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Choosing the Right Screws for Aluminium Profiles & Fabrication
Best practices for fastening aluminium window frames, solar rails, and extrusions. Avoid thread galling, electrochemical corrosion, and premature joint loosening.
Challenges in Aluminium Fastening
Aluminium is lightweight and naturally corrosion-resistant, but it is softer than steel and prone to galling and galvanic reactions. When mounting solar panels or assembling architectural window frames, use Bi-Metal Self-Drilling Screws (hardened carbon steel drill tip fused with an A2/A4 stainless steel body and shank).