The normal slotted head is most effective utilized that has a flat screwdriver, while the cross-shaped indention is finest suited to a Phillips screwdriver. A Robertson screw includes a sq.-formed indention and requires a matching driver head. This bolt, combined with the machine screw that goes with it, sits on https://timco-screws86318.blogkoo.com/wood-screws-things-to-know-before-you-buy-48312432