Features and use of Hardware screws : Features: 1. Drilling; tapping; locking in one operation; binding force is strong. 2. To save construction time; improve efficiency. 3. Specialized in manufacturing; quality assurance. Applications of Hardware screws : 1. Stainless steel plate; metal plate; galvanized steel; engineering installation. 2. metal curtain wall; metal light compartment; plastic doors and windows; and other indoor and outdoor installation. 3. general angle; channel; iron and other metals combined installation (Steel Structure) . 4. vehicle compartment; container; shipbuilding; refrigeration equipment; environmental engineering assembly projects.