The regular slotted head is best utilised with a flat screwdriver, though the cross-shaped indention is best suited into a Phillips screwdriver. A Robertson screw has a square-formed indention and demands a matching driver head. There are actually 5 different types of screws that the typical Do-it-yourself fanatic will work https://screws33196.bloguerosa.com/27890941/screws-for-dummies