Originally Posted by Unca Fud
Just an antique engineer's fatigue opinion -
Rivets are not that necessary. They are very likely used on the OEM parts because they are cheaper and quicker to buy and install.
Use the 5 mm sockethead capscrews without any lockwashers or nylock nuts. Torque the bolts to yield & preferably use new ones every time. Preferably use good nuts with anti seize under the friction surface only.
This area runs warm so nylock nuts or locktite won't help. Don't use lockwashers in fatigue on general principle. Remember the U-joint experiences on airheads?
And - include a spare bolt & nut for the user to learn how to break.......
Bolts sound like a better choice for me.
What does torque to yield mean?