M10×200 A2 Double-Threaded Screw for PV Adapters and Triangles with EPDM Gasket

The M10×200 double-threaded screw made of A2 (1.4301) stainless steel is a key fastening element in photovoltaic mounting systems on pitched roofs. Its design featuring two different thread profiles allows one end to be driven directly into the timber roof structure, while the other end — with an M10 metric thread — is used to fix roof adapters using the included flange nuts. The set is complete and ready for installation: the package contains the screw, flange nuts and an EPDM washer, which ensures a watertight seal at the point of roof penetration. Thanks to the use of austenitic A2 stainless steel, the component provides exceptional corrosion resistance in all weather conditions, guaranteeing many years of maintenance-free durability for the installation.

Application and installation benefits

The screw has a total length of 200 mm, ensuring adequate anchoring depth into the rafter even with thicker roof coverings. The wood-threaded end features an aggressive thread profile enabling secure driving into the roof structure elements, while the M10 metric thread at the top allows precise adjustment of the adapter height using the flange nuts. The EPDM washer fitted on the shank seals the roof penetration point, protecting the structure against water ingress.