The Environmental Threats
Solar photovoltaic and energy storage projects are long-term structural investments designed to operate for 25 to 30 years. However, they are consistently exposed to the absolute harshest outdoor conditions. In coastal regions, high humidity combined with aggressive coastal salt spray (C5-M corrosion class) initiates rapid galvanic corrosion on standard steel components. At the same time, intense tropical solar radiation accelerates coating degradation.
Beyond chemical corrosion, mechanical stresses represent a major point of failure. Solar tracking systems constantly rotate to follow the sun, generating continuous structural vibration. Energy storage containers, holding high-density battery racks, experience persistent internal harmonics and external seismic or wind-load vibrations. Under these conditions, traditional bolt-and-washer configurations quickly loosen, leading to structural instability, electrical faults, and catastrophic safety failures.
Our Specialized Solution
At FASTO, we specialize in manufacturing high-durability, system-specific fastening components engineered specifically to withstand these extreme parameters. Our products are widely deployed in high-temperature, high-salinity environments across Brazil, Latin America, and coastal regions globally.
By replacing multi-piece split assemblies with advanced integrated flange bolts and customized anti-vibration lock systems, we ensure structural integrity. Our advanced coatings, including multi-layer Ruspert, heavy-duty Hot-Dip Galvanizing (HDG), and premium stainless steel grades, deliver exceptional salt spray resistance, significantly reducing maintenance costs and ensuring the absolute safety of solar farms and battery cabinets.
Integrated Design & Anti-Vibration
Our integrated flange design replaces traditional separate bolts and washers. The expanded contact area distributes clamping force uniformly across the joints. This mechanics-focused design effectively prevents loosening under the high-frequency vibration of solar tracking systems and energy storage cabinets.
Superior Corrosion Protection
We utilize advanced surface treatments including multi-layer Ruspert, Hot-Dip Galvanizing (HDG), and premium Stainless Steel (SS304/SS316). These coatings offer outstanding salt spray resistance (up to 1500+ hours), making them perfect for tropical, high-temperature, and coastal regions.
Optimized Installation & Inventory
By using integrated fasteners, field installers handle only a single component instead of three (bolt, flat washer, spring washer). This speeds up onsite installation by up to 40%, reduces the risk of dropped parts, and simplifies inventory tracking and procurement logistics.
Solar PV Mounting Systems
Engineered to secure solar panels, ground mounts, and tracking systems under severe wind loads and environmental exposure. Our PV range ensures that structural connections remain rigid throughout the lifecycle of the solar power plant.
- ✔ Flange Self-Drilling Screws: High-penetration tips optimized for steel structures.
- ✔ High-Strength Flange Bolts: Classes 8.8 and 10.9 for high shear resistance.
- ✔ Stainless Hex Bolts: Grade A2/A4 (SS304/SS316) for extreme corrosion resistance.
- ✔ Lock Nuts & Expansion Anchors: Prevents loosening on ground mounts and concrete foundations.
Energy Storage & Battery Containment
Customized fasteners designed for battery cabinets, power conversion systems (PCS), and containerized storage units. These products focus on electrical safety, vibration mitigation, and spatial compactness.
- ✔ Anti-Vibration Flange Bolts: Serrated designs to lock securely into metal plates.
- ✔ Insulated Sems Screws: Protects delicate electronics from short-circuits and leakage currents.
- ✔ Precision Stainless Screws: Tight tolerances for battery cell connection racks.
- ✔ Rivet Nuts & Threaded Studs: Provides strong load-bearing threads in thin-walled cabinets.
Founded in 2005 and ISO 9001 certified, FASTO is a professional manufacturer and global supplier of high-performance fastening systems. While we specialize in Bimetal Self-Drilling Screws for demanding environments, we offer a comprehensive portfolio of precision hardware—including bolts, nuts, anchors, washers, pins, nails, and rivets.
By integrating diverse manufacturing capabilities with essential industrial tools and accessories, FASTO serves as a versatile one-stop partner, providing complete fastening solutions for construction, energy, and general industrial projects worldwide. Our technical engineering division continuously develops customized solutions to meet the specific requirements of solar tracking systems and high-capacity battery enclosures.
To ensure stable, high-performance mechanical properties under harsh operating conditions, we execute rigorous quality control protocols. Every batch of PV and energy storage fasteners is fully trace-tested to verify structural integrity and prevent unexpected onsite failures.
Mechanical Integrity Verification
We conduct comprehensive tensile, shear, and hardness testing to verify that our high-strength fasteners can withstand intense wind loads and high-frequency structural vibrations without fracturing. This prevents joint failures on tracking frames.
Microstructure & Coating Analysis
Using advanced metallurgical analysis and microscopic coating thickness gauges, we verify the consistency of our protective layers. This step is critical in eliminating the risk of hydrogen embrittlement in high-strength carbon steel fasteners.
Comprehensive Certification
All orders are dispatched with complete technical documentation, including material test reports (MTRs), salt spray test logs, and compliance certifications. This simplifies structural audits for international projects.
Quick Response
24-Hour online support. Technical inquiries and quotes resolved within 12 hours.
Fast Delivery
Fast shipping within 3 to 5 days for standard stock components.
Factory Supply
Direct-from-factory pricing with high efficiency and complete quality oversight.
Free Samples
We provide free samples within 7 days for physical testing and structural approval.
Professional Design
In-house engineering teams specializing in customized structural connections.
Customization (OEM/ODM)
Tailored dimensions, materials, and specialized high-corrosion coatings.
2005
Founded on high-quality structural fasteners, FASTO established its primary production facility and office, commencing large-scale, high-volume production of bolts and nuts.
2008
Building on a solid industry reputation and growing demand, we expanded operations and established our second manufacturing plant.
2013
The production scale continued to expand as we entered global markets, actively participating in major hardware and energy exhibitions worldwide.
2015
Obtained numerous authoritative national and international certifications, marking a major technological leap in high-strength bimetal screw manufacturing.
2018
Established long-term, stable partnerships with EPC contractors and solar system integrators across multiple continents.
2022
Focused on continuous product improvement, optimization of anti-corrosive coatings, and entering the high-growth energy storage market.
2024
To support our ongoing international growth, we relocated our sales and technical support operations to a new, state-of-the-art office tower.
2025
FASTO expanded its global footprint by establishing a dedicated subsidiary (LLC) in Saudi Arabia to serve the Middle East's growing renewable energy sector.
FASTO Global Sales & Support
Whether you are designing a utility-scale solar project all over the world, specifying battery racks for a containerized BESS, or seeking high-corrosion fasteners for marine applications, our engineering team is here to assist.
Online Sales Office: Room A-907, Greenland Center, 2nd Zhang Ba Road, Yan Ta District, Xi’an, China
Carbon & Stainless Steel Plant: Xi Zheng He Village, Zhong Tang Town, Bin Hai District, Tianjin, China
Bimetal Screws Plant: Guang Shun Street, Rong Chang District, Chongqing, China
Contact Information
Email Support: info@fastoscrews.com
Tel / WhatsApp: +86 13709297208
Technical Hours: Inquiry response guaranteed within 12 hours.