Photovoltaic power stations are mostly deployed in outdoor environments, and their systems are required to continuously withstand severe natural conditions such as rain erosion, ultraviolet radiation, high and low temperature cycles, and salt mist corrosion within a 20–25 year life cycle. Therefore, the fastener—especially the screw—has high requirements in material selection, structural design, corrosion resistance, and anti-loosening capability.
As the core mechanical bearing structure of the power station, the PV bracket not only supports the PV modules but also bears key functions such as wind resistance, earthquake resistance, and compression resistance. The long-term stability of the system depends more on the reliability of the fastening connection than on the support design and component quality.
As the most numerous and widely distributed basic connectors, the performance of screws is directly related to the operational safety of the entire power station. Whether it involves structural support connections, inverter installation, electrical equipment fixation, or outdoor cabinet sealing, screw reliability profoundly affects wind and seismic resistance, corrosion performance, and overall system lifespan.
Once screws loosen, rust, or fail due to fatigue, serious failures such as module displacement, loose support structures, or poor electrical contact may occur. Therefore, scientific selection of high-performance screws and fasteners is essential to ensure long-term stable operation and extend the service life of PV power stations.
Recommended Screw Types for Outdoor Durability
- Sealing Screws
Sealing screws effectively prevent rainwater from seeping into joints, enhancing the weather resistance of connections. Suitable for critical bracket nodes.
- Stainless Steel Screws
Made of 304/316 stainless steel, these screws offer excellent corrosion resistance, making them particularly suitable for coastal, high-humidity, and high-salt-spray environments.
- Dacromet or Zinc-Nickel Surface-Treated Screws
Surface treatment significantly improves corrosion resistance and reduces the risk of loosening due to rust.
In the full life cycle of a PV system, high-quality screws not only influence structural stability but also directly impact long-term performance and maintenance costs. Selecting a reliable fastener supplier is essential for ensuring project quality and minimizing risks.
YH FASTENER has long been engaged in the photovoltaic sector, specializing in outdoor corrosion-resistant screws, anti-loosening fasteners, and sealing-performance designs. Through cold heading, CNC precision machining, and automated inspection, we ensure stable and consistent product performance across every batch—meeting multi-scenario requirements from support systems to inverters and electrical cabinets.
Our reliable fastening solutions enhance the durability of PV projects and provide customers with greater confidence in long-term operation.
Contact YuHuang today to discover how our high-performance fasteners can elevate your new energy initiatives and contribute to a sustainable energy future.
Post time: Dec-02-2025
