screws have 300 times more holding power. threads cut into and deform wood to hold tightly. nails grip with friction hold will loosen when wood shrinks and may pop nail head above surface and create callback in a drywall situation.christoph said:Why do you use one over the other?
Mike,Mike Finley said:...I would be curious to know if there is really much of a difference between ring shanks and screws when it comes to holding power?
LOL.Joe Carola said:What are we talking about using screws for?
I looked around that site but couldn't find anything on holding power.mikesewell said:Mike,
If you like math and engineering, the answers to many of your questions on this subject can be answered by the National Design Specification put out by the American Wood Council. If you don't enjoy math, then you can always use the empirical approach. Try to pull some screws out with your hammer, and you will quickly have your answer. Generally, nails and rivets are not supposed to be loaded for withdrawal, that's what screws and bolts are for.
Also, don't preload your screws, that's a mistake that most people make.
Teetorbilt said:...I suppose that you could say that a screw was preloaded due to the fact that it is under some tension under application...