what's the difference between screw & bolt?

Question

Answer

A screw usually has a pointed end.  You 'screw' a screw directly into something, for example, wood.

http://www.diytrade.com/china/4/products/2448678/Chipboard_screw_Drywall_screw_Wood_screw.html

You usually use a screwdriver to insert a screw.

A bolt usually has a 'flat' end.  They are usually used with a 'nut', and they are used to connect 2 things together (or to 'bolt' 2 things together).

See the image at the link, below:

http://www.simpsoncycles.co.uk/product.php/1694/loose_seat_nut_bolt

Nuts and bolts are usually fitted with a spanner or a wrench.

Answer

No problem, Laurens.  Feel free to ask any questions.

Answer

Thanks a lot !the description you gave me,exceed all of my expectations ! XD

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