The standard slotted head is finest employed with a flat screwdriver, when 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 length of these screws varies, but most drywall screws have flat heads that are https://andersoncjnru.blogdomago.com/28127687/wood-screws-things-to-know-before-you-buy