Phillips II Plus Wood to Metal Screws have unique boring wings that make them
the ideal fasteners for attaching wood to metal. Best used on metal that is a minimum of .059" thick.
"Wings" bore through the wood and then break off when drilling into the metal. This provides a clearance hole in the wood for easier installation.
A drill point is needed for drilling through heavy-gauge steel with ease. Do not use Wood to Metal Screws when using thin sheet metal such as metal studs. Boring wings will not break off.
ACR stands for anti-cam-out recess. There are ribs on the driver bit that engage the patented recess to reduce stripping, provide increased torque, enhance off-angle drivability, and offer a stick fit that makes screw driving easier. Phillips II Plus Screws can be driven with a standard square bit, a Phillips Bit, and a Phillips II Plus Bit. For the features of the patented ACR system, we recommend the Phillips II Plus Bit that is included.