LITTLE KNOWN FACTS ABOUT TYPES OF SCREW HEADS.

Most anyone features a Phillips-head screwdriver sitting all over they're able to use to generate Phillips screws, as well as sizing of Phillips drill bits and screwdrivers is pretty straightforward. #sixteen. Phillips Tamper-Resistant. Two squares are overlaid at a 45° angle to produce an eight-pointed star in the double-square travel. The const