The oldest and Among the most popular screw heads is slotted. This screw is employed that has a flathead screwdriver. Even though it is commonly made use of, the screw head is often quickly ruined and also the blade from the screwdriver can certainly slip out from the slotted head. https://sergiocowek.tusblogos.com/29380986/rumored-buzz-on-types-of-screw-heads-list