There are two main types of drywall screw: coarse thread and fine thread types. The type of thread you use depends on the ...

These screws have sharp tips and include a fine thread along the shank. The Teks #12 x 2-3/4-in. Phillips-drive sheet metal screws are a good choice for securing wood to metal. They feature a ...

Part of that is probably because we’ve gotten so good at making them that they’re seen as cheap commodities, but the physics and engineering behind the screw thread is interesting stuff.