1022A Carbon Steel Truss Head Self Drilling Screw 2

1022A Carbon Steel Truss Head Self-Tapping Screws are cold-forged from premium 1022A carbon steel. Carburizing heat treatment enhances surface hardness and tapping performance. They are commonly provided with anti-corrosion surface finishes such as galvanization, color zinc plating or black phosphating. The large-diameter low-profile truss head delivers an enlarged pressing contact area. These screws are used for connecting thin steel sheets, wood panels, plastic boards and hardware fittings, widely applied in furniture, light steel components, sheet metal and interior construction projects. The screws can form threads by themselves in pre-drilled holes or corresponding panels to simplify assembly procedures. The truss head distributes stress and reduces risks of material crushing or penetration. It effectively improves connection stability, construction efficiency and service life of finished assemblies.