REFLECTOR: Threaded hole strength

[Chuck Harbert]

Okay, I'll bite. Now where are you using this plate and bolt in the 
airplane, because neither fine or coarse thread is going to be very strong 
going into only 1/4" aluminum?

Chuck H

> --------------
> Yes, the larger thread diameter gives more area in shear around the bolt,
> therefore the ½ " bolt connection will take more load.  Also, the larger
> thread (13 per inch, rather than 20 per inch) also makes each thread a bit
> stronger.
> Keith