with the screw head and washer integrated.
• High-Quality Materials：The tek screws are made of high-quality, durable steel with a zinc-plated finish, offering excellent corrosion resistance. This type of roofing screws with rubber washers features a special coating process that resists damage during installation. The coating offers strong resistance to mechanical wear, is highly durable during installation, provides excellent UV protection, and maintains long-lasting color that matches the roofing material.
• Easy Installation & Storage：Roof screws feature a hex head design that makes installation easier and helps prevent common issues such as slippage or breakage associated with Phillips screws. Installation and removal are both highly convenient. The specially designed self-drilling tip allows tech screws for metal to be installed more quickly and effortlessly, without the need for pre-drilling. It is recommended to use an appropriate wrench for installation to ensure both efficiency and safety.
• Corrosion Resistance & Durability：Tech screws are made of galvanized steel, making them strong, reliable, and long-lasting. Tek screws for metal are equipped with built-in rubber washers that prevent moisture from seeping through the screw holes, effectively sealing and securing connection points to enhance stability and prevent corrosion. The rubber washers offer excellent elasticity and can withstand high temperatures, thereby extending the product’s service life.
• Wide Range of Applications：Tec screws are suitable for various uses, including securing metal sheets, installing gutters, and assembling metal roof structures. Corrugated roofing screws are also ideal for fastening metal sheets and profiles to wooden substrates. Their strong resistance to mechanical damage during installation is a significant advantage, ensuring reliable performance throughout the process.

170 PCS 5.5 x 25 mm Roofing Screws Product Features: 1. Galvanized steel construction with washer design ensures excellent weather resistance. 2. Use appropriate socket tools during installation to prevent coating damage and corrosion. 3. Overlapping screws: Suitable for joining the edges of metal sheets (not for base anchoring). 4. This self tapping bolts is suitable for installing corrugated sheets, sandwich panels, and similar materials, making it ideal for constructing weather-resistant roofs while saving time and labor by eliminating the need for pre-drilling. 5. Each self tapping screws includes a rubber sealing washer to prevent moisture and air from entering indoor spaces. Application Details: The 5.5 x 25 mm self drilling screws are especially suited for fixing overlapping metal sheets and for sealing applications. Self tapping metal screws is commonly used at the raised edges of metal sheets (high-rib positions), where they do not come into direct contact with the underlying base. Specifications: Size: 5.5 x 25 mm Quantity: 170 pieces Notes: These self tapping screws metal are not suitable for use with aluminum sheets. Manual measurements may vary by 1–2 cm. Thank you for your understanding. If you have any questions, feel free to contact us — we are here to help.