Stainless Steel A2-70 Customized T Bolts are specialized fasteners designed for optimal performance in solar energy installations. The “A2-70” designation refers to the material’s grade and strength.

Material: Stainless Steel A2-70

• Stainless Steel A2 (AISI 304): This is an austenitic stainless steel known for its excellent corrosion resistance, especially in atmospheric and moderately corrosive environments. It contains approximately 18% chromium and 8% nickel.
• -70: This number indicates the tensile strength of the material. A2-70 means the bolt has a minimum tensile strength of 700 MPa (megapascals), signifying high strength suitable for demanding applications.

Customized T Bolt Design

• T-Head Shape: The distinctive “T” shape of the bolt head is specifically designed to slide into channels, rails, or slotted profiles commonly found in solar mounting systems. This design allows for quick and flexible positioning along the rail before tightening.
• Customization: These bolts are often customized in terms of:
  • Length: To accommodate varying thicknesses of solar panels, clamps, and mounting structures.
  • Thread Type: Common metric threads (e.g., M6, M8, M10) are used, with specific pitches to match corresponding nuts and components.
  • Head Dimensions: The dimensions of the T-head (width, height, shoulder) are precisely engineered to fit snugly and securely within the specific profiles of different solar rail manufacturers.
  • Surface Finish: While A2-70 is inherently corrosion-resistant, some customization might involve passivation for enhanced protection or electro-polishing for a smoother finish.

Application in Solar Energy

Stainless Steel A2-70 Customized T Bolts are critical components in photovoltaic (PV) solar panel mounting systems. Their primary roles include:

• Securing Solar Panels: They are used to fasten solar panel clamps (mid-clamps and end-clamps) to the aluminum mounting rails. The T-head slides into the rail’s channel, and a nut is tightened from above to secure the clamp and, consequently, the solar panel.
• Attaching Mounting Structures: They can also be used to connect different parts of the mounting structure, such as rail connectors or specialized brackets to the main rails.
• Versatility for Various Roof Types: Applicable for ground-mounted, roof-mounted (pitched or flat), and carport solar installations where aluminum rail systems are employed.

Key Benefits for Solar Energy Applications

• Corrosion Resistance: A2-70 stainless steel offers excellent resistance to rust and environmental degradation (UV, rain, humidity), essential for outdoor solar installations that need to last for decades.
• High Strength: The 700 MPa tensile strength ensures that the bolts can withstand significant wind loads, snow loads, and vibrations, keeping solar panels securely in place.
• Easy and Flexible Installation: The T-head design allows for easy insertion and flexible positioning within the mounting rails, speeding up installation and simplifying adjustments. This is particularly beneficial for large-scale solar projects.
• Durability and Longevity: The combination of corrosion resistance and high strength contributes to the overall durability and long lifespan of the solar mounting system, minimizing maintenance and replacement costs.
• Aesthetics: Stainless steel maintains its appearance over time, which can be an advantage in visible solar installations.