bolts and threads

[Jerry Roberts]

Here is some good information on bolts and threads from Hot Rod magazine . 

[Loren]

Carrol Smith (Prepare to Win) has lots of hard earned data on the way you keep things together.

I’ve used his thoughts on axles, splines and threads and happily never had a failure.

Studs are rarely necked down as in the above, because they usually have cut threads. The necked down ones are usually rolled threads and rolled threads are 20% stronger. Think about that when you’re removing a stud using the double nut method.

As a mechanic I hate studs, as an engineer I prefer them if done properly. Changed regularly, installed properly and properly designed studs are way better otherwise they are a pain.

Studs have a memory. Anything evil done to them will be remembered.