What Is a Pan Head Screw? Uses and Selection
Quick answer: A pan head screw has a flat bearing surface, rounded sides and a slightly domed top. It is a versatile non-countersunk head used in metal, wood, plastics and equipment assemblies.
What matters most
- The underside sits on the material surface rather than inside a countersink.
- The moderate head diameter distributes load without taking as much space as a truss head.
- Pan heads are available with Phillips, slotted, Torx and other drives.
How to choose or use it
Use pan heads where a visible, raised head is acceptable and the joint needs a dependable bearing surface. Match the thread style to the base material: machine threads for tapped holes or nuts, and appropriate tapping threads for sheet material.
Before buying, verify the screw diameter, length, thread, head style, drive, material and finish against the mating parts. A correct-looking screw can still be incompatible if its thread standard or corrosion performance is wrong.
Installation checklist
- Inspect the parts and confirm the required hole or mating thread.
- Use a correctly fitting driver and keep it aligned with the screw axis.
- Tighten only until the joint seats or to the specified torque; overtightening can strip threads or damage the workpiece.
- For structural, overhead or safety-critical joints, follow the approved drawing, code or fastener manufacturer’s data.