The typical slotted head is finest made use of with a flat screwdriver, while the cross-shaped indention is best suited to a Phillips screwdriver. A Robertson screw has a square-formed indention and demands a matching driver head. The size of such screws varies, but most drywall screws have flat heads https://woodscrews97520.snack-blog.com/27992673/the-ultimate-guide-to-wood-screws