The double-threaded screw is designed for mounting on roof panels, boards, shingles, or tar paper. This product features a double-threaded screw with different threads at both ends. One end is designed for easy fastening to wooden roof structures, while the other end allows for secure mounting of flange nut adapters.
The mounting adapter for installing photovoltaic systems is made of stainless steel, ensuring durable performance for many years without the need for replacement.
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