TG Hexagon Head Self-Drilling Screw with EPDM Washer 12-14x35-53 CL3

Product Overview
The TG hexagon head self-drilling screw is a high-performance self-drilling and self-tapping fastener specifically developed for steel structure enclosure systems. It integrates drilling, tapping, and locking functions into one unit, enabling direct penetration through steel sheets and forming a firm connection without pre-drilling; paired with a highly weather-resistant EPDM rubber washer, it simultaneously provides both fastening and waterproof sealing functions. The product surface is treated with a high-corrosion-resistance zinc plating process, demonstrating excellent performance in neutral salt spray tests, and is capable of long-term adaptation to complex outdoor environments. It is widely used in various steel structure roofing and wall projects.

Product Applications
Connection of color steel tile roofing/wall panels to purlins in steel structure workshops, warehouses, and prefabricated temporary buildings.
Installation and fixing of metal sheets, such as profiled steel sheets and galvanized sheets.
Fastening of outdoor metal structures, including sunrooms, canopies, billboards, and carports.
Composite roofing/wall systems with insulation layers, adaptable to installation scenarios with varying insulation thicknesses.