Re:Distinguishing Bolts from Screws (2012) [pdf]
by stephen_g on Tuesday August 23, 2016 @02:45AM
(#12341845)
I wouldn't say that there's 'confusion' - just that the terms are actually far looser than the linked document would suggest, because many fasteners can be bolts or screws depending on how they are used.
I would say that machine screws are usually used as screws. Machine screws are generally driven with a Phillips/Posidriv or flathead driver into threaded holes, so don't necessarily need a nut, but you can use them as bolts with a nut also. You use a spanner to drive lag bolts and they generally have hex heads like bolts so I would call them bolts, but technically they are actually screws.
Re:Distinguishing Bolts from Screws (2012) [pdf]
by JoeAltmaier on Tuesday August 23, 2016 @05:52AM
(#12342502)
And a Square Knot is actually a bend. A knot is tied in the end of a rope; a bend fastens two ropes together.
- A "machine screw" is a bolt (i.e., it needs a nut):
https://encrypted.google.com/search?q=machine+screw&tbm=isch
- A "lag bolt" is a screw (i.e., it doesn't take a nut):
https://encrypted.google.com/search?q=lag+bolt&tbm=isch