Hair splitting for AnthonyG?

Living a full 15 miles from the Canadian border I can say that Canadians call a couch a Chesterfield, Old Americans call it a davenport and us regular folks call it a couch. My dog calls it a bed.....
 
I was told by a mechanical engineer friend of mine that an engine takes a fuel and produces mechanical power from it while a motor takes one form of power (electrical) and changes it into another form of power (mechanical).
 
But because we are old and bored, we keep looking.....Not a big fan of Wheel of Fortune, but when Jeopardy comes on, it's at least a real quiz. Orcas Island Friday night. Sheesh.
 
A cap screw has has the same size threads all the way, It becomes a bolt when used with a nut.

8BA heads are held on with cap screws.
If it screws into a threaded hole in a casting it is a cap screw.

If the same fastener is used with a nut it becomes a bolt and nut.
To most mechanics they are all bolts,
Bill

Channel lock is a brand name for tongue and groove pliers like Crescent is a brand name for an adjustable wrench.
Bill
Channel lock "type" pliers
 
also like "philips" type screwdrivers are the same ,except size. actually real "phllips" tips
are blunt at the very tip. If pointed they are Reed & Prince.
 
If there is a misunderstanding of what the differences is to a lag bolt and a lag screw.

A bolt usually can be defined by requiring a nut at the end of it. Fixed or integrated. A screw never does.

It's just a confusion of market branding or a public streamlining terms. Now please pass the q-tip, no not the cotton swab.
 
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