DIN7504K-Hex Washer Head Self Drilling Screws

Hex head with integrated washer recess, accurate hex positioning and widened washer disk to disperse locking pressure and protect plate surface.

Integrated stainless steel molding without falling off, waterproof and rust-proof, highly adaptable for outdoor steel structure and light installation of photovoltaic brackets.

Screwing in smoothly without jamming, compatible with manual and electric tools, labor-saving and efficient for mass installation, and has good sealing performance, which can effectively prevent moisture and dust from entering the screw hole and extend the service life of the screw.

After the screw is fully locked, the two side fins will be automatically sheared off without affecting plate fitting, realizing anti-crack reaming in early stage and flat installation in later stage, balancing practicability and appearance.