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| Quantity: | |
M5, M6, M7, M8, M10, M12, M14
7.64
| Specification Category | Values/Range |
| Product Name | Solar PV Hanger Bolt |
| Material | Carbon Steel, Stainless Steel |
| Finish | Galvanized, Zinc-Plated, Stainless |
| Thread Type | UNC (Unified National Coarse), Metric |
| Diameter | 6, 8, 10, 12 (common sizes) |
| Length | 50-300 (depending on application) |
| Load Capacity | Up to several thousand kg (depends on size and material) |
| Strength Grade | 4.6, 8.8, 10.9 (common grades) |
| Head Type | Hex Head, Flange Head |
| Drive Type | Phillips, Slotted, Socket |
| Application | Roof-Mounted, Ground-Mounted |
| Temperature Range | Typically -40°C to 120°C |
| Certifications | ISO 9001, CE Marking |
This series of photovoltaic double-head screws (also known as roof photovoltaic double-head bolts or wooden house support double-threaded rods) are integrated fixed and sealed fastening components specifically designed for distributed photovoltaic roof support systems. They cover two core styles: the wood-tooth style (suitable for wooden roof trusses) and the drill tail style (suitable for steel roof trusses). They integrate the functions of fixation, connection, and waterproofing.
The screw body is made of 304/316 stainless steel and adopts a double-threaded integrated design: one end is a hardened self-drilling / drill tail tooth that can be directly screwed into wood or steel roof trusses; the other end is a precision machine-tooth thread used for connecting photovoltaic support beams or accessories; the middle is equipped with an EPDM (triple-chloroprene) waterproof rubber pad, along with a stainless steel nut, flat washer (for some models with square fixing plates). During installation, the roof fixation and gap sealing can be completed simultaneously, without the need for additional waterproof treatment. This fundamentally solves the roof leakage problem in traditional photovoltaic installations and is the core supporting component for household / industrial and commercial photovoltaic roof projects.
Core structure: Integrated double-thread design: One end is self-drilling / countersunk head (fixed roof truss), the other end is machine thread (connecting bracket), with EPDM waterproof rubber pad in the middle, equipped with stainless steel nuts / flat washers / square fixing plates.
Material configuration: Screw body: 304/316 stainless steel; Waterproof rubber pad: EPDM (triple rubber) rubber; Fasteners: Stainless steel nuts / flat washers
Adaptation specifications: Thread specifications M8/M10/M12, length 100-300mm selectable, supports non-standard customization; Compatible with two roof types: wood / steel roof truss
Performance: Resistant to salt spray corrosion, high and low temperature aging, waterproof sealing, anti-vibration and anti-loosening, same lifespan as photovoltaic power stations
Installation compatibility: No pre-drilled holes required for installation, no additional waterproof treatment needed, compatible with regular wrenches / electric tools, single person can complete installation
One-step installation without drilling, efficient construction with waterproofing
Self-drilling / tail-end screw can be directly screwed into the purlins without pre-drilling; the waterproof rubber pad seals the roof simultaneously during the tightening process, sealing the gaps between the threads and the purlins, eliminating the need for additional waterproofing glue or installation of waterproof sheets. The construction efficiency is over 50% higher than the traditional drilling method, completely eliminating the risk of roof leakage in the future.
All stainless steel + anti-aging rubber pad, long-lasting and durable
The screw body is made of 304/316 stainless steel, resistant to salt spray, corrosion, and not afraid of outdoor sun exposure, rain, and coastal high-salt environments; the EPDM waterproof rubber pad is resistant to high and low temperatures (-40℃~120℃), anti-aging, and does not crack or harden during long-term outdoor use, and can have the same lifespan as the power station, significantly reducing the long-term operation and maintenance costs.
Two specifications for compatibility, covering wood / steel purlins scenarios
The wood-tooth model has a sharpened tail, suitable for pine, anti-corrosion wood, etc., and can be screwed in smoothly without splitting; the drill-tail model comes with a drill-tail tip, suitable for steel purlins / color steel tiles, and can penetrate directly without pre-drilling; both models are compatible with most mainstream photovoltaic support accessories, with strong versatility.
High pre-tightening force + double protection of sealing, resistant to wind vibration without loosening
The stainless steel thread is combined with the matching nut, with stable pre-tightening force, capable of withstanding the continuous impact of typhoons and heavy rain, and not prone to loosening and falling off during long-term outdoor use; the waterproof rubber pad also serves as a buffer, reducing the impact of wind vibration on the roof, protecting the roof structure.
Multiple specifications adjustable, suitable for different roofs and supports
The screw length covers 100-300mm (custom non-standard length is available), the thread specifications are M8/M10/M12, and can be flexibly selected according to the thickness of the purlin and the installation height of the support, without the need for additional customized accessories, reducing procurement and inventory costs.
Residential wooden house / wooden structure roof photovoltaic project
Wooden tooth model is compatible with anti-corrosion wooden purlins and wooden roof, screws in smoothly without splitting, waterproof rubber pad seals the roof to prevent water leakage, stainless steel material is suitable for outdoor humid environment, ensuring the long-term stability of the support.
Industrial and commercial steel structure roof photovoltaic project
Drill tail model is compatible with steel purlins and color steel tile roof, no need for pre-drilling to directly penetrate, installation is efficient; waterproof rubber pad seals the threaded gaps to prevent water from seeping into the steel structure roof, suitable for factory buildings, warehouses and other industrial and commercial roofs.
Coastal high humidity / high salt fog environment photovoltaic project
316 stainless steel model has excellent salt fog resistance, EPDM rubber pad is anti-aging, can resist high humidity and high salt fog corrosion in coastal areas, prolongs the service life of the power station and reduces operation and maintenance costs.
Old roof photovoltaic renovation project
Installation without drilling does not damage the original roof structure, waterproof rubber pad is synchronized sealing, avoiding leakage problems during renovation, suitable for the renovation of wooden houses / steel structure roofs that have been in use.
General distributed photovoltaic support system
Compatible with most mainstream photovoltaic support accessories, can flexibly choose specifications according to the installation height of the support and the thickness of the purlin, no need for additional customization, is a universal core component for distributed photovoltaic roof projects.
Wind & Snow Resistance: Engineered to meet IBC 2021 and AS/NZS 1170.2 standards, reducing panel displacement risks by 60%.
Installation Speed: Pre-assembled kit cuts installation time by 40% per panel, critical for large-scale project deadlines.
Corrosion Warranty: 10-year warranty on galvanization, longer than industry average, backed by third-party salt spray test reports.
Engineering Support: Free load analysis for custom solar mounting designs, ensuring code compliance and optimal performance.
