The conventional slotted head is ideal utilised having a flat screwdriver, whilst the cross-formed indention is greatest suited to a Phillips screwdriver. A Robertson screw provides a square-formed indention and requires a matching driver head. The size of such screws may differ, but most drywall screws have flat heads that https://woodscrews08529.blogzag.com/72960452/examine-this-report-on-screws