Contractors and serious DIYers, if you work with sheet metal, you need to know about Malco Zip-in screws.

This 1000-pack of #8 size, 1/2-inch long zinc-coated screws is built for speed and strength.

The \Zip-in\ name comes from their unique double-thread design.

The super sharp, tapered starting thread is machined all the way to the very tip – this is what lets it pierce the metal instantly without pre-drilling.

Right behind it, a second thread engages and pulls the screw in fast and tight.

This design gives you complete control and prevents the screw from \walking\ or slipping off your mark.

They're heat-treated to be super strong at the point without being brittle, so they won't mushroom or break.

They can handle heavier gauge sheet metal and layered light-gauge materials better than most other self-drillers.

The head is an undercut-indented hex washer slotted style that always seats flush and won't strip out your driver.

Look for the trademarked dots on the head – that's how you know they're genuine Malco Zip-ins.

Whether you're doing HVAC work, metal roofing, siding, or any fabrication project, these screws will save you time and hassle.

The 1000-count bulk pack is perfect for jobsites or pros who go through a lot of fasteners.

Stop drilling pilot holes and start zipping these in.