: Why don’t we use hex bolts on everything ?

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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

42 Answers

Anonymous 0 Comments

Hex bolts can most definitely strip and wear out.

It really depends on the sizing tolerances of the tool and the material the bolt is made of.

Also bolts are not very good in tight/recessed spaces because the socket driver has to be bigger than the bolt, which can affect design/engineering decisions.

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