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Heavy-Section Self-Drilling Screw with Spiral Flutes for 25mm steel plate
A standard 30mm drill point can reach the depth, but the deeper it goes, the harder it is for the chips to escape.
That’s why we added spiral flutes behind the drill tip — they help evacuate the chips more efficiently during deep drilling.
The flute design also helps streamline production, making the manufacturing process faster and more stable than traditional spiral-flute screws.