Mounting front fender using recessed caliper nut
As I've installed and tweaked the setup of my SKS Commuter fenders over the last few days, I've run into issues keeping the front fender exactly where I want it. For now, the "solution" has been some creative zip tie usage to keep the fender from rubbing the tire, however, thats not going to fly long term.
The problem is that the fender's mounting bracket is seemingly designed to be attached to the back side of the recessed nut for my caliper brakes - unfortunately, I have had no luck figuring out the proper sized screw for this nut. There is easily enough threading left on the back end to hold the fender.
The brakes are ProMax 451AG - short of my taking out the bolt and walking into Home Depot with it, does anybody know what size I should be shooting for here?