NOT KNOWN FACTUAL STATEMENTS ABOUT TYPES OF SCREW HEADS

elevated head are often known as oval shaped head, and they've angle which is similar to that of flat screw but they've dome shaped head. Slotted- slotted drive screws are extremely generally employed and straightforward to find. The slotted recess has a straight line from the Center in the screw's head. Flathead screwdrivers or drills with flat