Extra-Long Heavy-Duty Solar PV Support Bolts

Product features:

This extra-long PV support bolt offers specialized performance for large-span solar installations. Its extended length range of 150mm to 300mm allows for use with thick racking components and deep foundation installations, making it ideal for large-scale ground-mounted solar farms with wide rack spacing. The heavy hex head design provides a larger bearing surface and increased torque resistance, reducing the risk of bolt head slippage during tightening and improving overall installation stability. The hot dip galvanized surface treatment provides superior corrosion resistance, passing a 500-hour salt spray test without visible rust, extending the service life of the fasteners to align with the 25-year typical lifespan of solar systems. The coarse metric thread ensures smooth threading into pre-drilled holes, avoiding thread jamming and improving overall installation efficiency. The 8.8 strength grade provides sufficient load-bearing capacity for most large-scale solar racking systems, ensuring stable fixation under moderate wind and snow loads.

Product specifications:

This extra-long heavy-duty PV support bolt has precise specifications tailored for large-span solar applications. The diameter range covers M10 to M20, with available lengths from 150mm to 300mm to fit large racking thicknesses and deep foundation installation depths. The heavy hex head has a wider width across flats than standard hex heads, allowing for higher torque application during installation. The thread follows the ISO metric coarse thread standard, with pitches ranging from 1.5mm for M10 bolts up to 2.5mm for M20 bolts, ensuring secure engagement with matching nuts. The hardness ranges from HRC 28 to 32, balancing strength and toughness to avoid bolt breakage during tightening operations. Each batch of bolts is inspected for dimensional accuracy, thread quality, and corrosion resistance, with a tolerance level of IT6 to ensure consistent performance across all units. The bolts are packaged in wooden pallets to prevent damage during transportation and storage for large-scale projects.

Product application:

This extra-long heavy-duty PV support bolt is primarily designed for large-scale ground-mounted solar farms with wide rack spacing, elevated solar installations with deep foundation requirements, and industrial solar projects with large mounting components. It can be used to secure long-span solar panel racks, cross beams, and rail components to concrete piers, steel piles, and heavy-duty foundations, providing stable fixation for solar arrays with capacities ranging from 500kW up to multi-megawatt scale projects. It is compatible with most large-scale aluminum alloy and steel PV mounting hardware, providing a reliable fastening solution for large solar installations. Installation workers can use standard socket tools to quickly tighten the bolts, reducing on-site labor time for large-scale projects. This bolt is not recommended for coastal high-salt environments, as its corrosion resistance may not meet the long-term requirements of such harsh conditions, making it ideal for inland and low-corrosion atmospheric large-scale solar projects.