[TowerTalk] To pin or not to pin

[Al Kozakiewicz]

If you are drilling a hole why do you need
M8 hardware instead of 5/16 or even go larger which is readily available in stainless steel.  I do not believe that stainless steel bolts come in the same grades standards as steel although some stainless materials may be equivalent. 

John KK9A
   

No ME here either, but I think the idea is that the bolt acts as a shear pin. You want it to fail before the rotor or mast.

Al
AB2ZY