The normal slotted head is greatest employed having a flat screwdriver, whilst the cross-shaped indention is most effective suited to the Phillips screwdriver. A Robertson screw provides a sq.-shaped indention and needs a matching driver head. You can not utilize a pozi driver on a Philips push screw, and You https://timco-screws52974.blogaritma.com/28006533/indicators-on-wood-screws-you-should-know