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Trivia: Difference between a bolt and a screw?

Many could be either or.

The same fastener could be a bolt in some applications or a screw in others, depends on how it's used.
 
This is the answer in a nutshell...

Quote:
Originally Posted by bolly View Post
a bolt needs a nut, a screw doesnt.

Bolly gets the dancing banana with the first right answer.

A socket head cap screw doesn't need a nut then?
 
A socket head cap screw doesn't need a nut then?
Not always.

I have several pieces of rack-mount music gear that all have the face plates attached to their cases with socket head cap screws - and all thread into the cases like fine thread machine screws - no nuts on any of them.
 
According to my 1986 Webster's New World Dictionary, Second College Edition, the definition of a bolt mentions the use of a nut, but it is prefaced with the word "usually".

The definition of the word "screw" also includes the use of a nut, but not explicitly.

As is quite common, what the dictionary says, and what a word means in real life, can be two different things.

Aw, bolt it!
 
Screw- What you and the lady you met at the bar go home to do.

Bolt- What you do, when her husband comes home.
 
Per Machinery's Handbook...

"A bolt is an externally threaded fastener designed for insertion through holes in assembled parts, and is normally intended to be tightened or released by torquing a nut.

A screw is an externally threaded fastener capable of being inserted into holes in assembled parts, of mating with a preformed internal thread or forming its own thread and of being tightened or released by torquing the head."
 
Per Machinery's Handbook...

"A bolt is an externally threaded fastener designed for insertion through holes in assembled parts, and is normally intended to be tightened or released by torquing a nut.

A screw is an externally threaded fastener capable of being inserted into holes in assembled parts, of mating with a preformed internal thread or forming its own thread and of being tightened or released by torquing the head."


Let me break this down, hmmm

A screw is...

...an externally threaded fastener capable of being inserted into holes in assembled parts... so if you have to blow it up first, is that assembled?

...of mating with a preformed internal thread or forming its own thread
I usually like to bravely go where no man has been before

...and of being tightened or released by torquing the head.
Need I say more :thmbsp:
 
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