M10x250 Dual-Thread Bolt in A2 Stainless Steel for Solar Mounting
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Description
M10x250 Dual-Thread Bolt in A2 Stainless Steel for Solar Mounting
The M10×250 dual-thread bolt in A2 (1.4301) stainless steel is a key mounting component used in solar installations on pitched roofs. Its dual-thread design — wood thread on one end and M10 metric thread on the other — allows direct screwing into the roof rafter, followed by fixing an adapter or triangle using the included flange nuts. The integrated EPDM washer provides a tight seal at the point where it passes through the roof covering, protecting the structure from water ingress. The bolt is sold as a complete set with flange nuts and an EPDM washer — ready for immediate installation without the need to source additional fasteners.
Application and installation advantages
- Mounting of roof adapters and triangles for solar systems on pitched and flat roofs
- Compatible with sheet metal, shingle and roofing felt coverings — wood thread screws directly into the rafter
- Dual thread eliminates the need for separate anchors — a single component connects the roof structure to the PV system
- Austenitic A2 stainless steel guarantees durability and corrosion resistance in all weather conditions
- EPDM seal on the nut flange protects the penetration point against leaks
Thanks to its 250 mm length, the bolt provides adequate anchoring depth in the rafter, even with thicker layers of roof covering. The wood-threaded end screws directly into the timber roof structure, ensuring secure and stable fixing. The other end, with M10 metric thread, is used to fit the adapter — flange nuts with an EPDM seal clamp the mounting element in place while simultaneously sealing the point where the covering is penetrated. This design allows installation companies to complete the fixing quickly, without the need for additional sealing with silicone or other compounds.
Technical data
| Product Type | Double-Ended Stud |
| Thread type | M10 |
| Length [mm] | 250 |
Safety
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