The typical slotted head is most effective made use of with a flat screwdriver, while the cross-shaped indention is best suited to a Phillips screwdriver. A Robertson screw features a square-shaped indention and demands a matching driver head. You cannot make use of a pozi driver with a Philips drive https://timco-screws53075.eedblog.com/28417715/5-tips-about-wood-screws-you-can-use-today