This solar mounting clamp block is designed to securely fasten HDG steel structures, ensuring strong and stable support for solar panel rails. As a reliable fastening component, it locks the mounting rail firmly to the beam, preventing movement or loosening over time. The clamp includes a bolt, washer, plastic wing nut, and a PVC Cap that holds the nut in place, enabling fast and convenient installation. Ideal for HDG ground-mounted solar systems, this clamp block enhances durability and efficiency in solar mounting solutions.