The typical slotted head is most effective used using a flat screwdriver, while the cross-shaped indention is finest suited to the Phillips screwdriver. A Robertson screw features a square-shaped indention and requires a matching driver head. This bolt, together with the machine screw that goes with it, sits on just https://wood-screws64296.xzblogs.com/69946789/the-definitive-guide-to-wood-screws