Certain things like bikes, cars, and furniture use hexagonal bolts for fastening. Hex bolts can only be used with the right diameter key and they don’t slip like Phillips and Flatheads. Also, the hexagonal tip keeps bolts from falling so you don’t need a magnet to hold your fasteners. Furthermore, it’s easy to identify which Allen key you need for each fastener, and you can use ballpoint hex keys if you need to work at an angle.
Since the hex bolt design is so practical, why don’t we use this type of fastener for everything? Why don’t we see hex wood screws and hex drywall screws ?
Edit : I’m asking about fasteners in general (like screws, bolts, etc)
In: Engineering
> Hex bolts can only be used with the right diameter key
This is literally one reason. Do you have any idea how annoying it would be if every time you needed to unscrew something you had to find the _exact_ right size key to use? Philips head screwdrivers are nearly universal. Barring gigantic size differences, you can use the same Philips screwdriver for a large variety of screw sizes
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