The normal slotted head is finest used having a flat screwdriver, even though the cross-formed indention is best suited to some Phillips screwdriver. A Robertson screw incorporates a sq.-formed indention and requires a matching driver head. The duration of these screws may differ, but most drywall screws have flat heads https://lukasjkjgf.blog5star.com/28946418/top-guidelines-of-wood-screws