i meant the thread cuts the material when u screw them in a wall or a piece of wood.

 

bolt n.

A fastener consisting of a threaded pin or rod with a head at one end, designed to be inserted through holes in assembled parts and secured by a mated nut that is tightened by applying torque.

screw n.

A cylindrical rod incised with one or more helical or advancing spiral threads, or a metal pin with incised threads and a broad slotted head that can be driven as a fastener by turning with a screwdriver

 

Machine screws do not eat through the material into which they go, nor do they have pointed ends.

It gets complicateder and complicateder.

 

This is ironic: asking about the difference between bolts and screws in a . . . thread!

 

English has many problems like this: machine screws are bolts.

For example, a Belgian Hare is a rabbit (not a hare), and a Jackrabbit is a hare (not a rabbit).

Now, I suppose, your next thread will ask "What's the difference between a rabbit and a hare?"

 

Nope, the next question is "How many magician's does it take to screw in a lightbulb?". J/K

 

[QUOTE]Originally posted by S2Kguy
[B]Nope, the next question is "How many magician's does it take to screw in a lightbulb?".

 

A screw is turned by a screwdriver or key (grip from the inside) a bolt is turned by a wrench (grip from outside). Not all screws have a pointy end (ie machine screws).

That's my story.

 

Well, there are some screws (self-tapping) with socket heads.

 

[QUOTE]Originally posted by magician
[B]

Now I'm confused.