Pan head screws are threaded fasteners with a similar non-countersunk, mushroom-shaped head. They are commonly used to fasten wooden workpieces. Pan head is one of the most common types of screws. They are known as “pan head screws” because their head resembles a pan. The following article presents the most important types of fastener heads: Slotted-head screw. Cross-slotted screw head (Phillips recess, Phillips or PH fastener) Pozidriv screw head (PZ)