Some screws are turned by hand, others lost their head, and one looks like a sea monster. It might be time you read up on ...

If you've ever mistakenly grabbed the Phillips head screwdriver when you needed a flat head, you've probably asked yourself why there are different types of screws.

It's important to pick a good drive head when selecting a woodworking screw for two reasons: convenience and safety. Not all drive types can be driven down as easily — using a slotted flat head ...

Flat head screws could be made with a slitting saw, hack saw, or file. The flat-head screw, at the time, was the cheapest to make and had pretty good torque transfer capabilities.

Standardized screw heads and screwdrivers emerged later. Early screws used either a slotted head or some sort of square or octagonal drive. As screw production increased, slotted drives became ...

As anyone who has driven in a flathead screw can testify, slotted screws need to be centered in their hole and the screwdriver aligned with the head before pressure can be applied.

It includes a whopping 100 pieces, with Phillips head screwdriver, slotted screwdriver, Torx screwdriver, hex screwdriver and square-drive screwdriver bits, something for nearly every application.