I'm trying to discover what is the bolt size from this Bolt located in the brake rotor (see image)
Does anyone know the are the exactly size? Thank you
From previous posts, it has been called a temporary installation connector. IOWs you can take it off without effect.
And, as @bruryan pointed out, it’s not required. It simply holds the rotor on when the wheel is removed. When the wheel is installed, it holds the rotor on.
Oh, and the rotor can’t be removed unless you remove the wheel, the bolt AND the caliper.
Bottom line: Just take the bolt off of it’s in the way.