Hex bits: Designed to work when an Allen key won’t fit, hex bits are often used for furniture construction and disassembly. Square bits: Similar to hex bits, square bits are often used in commercially made products and furniture. They’re often replaced by hex products in modern production.

What size is hex bit?

Hex bits use a 1/4″ hexagonal fitting. (There are also larger sizes sometimes seen used with impact drivers, but these aren’t common.) Most screwdriving bits are 1″ long. 2″ & 6″ are available for more reach or just straighter reach when the screw is close to some obstruction.

Why do some technicians use Allen keys?

Why do some technicians use Allen keys instead of self-tapping screws to fasten joint? … To summarize, a hex key is a tool having a hexagonal socket that is used to drive nuts and screws. They are easier to use and less prone to strip than their Phillip’s head equivalent since they have six driving points.