A 6-point socket is easy to envision, especially if you studied geometry at some point in your life, since it's a hexagonal shape designed to fit a hex-head bolt or hex nut.

It can be faster and simpler than using bolts in low-strength applications. A great thing about sheetmetal screws is that their socket head allows you to drive them any number of ways: with a socket ...

They then asked 10 men and women to repeatedly drive a small screw—the kind used in smartphone assembly—into a three-millimeter socket. The screws had either a Phillips head or a hex head.