Hex Washer Head Drill Screws from Leading Exporters & Manufacturers in China
Engineered for power tool installation, Aozhan's hex washer head drill screws feature built-in drilling capability that eliminates pre-drilling. Made from heat-treated alloy steel with zinc/Dacromet coatings (GB/T 15856.3 compliant), these screws combine drilling and tapping functions for outstanding performance in steel structures, color steel roofing and solar mounting systems. Their hex washer heads provide excellent torque transmission, making them perfect for outdoor projects and high-volume installations where efficiency is critical.
