The typical slotted head is finest utilised using a flat screwdriver, though the cross-formed indention is ideal suited to some Phillips screwdriver. A Robertson screw features a sq.-formed indention and requires a matching driver head. The duration of these screws differs, but most drywall screws have flat heads that are https://arthurcfggf.blogdomago.com/28025341/the-definitive-guide-to-wood-screws