The signature blue concrete screws are made of carbon steel and wrapped in a corrosion-resistant coating that holds up against chipping, weather, and other abrasions.
The star flat head concrete screws, commonly known as Torx flat-head screws, save time on big jobs due to the number of entry points in the star screw pattern making it easier to align the driver. Flat head screws can also handle a lot of torque and are more resistant to camming. The Phillips flat-head self-centers, making it easy to install with both powered and manual screwdrivers. The countersunk nature of this screw creates a clean look once installed.
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