Rumored Buzz on types of screw heads
A bulged head, at times by using a black phosphate coating. perfect for attaching drywall to the metallic stud or timber. sq.: showcasing an internal dice-form, a square screw generate resists stripping out The pinnacle, and demands a sq. bit or driver of the exact same size. Hex: made to allow for better torque, hex heads generally need a wrenc