The normal slotted head is ideal utilised that has a flat screwdriver, when the cross-formed indention is finest suited to your Phillips screwdriver. A Robertson screw provides a sq.-formed indention and needs a matching driver head. You cannot make use of a pozi driver over a Philips push screw, and https://timco-screws83658.blog-gold.com/34928761/5-simple-statements-about-screws-explained