Thanks for the feedback. It's a strength issue, according to the service bulletin, http://www.sonexaircraft.com/support/servicebulletins.html
Even though the Mil-Spec cites a minimum and both types of bolts meet this, I was told by Sonex the alloy steel bolts were stronger than the SS ones...
Hey :-)
Are standard cadmium plated ANx-x bolts as strong as stainless steel ANxC-x bolts? According to page 6 of Mil-B-6812E
www.everyspec.com/MIL-SPECS/MIL+SPECS+(MIL-B)/MIL-B-6812E_11135/
they both have a 125 kpsi minimum uts. Recently an aircraft manufacturer issued a service bulletin...