براغي صفائح معدنية #3 × 3-3/4 بوصة | فولاذ مطلي بالزنك (100/عبوة)

Finally found #3 sheet metal screws this long locally—the zinc plating seems thick enough to resist rust on outdoor metal shed repairs. They drove into 16-gauge steel cleanly with a hex bit, no snapping.

Worked perfectly for attaching a steel door frame to the concrete floor. The 3-3/4” length grabbed plenty of material, and the zinc coating keeps them from rusting in the damp basement.

Picked up these for some metal framing work and the #3 size fit perfectly in my driver. The 3-3/4 inch length gave me just the bite I needed into the steel studs, and the zinc plating seems like it will hold up well against a little moisture.